California’s Forest Resources, 2001–2005
Appendix 1: Inventory Design and Methods
The Pacific Northwest Research Station’s (PNW) Forest
Inventory and Analysis (FIA) Program implemented the
new annual inventory in California in 2001. The overall
sampling design is a significant change from that of previous periodic inventories; the differences are discussed more
fully below.
In the annual inventory system for the Pacific Northwest (coastal Alaska, Washington, Oregon, and California),
the objective is to measure approximately 10 percent of
the plots across an entire state each year. This annual
subsample is referred to as a panel. The plots measured in
a single panel are selected to ensure systematic coverage
within each county, spanning both public and privately
owned forests, and including lands reserved from industrial
wood production such as national parks, wilderness areas,
and natural areas.
Estimates of forest attributes can be derived from
measurements of a single panel for areas as small as a
survey unit or ecosection; however, such estimates are often
imprecise because one panel represents only 10 percent
of the full inventory sample. More-precise statistics are
obtained by combining data from multiple panels. After at
least 60 percent of plots have been sampled, change can be
estimated through a comparison of average values across
different sets of panels. Estimates from sampled plots in the
five panels measured from 2001 to 2005 were combined to
produce the statistics in this report. When all panels have
been measured once (2010), each panel will be remeasured
at 10-year intervals.
The FIA Program collects information in three phases.
In phase 1, a sample of points is interpreted from remotely
sensed imagery (either aerial photos or satellite data) and
the landscape is stratified into meaningful groupings, such
as forested and nonforested areas, ecologically similar
regions, and forest types. In phase 2, field plots are measured for a variety of indicators that describe forest composition, structure, and the physical geography of the landscape.
Phase 2 plots are spaced at approximate 3-mile intervals on
a hexagonal grid throughout the forest. In phase 3, one of
every 16 phase 2 field plots is visited and a variety of forest
health measurements are taken.
Phase 1
The goal of phase 1 is to reduce the variance associated
with estimates of forest land area and volume. Digital imagery collected by remote-sensing satellites is classed into a
few similar strata (such as forest or nonforest) by means of
standard techniques for image classification, and the total
area of each of these strata is used to assign a representative
acreage to each sample plot. Source data were derived from
Landsat Thematic Mapper (98.4 feet resolution) imagery
collected between 1990 and 1992. An image-filtering
technique is used to classify individual plots through a summary of the 5- by 5-pixel region that surrounds the pixel
containing a sample plot. The resulting 26 classes, or strata
(ranging from entirely forested to entirely nonforested, for
example), are combined with other geographic attributes
likely to improve stratification effectiveness, such as owner
class. The resulting strata are evaluated for each estimation
unit (county, or combination of small counties), and collapsed as necessary to ensure that at least four plots are in
each stratum. Stratified estimation is applied by assigning
each plot to one of these collapsed strata and by calculating
the area of each collapsed stratum in each estimation unit.
The estimates of area and volume from stratified data are
usually more precise than those from unstratified estimates.
Phase 2
The plot installed at each forested phase 2 location is a
cluster of four subplots spaced 120 feet apart (fig. 89). Subplot 1 is in the center, with subplots 2 through 4 uniformly
distributed radially around it. Each point serves as the
center of a 1/24-acre circular subplot used to sample all
trees at least 5.0 inches in diameter at breast height (d.b.h.).
A 1/300-acre microplot, with its center located just east of
each subplot center, is used to sample trees 1.0 to 4.9 inches
d.b.h., as well as seedlings (trees less than 1.0 inch d.b.h.).
On national forests in California, a hectare plot (a 185.1-foot
fixed-radius plot centered on subplot 1) is also established
to tally trees larger than 32 inches d.b.h. in the eastern part
of the Northwest Forest Plan area and larger than 48 inches
d.b.h. in the western part of the Northwest Forest Plan area.
All phase 2 plots identified by aerial photography as
possibly being forested are established in the field without
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GENERAL TECHNICAL REPORT PNW-GTR-763
Figure 89—The Forest Inventory and Analysis plot design used in California, 2001–2005.
regard to land use or land cover. Field crews delineate areas
that are comparatively less heterogeneous than the plot as
a whole with regard to reserved status, owner group, forest
type, stand size class, regeneration status, and tree density;
these areas are described as condition classes. The process
of delineating these condition classes on a fixed-radius plot
is called mapping. All measured trees are assigned to the
mapped condition class in which they are located.
On phase 2 plots, crews assess physical characteristics
such as slope, aspect, and elevation; stand characteristics
such as age, size class, forest type, disturbance, site productivity, and regeneration status; and tree characteristics
such as tree species, diameter, height, damages, decay,
and vertical crown dimensions. They also collect general
descriptive information such as soil depth, proximity to
water and roads, and the geographic position of the plot
116
in the larger landscape. In California, crews also assess
height and cover of understory species, the structure of live
and dead fuels, and the structure and composition of down
wood as regional variables (see “Core, Core-Optional, and
Regional Variables” section below).
The FIA Program sampled 3,542 forested phase 2
plots in California between 2001 and 2005. Estimates of
timber volume and other forest attributes were derived
from tree measurements and classifications made at each
plot. Volumes for individual tally trees were computed
with equations for each of the major species in California.
Estimates of growth, removals, and mortality were
determined from measurements taken at approximately
1,900 permanent sample plots established in the previous
inventory and in conjunction with increment cores taken
during the annual inventory.
California’s Forest Resources, 2001–2005
Phase 3
More-extensive forest health measurements are collected
in a 16-week period during the growing season (when most
plants are in full leaf and many are flowering) on a subset
(1/16) of phase 2 sample locations. At the phase 3 plots,
measurements are taken on tree crowns, soils, lichens,
downed woody material, and understory vegetation, in
addition to the phase 2 variables. One forest health measurement, ozone injury, is conducted on a separate grid with
all 65 ozone plots measured annually. The FIA Program
sampled 351 forested phase 3 plots in California between
2001 and 2005. The relatively small number of phase 3
samples is intended to serve as a broad-scale detection
monitoring system for forest health problems.
Core, Core-Optional, and Regional Variables
The majority of FIA variables collected in California
are identical to those collected by FIA elsewhere in the
United States—these are national “core” or “core optional”
variables (as the name suggests, collection of core optional
variables is optional but, if collected, they must be collected
in the same way everywhere). A number of other variables
are unique to PNW-FIA. These are “regional” variables and
include such items as down woody material and understory
vegetation on phase 2 plots (not to be confused with down
woody and understory vegetation on phase 3 plots, which
are measured using a slightly different protocol), as well as
insect and disease damage, a record of previous disturbance
on the plot, and measurements for special studies (such
as nesting habitat assessment for the marbled murrelet
(Brachyramphus marmoratus)).
Data Processing
The data used for this report are stored in the FIA National
Information Management System (NIMS). It provides a
means to input, edit, process, manage, and distribute FIA
data. NIMS includes a process for data loading, a national
set of edit checks to ensure data consistency, an error
correction process, approved equations and algorithms,
code to compile and compute calculated attributes, a table
report generator, and routines to populate the presentation
database. NIMS applies numerous algorithms and equa-
tions to calculate, for example, stocking, forest type, stand
size, volume, and biomass. NIMS generates estimates and
associated statistics based on county areas and stratum
weights developed outside of NIMS. Additional FIA statistical design and estimation techniques are further reviewed
in Bechtold and Patterson (2005).
Statistical Estimates
Throughout this report we have published standard errors
(SE) for most of our estimates. These standard errors
account for the fact that we measured only a small sample
of the forest (thereby producing a sample-based estimate)
and not the entire forest (which is the population parameter
of interest). Because of small sample sizes or high variability within the population, some estimates can be very
imprecise. The reader is encouraged to take the standard
error into account when drawing any inference. One way to
consider this type of uncertainty is to construct confidence
intervals. Customarily, 66-percent or 95-percent confidence
intervals are used. A 95-percent confidence interval means
that one can be 95 percent confident that the interval
contains the true population parameter of interest. For more
details about confidence intervals, please consult Moore and
McCabe (1989) or other statistical literature.
It is relatively easy to construct approximate 66percent or 95-percent confidence intervals by multiplying
the SE by 1.0 (for 66-percent confidence intervals) or 1.96
(for 95-percent confidence intervals) and subtracting and
adding this to the estimate itself. For example, in table 2 of
appendix 2, we estimated the total timberland in California
to be 19,551 thousand acres, with a SE of 266. A 95-percent
confidence interval for the total timberland area ranges
from 19,030 to 20,072 thousand acres.
The reader may want to assess whether or not two
estimates are significantly different from each other. The
statistically correct way to address this is to estimate the
SE of the difference of two estimates and either construct
a confidence interval or use the equivalent z-test. However,
this requires the original inventory data. It is often reasonable to assume that two estimates are nearly uncorrelated.
For example, plots usually belong to one and only one
owner. The correlation between estimates for different
117
GENERAL TECHNICAL REPORT PNW-GTR-763
owners will be very small. If both estimates are assumed to
be nearly uncorrelated, the standard error of the difference
can be estimated by
2
2
SEDifference = SEEstimate
1 + SEEstimate 2
Using the SE of the difference, a confidence of the
difference can be constructed with this method.
If two estimates are based on data that occur on the
same plot at the same time, the above equation should
not be used. For example, table 17 in appendix 2 contains
estimates of tree volume by diameter class. If one wants
to compare the volume of trees in the diameter class 9.0 to
10.9 d.b.h. (9,676 million board feet) with that of trees in the
diameter class 21.0 to 22.9 d.b.h. (21,484 million board feet),
the covariance between the estimates is not zero, and this
equation should not be used.
There are two other approaches the reader could
consider, but we do not recommend them. The first is to
construct a confidence interval for one estimate and evaluate whether the other estimates falls within the interval. The
problem is that unless both estimates are highly positively
correlated, this approach will lead to a too-small confidence
interval. The second approach is to construct confidence
intervals for both estimates and determine whether or not
they overlap. The problem here is that unless both estimates
are highly negatively correlated, this approach will be very
conservative. For more complex and indepth analysis, the
reader may contact the PNW-FIA Program.
All estimates—means, totals and their associated
SE—are based on the poststratification methods described
in detail by Bechtold and Patterson (2005).
Access Denied, Hazardous, or
Inaccessible Plots
Although every effort was made to visit all field plots that
were entirely or partially forested, some were not sampled
for a variety of reasons. Field crews may have been unable
to obtain permission from the landowner to access the plot
(“denied access”), and some plots were impossible for crews
to safely reach or access (“hazardous/inaccessible”). Some
118
private landowners deny access to their land. Although
permission to visit public lands is almost always granted,
some public land lies in higher elevation areas with extreme
topography that can be very difficult or impossible to reach.
This kind of missing data can introduce bias into the
estimates if the nonsampled plots tend to be different from
the entire population. Plots that are obviously nonforested
(based on aerial photos) are rarely visited and therefore the
proportion of denied-access, hazardous, or inaccessible
plots is significantly smaller for them than it is for forested
plots.
The poststratification approach outlined in Bechtold
and Patterson (2005) removes nonsampled plots from the
sample. Estimates are adjusted for plots that are partially
nonsampled by increasing the estimates by the nonsampled
proportion within each stratum. To reduce the possible bias
introduced by nonsampled plots, we delineated five broad
strata groups: census water, forested public land, nonforested public land, forested private land, and nonforested
private land. Some of these five broad strata groups were
further divided into smaller strata to reduce the variance.
The tabulation below shows the percentage of denied-access
and hazardous/inaccessible plots for each of the five broad
strata groups in California, 2001–2005:
Strata group
Total
plots
Denied
access
Census water
Private forest
Private nonforest
Public forest
Public nonforest
460
1,869
2,204
4,881
324
Percent
0
0
12.54
0.54
3.33
0.13
0.51
2.18
0.77
1.86
Total
9,738
3.44
Hazardous/
inaccessible
1.29
Timber Products Output Survey
The timber products information presented in this report
was based on a census of California’s timber processors
and out-of-state processors that use California timber.
The census was conducted by the University of Montana’s
Bureau of Business and Economic Research in cooperation
with PNW-FIA (Morgan et al. 2004). Through a written
questionnaire or a phone interview, forest products
California’s Forest Resources, 2001–2005
manufacturers provided the following information for
each of their facilities: plant production capacity and
employment; volume of raw material received, by county
and ownership; species of timber received; finished product
volumes, types, sales value, and market locations; and
utilization and marketing of manufacturing residue. This
survey is designed to determine the size and composition
of California’s timber harvest and forest products industry,
the industry’s use of forest resources, and the generation
and disposition of wood residues.
National Woodland Owner Survey
This survey of private forest owners is conducted annually by the FIA Program to increase our understanding of
private woodland owners. Questionnaires are mailed to
individuals and private groups owning woodlands in which
FIA has established forest inventory plots. Nationally, 20
percent of these owners (about 50,000) are contacted each
year, with more-detailed questionnaires sent to coincide
with national census, inventory, and assessment programs.
For California, 269 private noncorporate woodland owners
were sent questionnaires, and the 124 that were returned
provide the data that were summarized and presented in
this report.
Periodic Versus Annual Inventories
The PNW-FIA Program began fieldwork for the fifth
inventory of California in 2001. This was the first inventory
that used the annual inventory system, in which 1/10 of all
forested plots (referred to as one panel) were visited each
year. The first statewide panel of field plots was completed
in 2001. By 2006, half of all field plots in the state had been
measured, prompting production of this congressionally
mandated 5-year analysis of California’s forest resources.
Data from new inventories are often compared with
those from earlier inventories to determine trends in forest
resources. However, for the comparisons to be valid, the
procedures used in the two inventories should ideally
be identical. Previous inventories of California’s forest
resources were completed in 1974, 1983, and 1994. These
were periodic inventories in which all timberland plots
in the state (outside of national forests and reserved areas
such as national parks) were visited within a 2- or 3-year
window. The last periodic inventory on national forests was
completed in 1999.
As a result of our ongoing efforts to improve the
efficiency and reliability of the inventory and to conform
to the national annual inventory design adopted by all
FIA units, several changes in procedures and definitions
have been made since the last California inventory in
1994. These changes included an increase in plot density
of about 18 percent, a new plot footprint (changing from a
five-subplot configuration, in which about 2.5 acres were
sampled, to a four-subplot configuration in which less
than 1 acre is sampled) (fig. 90), a new set of nationally
consistent measurement protocols, a plot visitation
schedule that calls for sampling of 10 percent of all forested
plots in the state each year, and changes in timberland
classification protocols. Although these changes will have
little impact on statewide estimates of forest area, timber
volume, and tree biomass, they have significantly affected
estimates of timberland area (see below) and may affect plot
classification variables such as forest type and stand size
class, especially for estimates at the county level.
Explanation of disparities in timberland
area from periodic and annual inventories
Estimates of timberland area from the annual inventory are
noticeably larger than timberland estimates from periodic
inventories in California. One reason for this is a significant
change in the procedures used to classify forest land as
either productive timberland or unproductive forest land.
In the periodic inventory of the mid 1990s, forest land was
often classified using aerial photos or stratified map layers,
before plots were assessed in the field. Classifications
were based on a number of factors such as species present,
density/cover of trees, and geographic location. Timberland
is defined as forests capable of producing at least 20 cubic
feet/acre/year of continuous crops of commercial trees,
where “commercieal” is defined in terms of size and quality
of roundwood suitable for lumber or other manufactured
products. All other forests (those not classified as timberland via aerial photos or field assessment) were assigned
one the “unproductive” forest land labels (oak wooodland
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GENERAL TECHNICAL REPORT PNW-GTR-763
Figure 90—Relationship of periodic (upper, black figure) and annual (lower, red figure) inventory plot designs. Note that only one
subplot center overlaps for both designs.
120
California’s Forest Resources, 2001–2005
or pinyon-juniper, for example). Site trees were used to
determine site index and the associated productivity index
(mean annual increment, MAI) on all timberland plots.
In some cases, the calculated MAI fell below the 20 cubic
feet/acre/year threshold resulting in several plots being
reclassified as unproductive forest.
With the intent of developing a more objective approach
to classifying forest land, with the advent of annual
inventory (which began implementation in California in
2001), FIA began collecting site trees on all forest land,
including unproductive land. Instead of subjectively
assigning forest land classes via visual inspection (of
photos or plots on the ground) or based on the presence
or absence of commercial species, site index equations
areno used to estimate site index and calculate MAI to
obtain an objective estimate of productivity. As before,
MAI is the basis for assigning a site class to every forest
condition on the plot, which, in turn, is used to determine
whether forest land is timberland or unproductive forest.
Because there are a limited number of site index equations
available for each species, and there can be difficulty in
located a representative site tree on some poor sites, the
calculated MAI is sometimes unrepresentative of actual
productivity. In some cases, conditions previously classified
as unproductive forest are now classified as timberland
under the new approach, even though it is unlikely that
there was any real change in productivity. This has caused
a substantial increase in the area of timberland reported in
this 5-year summary of the California inventory from 2001
to 2005.
To learn the extent of the various factors that contribute
to this issue, a timberland accounting was developed using
plots that had been assessed in both the periodic and annual
inventories. Using these “paired plots,” the estimate of
timberland area from annual inventory date is 2.7 million
acres larger than the estimate from the periodic data. About
46 percent of this area was previously classified as oak
woodland, 11 percent was pinyon-juniper, 26 percent was
other types of forest land, and the rest was nonforets as
represented in the periodic inventory data. Although some
of these changes may be real and represent actual change,
the majority are likely owing to changes in the approach to
classifying forest land.
Estimates of growth, removals, and mortality (GRM)
are particularly dependant on comparisons between
inventories, and thus are most likely to be valid when
based on remeasurements of the same plots and trees.
Only half of the field plots (5 out of 10 panels) have been
visited under the annual system to date, and the increase
in plot density means about 18 percent of plots are new
(they were not visited during a previous inventory). Unlike
the five-subplot, variable-radius design used in the 1995
periodic inventory, the annual inventory uses fixed-radius
sampling on four subplots, with only one subplot center
coinciding with that of a periodic subplot. Thus, relatively
few of the trees sampled at the periodic inventory were
remeasured in the annual inventory. Estimates of GRM will
eventually improve as the annual inventory becomes fully
implemented, and several panels of plots are remeasured.
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GENERAL TECHNICAL REPORT PNW-GTR-763
Appendix 2: Summary Data Tables
The following tables contain basic information about
the forest resources of California as they relate to the
discussions of current forest issues and basic resource
information presented in this report. These tables aggregate
data to a variety of levels, including county (fig. 5),
ecosection (fig. 6), owner group (fig. 7), survey unit (fig.
8), and forest type, allowing Pacific Northwest Research
Station Forest Inventory and Analysis (FIA) inventory
results to be applied at various scales and used for various
analyses. Many other tables could be generated from
the California annual data, but space limits us to a few
(60+) key ones. Data are also available for download in
nonsummarized form at http://www.fia.fs.fed.us.
The national FIA Web site (http://www.fia.fs.fed.us/
tools-data/data/) contains a tool for querying the California
annual data and generating custom tables or maps. Some of
the tables in this appendix contain summaries of regional
variables; data for regional variables currently are not
included in the national FIA database (FIADB). Additional
information on regional variables can be requested from our
office by e-mailing Karen Waddell (kwaddell@fs.fed.us).
Please note that information in tables presented and in
those generated from the FIADB may differ. As new data
are added each year to FIADB, any tables generated from it
will be based on the current full set of data in FIADB (e.g.,
2001–2006, 2001–2007, etc.), whereas tables in this publication contain data from only 2001–2005. The user can take
a snapshot of data from FIADB by selecting the desired
years and generating tables that are similar, but probably
not identical, to those presented here.
List of Tables
Table 1—Number of Forest Inventory and Analysis (FIA)
plots measured from 2001 to 2005, by land class, sample
status, ownership group, California.
Table 2—Estimated area of forest land, by owner class
and forest land status, California, 2001–2005
Table 3—Estimated area of forest land, by forest type
group and productivity class, California, 2001–2005
Table 4—Estimated area of forest land, by forest type
group, ownership, and land status, California, 2001–2005
Table 5—Estimated area of forest land, by forest type
group and stand size class, California, 2001–2005
Table 6—Estimated area of forest land, by forest type
group and stand age class, California, 2001–2005
Table 7—Estimated area of timberland, by forest type
group and stand size class, California, 2001–2005
Table 8—Estimated number of live trees on forest land, by
species group and diameter class, California, 2001–2005
Table 9—Estimated number of growing-stock trees
on timberland, by species group and diameter class,
California, 2001–2005
122
Table 10—Estimated net volume of all live trees, by owner
class and forest land status, California, 2001–2005
Table 11—Estimated net volume of all live trees on forest
land, by forest type group and stand size class, California,
2001–2005
Table 12—Estimated net volume of all live trees on forest
land, by species group and ownership group, California,
2001–2005
Table 13—Estimated net volume of all live trees on forest
land, by species group and diameter class, California,
2001–2005
Table 14—Estimated net volume of growing-stock trees on
timberland, by species group and diameter class, California,
2001–2005
Table 15—Estimated net volume of growing-stock trees on
timberland, by species group and ownership group, California, 2001–2005
Table 16—Estimated net volume (International ¼-inch rule)
of sawtimber trees on timberland, by species group and
diameter class, California, 2001–2005
California’s Forest Resources, 2001–2005
Table 17—Estimated net volume (Scribner rule) of sawtimber trees on timberland, by species group and diameter
class, California, 2001–2005
Table 30—Mean cover of understory vegetation on
forest land, by forest type class, age class, and life form,
California, 2001–2005
Table 18—Estimated net volume (cubic feet) of sawtimber
trees on timberland, by species group and ownership group,
California, 2001–2005
Table 31—Estimated mean crown density and other
statistics for live trees on forest land, by species group,
California, 2001–2005
Table 19—Estimated above-ground biomass of all live
trees on forest land, by owner class and forest land status,
California, 2001–2005
Table 32—Estimated mean foliage transparency and
other statistics for live trees on forest land, by species
group, California, 2001–2005
Table 20—Estimated above-ground biomass of all live
trees on forest land, by diameter class and species group,
California, 2001–2005
Table 33—Estimated mean crown dieback and other
statistics for all live trees on forest land, by species
group, California, 2001–2005
Table 21— Estimated biomass of live trees on forest land by
softwood species group, for merchantable tree boles, tops,
limbs, stumps, and small trees, California, 2001–2005
Table 34—Properties of the forest floor layer on forest
land, by forest type, California, 2001, 2003–2005
Table 22—Estimated mass of carbon of all live trees, by
owner class and forest land status, California, 2001–2005
Table 35—Properties of the mineral soil layer on forest
land, by depth of layer and forest type, California, 2001,
2003–2005
Table 23—Estimated biomass and carbon mass of live trees,
snags, and down wood on forest land, by forest type group,
California, 2001–2005
Table 36—Chemical properties of mineral soil layers on
forest land, by depth and forest type, California, 2001,
2003–2005
Table 24—Estimated average biomass and carbon mass of
live trees, snags, and down wood on forest land, by forest
type group, California, 2001–2005
Table 37—Chemical properties (trace elements) of forest
floor and mineral soils on forest land, by forest type,
California, 2001, 2003–2005
Table 25—Estimated average biomass, volume, and density
of down wood on forest land, by forest type group and
diameter class, California, 2001–2005
Table 38—Compaction, bare soil, and slope properties of
forest land, by forest type, California, 2001, 2003–2005
Table 26—Estimated biomass and carbon mass of down
wood on forest land, by forest type group and owner group,
California, 2001–2005
Table 27—Estimated average biomass, volume, and density
of snags on forest land, by forest type group and diameter
class, California, 2001–2005
Table 28—Estimated biomass and carbon mass of snags
on forest land, by forest type group and owner group,
California, 2001–2005
Table 29—Mean cover of understory vegetation on
forest land, by forest type group and lifeform, California,
2001–2005
Table 39—Estimated number of live trees with damage on
forest land, by species and type of damage, California,
2001–2005
Table 40—Estimated area of forest land with more than
25 percent of basal area damaged, by forest type and type
of damage, California, 2001–2005
Table 41—Estimated gross volume of live trees with
damage on forest land, by species and type of damage,
California, 2001–2005
Table 42— Estimated number of live trees with damage,
acres of forest land with greater than 25 percent of basal
area damaged, and gross volume of live trees with damage,
by survey unit and ownership group, California, 2001–2005
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GENERAL TECHNICAL REPORT PNW-GTR-763
Table 43—Estimated area of forest land covered by selected
nonnative vascular plant species, by life form and species,
California, 2001–2005
Table 49—Ozone injury summary information
from ozone biomonitoring plots, by year, California,
2000–2005
Table 44—Summary of lichen community indicator
species richness on forest land, by location, California,
1998–2001, 2003
Table 50 - Total acres of forest land with a forest fire
incident, by year and ecosection group, California,
1995–2004
Table 45—Summary of air quality on forest land in
the greater Central Valley as indicated by the Lichen
Community Indicator, California, 1998–2001, 2003
Table 51—Estimated gross growth, net change,
removals, and mortality of growing stock for softwood
species on timberland, by species group and owner,
California, 2001–2005
Table 46—Summary of air quality on forest land in
the greater Sierra Nevada as indicated by the Lichen
Community Indicator, California, 1998–2001, 2003
Table 52—Total roundwood output by product, species
group, and source of material, California, 2000
Table 47—Summary of climate on forest land as indicated
by the Lichen Community Indicator, derived from the
temperature gradient of Jovan and McCune’s (2004)
model, California, 1998–2001, 2003
Table 53—Volume of timber removals by type of
removal, source of material, species group, California,
2000
Table 54—Estimated area of forest land covered by
vascular plant nontimber forest products, by plant group
and species, California, 2001–2005
Table 48—Summary of climate on forest land as indicated
by the Lichen Community Indicator, derived from the
moisture gradient of Jovan and McCune’s (2004) model,
California, 1998–2001, 2003
Table 55—Percentage of forested plots with selected
lichen nontimber forest products present, by species,
California, 2001–2005
Table 1—Number of Forest Inventory and Analysis (FIA) plots measured from 2001 to
2005, by land class, sample status, and ownership group, California
Land class and sample status
Forest land plots:
Softwood types
Hardwood types
Nonstocked Other public Private Total
Thousands
1,582
537
76
224
165
8
437
652
19
2,212
1,347
103
2,122
388
1,077
3,542
Nonforest land plots:
815
2,258
3,098
6,151
Unsampled plots:
Denied access Hazardous 1
166
1
43
330
25
363
206
167
44
355
566
2,653
2,562
3,821
8,929
Total Total Total, all land plots
124
National forest California’s Forest Resources, 2001–2005
Table 2—Estimated area of forest land, by owner class and forest land status, California, 2001–2005
Unreserved forests
Timberlanda
Owner class
USDA Forest Service:
National forest
Total
Other federal government:
National Park Service
Bureau of Land Management
U.S. Fish and Wildlife Service
Departments of Defense
and Energy
Other federal
Total
State and local government:
State
Local
Other public
Total
Corporate private:
Total SE
Reserved forests
Other
forestb
Total
Productive a
Total SE
Total SE
Total SE
Other
forest b
Total
Total SE
All forest
land
Total SE
Total SE
Thousand acres
9,784 167
2,424 126 12,208 174
2,626 128
923
80
3,558 144
15,766 145
9,784 167
2,424 126 12,208 174
2,626 128
923
80
3,558 144
15,766 145
85
23
12
—
396
214
6
—
64
51
6
—
1,282 97
256 56
18 14
— —
1,282 97
1,650 130
18 14
86 31
14
52 25
47
24
99 34
1,499 165
993 145
663 145
1,655 201
—
471
—
31
—
74
—
20
12
12
— —
923 102
— —
55 24
8
7
— —
1,393 120
— —
86 31
20
886
43
12
—
119
37
514 106
986 133
160
97
1
43
33
1
67
144
—
28
39
—
227
242
1
52
51
1
341 63
40 23
— —
152
51
12
41
23
12
492 74
91 32
12 12
258
77
211
67
470 104
381 86
215
76
595 118
1,065 160
4,402 182
338
61
4,740 189
— —
—
—
— —
4,740 189
88
33
319
62
— —
—
—
— —
319
62
27
16
79
30
— —
—
—
— —
79
30
60 28
3,732 181
202 49
7,912 237
— —
— —
—
—
—
—
— —
— —
202 49
7,912 237
3,907 258
8,512 378
— —
—
—
— —
8,512 378
7,866 252 27,428 299
3,999 168
1,802 124
5,810 194
33,238 284
Noncorporate private:
Nongovernmental conservation 230 53
or natural resource
organizations
Unincorporated partnerships,
52 26
associations, or clubs
Native American
142 41
Individual
4,169 190
Total
4,593 310
All owners
19,551 266
3,155 309
719
333
13
88
60
12
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a Forest land that is capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
b Forest land that is not capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment
125
126
273
36
218
10
10
14
—
46
36
206
57
177
4,649
240
1,138
3
10
—
—
15
78
893
138
3,271
191
47
100
3
6
—
—
11
28
90
33
161
99
31
25
—
70
55
32
84
—
19
5,473
155
2,176
44
22
1
—
93
326
1,674
16
3,141
1,802
153
191
—
140
128
27
673
11
15
211
34
145
21
13
1
—
31
57
130
11
158
123
37
39
—
35
32
16
75
11
11
SE
4,701
94
1,721
45
—
—
—
94
616
962
3
2,886
1,827
279
384
—
17
38
—
286
55
—
Total
Total
202
27
132
18
—
—
—
30
82
100
3
156
124
53
58
—
11
19
—
51
26
—
4,776
41
1,931
86
27
25
4
166
689
933
—
2,804
1,413
317
379
—
104
34
13
276
229
39
Thousand acres
SE
204
19
140
30
16
18
4
44
84
98
—
156
109
57
57
—
31
18
12
50
51
19
SE
1,277
34
264
29
2
—
—
21
148
64
—
979
372
150
107
15
15
13
—
76
222
8
Total
114
19
54
17
2
—
—
15
42
25
—
99
57
41
33
13
11
13
—
24
52
8
SE
2,675
40
348
44
2
1
—
18
121
128
34
2,287
1,179
58
854
2
—
9
—
59
125
—
Total
154
16
61
21
2
1
—
12
38
37
18
141
104
26
85
2
—
8
—
22
38
—
SE
33,238
751
13,381
268
80
48
4
610
2,112
9,768
492
19,106
7,879
1,070
2,069
17
1,012
2,020
1,896
2,307
643
194
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a Site productivity class refers to the potential productivity of forest land expressed as the mean annual increment (in cubic feet/acre/year) at culmination in fully stocked stands.
9,668
147
Nonstocked All forest types 5,790
16
17
20
—
203
133
5,100
301
3,731
Total
Hardwoods:
Alder/maple
Aspen/birch
Elm/ash/cottonwood Exotic hardwoods
Other hardwoods
Tanoak/laurel Western oak
Woodland hardwoods
Total
1,172
112
94
—
551
354
95
846
—
48
Softwoods:
California mixed conifer
114
32
Douglas-fir
Fir/spruce/mountain hemlock
52
21
Western hemlock/Sitka spruce —
—
Lodgepole pine
184
41
Other western softwoods
1,444 113
Pinyon/juniper 1,761 127
Ponderosa pine
91
29
Redwood
2
2
Western white pine
84
25
Total
284
79
293
50
24
23
4
79
137
266
69
280
210
97
128
13
91
130
131
134
85
39
SE
Total
Total
SE
SE
Forest type group Total
All
productivity
classes
Site productivity classa (cubic feet/acre/year)
0–19 20–49 50–84 85–119 120–164 165–224 225+ Table 3—Estimated area of forest land, by forest type group and productivity class, California, 2001–2005
GENERAL TECHNICAL REPORT PNW-GTR-763
Corporate private
Noncorporate private
19
17
—
—
24
54
95
34
49
9,784 167
339
2,097 115
53
35
—
—
84
414
1,361
149
7,348 161
87
22
57
56
78
80
40
10
—
32
11
14
7
—
25
27
89
35
37
5,981 178
177
1,651 102
21
31
6
—
88
102
1,255
148
4,153 157
1,105
63
446
418
914
854
206
14
—
134
Total SE
514
46
257
8
—
1
—
—
31
217
—
211
67
12
—
—
76
38
18
—
—
—
77
23
55
8
—
1
—
—
18
50
—
49
28
12
—
—
30
21
13
—
—
—
Total SE
57
21
45
49
68
84
27
18
2
—
21
87
15
3
—
—
18
28
71
35
2,642 142
37
684
20
3
—
—
24
64
471
102
1,921 125
289
36
184
253
391
680
62
24
2
—
Total SE
258
—
139
3
—
—
—
12
36
88
—
119
14
38
12
14
—
11
5
24
—
—
55
—
40
3
—
—
—
12
19
32
—
38
12
22
12
13
—
12
5
18
—
—
Total SE
807
—
561
12
2
—
—
24
103
419
—
246
70
12
22
—
12
45
10
74
—
—
93
—
78
12
2
—
—
18
36
67
—
53
29
12
16
—
12
23
9
30
—
—
Thousand acres
120
16
53
17
15
—
64
60
13
13
32
—
1
4
21
84
89
—
4,402 182
37 19
1,434 125
90
—
1
4
37
633
668
—
2,931 156
1,608
22
244
25
23
—
390
309
14
14
Total SE
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a
Unreserved forest land that is capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
All forest types Nonstocked Total
Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood
Exotic hardwoods Other hardwoods Tanoak/laurel
Western oak Woodland hardwoods Total
Softwoods:
California mixed conifer 4,092 141
Douglas-fir
324 45
Fir/spruce/mountain hemlock 1,077 86
Lodgepole pine 259 45
Other western softwoods 257 42
Pinyon/juniper
45 20
Ponderosa pine 1,240 88
Redwood 7
7
Western hemlock/Sitka spruce — —
Western white pine 46 19
Total SE
14
—
—
—
7
—
13
—
—
—
57
—
—
—
—
—
—
57
—
338
61
— —
301
—
—
—
—
—
—
301
—
37 20
16
—
—
—
9
—
13
—
—
—
Total SE
32
4,604 199
93
2,830 165
48 22
8 8
25 18
0 0
233 52
694 87
1,804 138
18 13
1,681 131
617 81
281 55
84 31
42 22
93 32
10 9
362 62
190 47
1 1
— —
Total SE
1
—
—
—
54
50
1
—
—
—
9
—
12
—
35
21
167
30
3,907 186
22 14
3,426 173
12
—
14
—
107
36
3,183
74
459 73
1
—
—
—
244
213
1
—
—
—
Total SE
Total SE
State and local government
Forest type group Other federal
Other
Other Other
forest land Timberlanda forest land Timberlanda forest land USDA Forest Service
Other
Other
Timberlanda forest land Timberlanda forest land Timberlanda
Table 4—Estimated area of forest land, by forest type group, ownership, and land status, California, 2001–2005
210
97
128
91
130
131
134
85
13
39
79
33,238 284
751
13,381 293
268 50
80 24
48 23
4
4
610 79
2,112 137
9,768 266
492 69
19,106 280
7,879
1,070
2,069
1,012
2,020
1,896
2,307
643
17
194
Total SE
All owners
California’s Forest Resources, 2001–2005
127
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 5—Estimated area of forest land, by forest type group and stand size class, California, 2001–2005
Large-diameter
standsa
Forest type group Softwoods:
California mixed conifer Douglas-fir Fir/spruce/mountain hemlock Lodgepole pine Other western softwoods Pinyon/juniper Ponderosa pine Redwood Western hemlock/Sitka spruce Western white pine Total
Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood Exotic hardwoods Other hardwoods Tanoak/laurel Western oak Woodland hardwoods Total
Nonstocked All forest types Total
SE
Medium-diameter standsb Total
SE
Small-diameter
standsc
Total
All size classes
SE
Total
SE
Thousand acres
7,277
914
1,952
912
1,604
1,496
1,964
604
17
132
204
89
125
87
117
118
125
82
13
31
219
77
6
50
200
216
205
5
—
9
44
30
3
21
43
48
40
5
—
8
383
79
111
50
216
183
138
34
—
52
60
28
29
20
47
42
34
17
—
22
7,879
1,070
2,069
1,012
2,020
1,896
2,307
643
17
194
210
97
128
91
130
131
134
85
13
39
16,873
272
988
95
1,245
106
19,106
280
124
21
32
4
224
1,339
5,276
392
34
12
20
4
48
113
213
61
80
10
2
—
146
456
3,251
69
27
5
1
—
40
70
176
27
64
49
14
—
240
317
1,241
31
24
20
12
—
49
55
108
16
268
80
48
4
610
2,112
9,768
492
50
24
23
4
79
137
266
69
7,412
244
4,013
194
1,956
134
13,381
293
—
—
—
—
—
—
751
79
24,285
304
5,001
213
3,201
167
33,238
284
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a Stands with a majority of trees at least 11.0 inches diameter at breast height for hardwoods and 9.0 inches diameter at breast height for softwoods.
b Stands with a majority of trees at least 5.0 inches diameter at breast height but not as large as large-diameter trees.
c Stands with a majority of trees less than 5.0 inches diameter at breast height.
128
46
24
19
15
25
19
40
19
—
13
87
—
1,724 118
—
867
44 17
8
5
1
1
— —
88 30
202 46
524 67
— —
732 80
250
59
41
21
60
37
211
39
—
14
Total SE
50
54
17
11
28
26
43
35
13
—
—
2,498 151
—
1,375 117
85 31
5
6
14 12
— —
100 32
574 79
571 74
26 15
1,074 101
271
259
42
19
75
55
237
100
16
—
Total SE
21–40
88
52
41
28
46
43
45
39
—
11
27
5
—
—
32
75
133
25
—
4,574 204
—
2,504 158
65
7
—
—
92
521
1,746
74
2,043 140
788
246
196
80
201
172
212
131
—
17
Total SE
41–60
10
8
—
—
34
55
149
37
—
6,674 237
—
2,776 165
17
10
—
—
102
298
2,197
153
3,809 181
1,667 121
151 39
341 57
104 30
532 73
318 55
574 72
105 35
— —
17 11
Total SE
61–80
—
6,206 226
—
2,300 151
28 17
8
8
— —
— —
120 36
164 41
1,891 137
88 31
3,863 175
1,619 116
102 29
413 59
184 42
368 54
436 66
642 74
91 32
— —
8
8
Total SE
80
20
36
29
30
26
34
22
1
8
—
73
9
6
—
—
12
19
66
20
1,958 131
—
522
9
6
—
—
15
36
419
36
1,414 109
748
34
169
90
109
68
147
40
1
8
Total SE
101–120
Total
—
56
—
—
—
—
—
25
49
8
92
62
1
36
32
25
38
20
—
—
8
1,305 108
—
333
—
—
—
—
—
62
263
8
946
431
1
152
96
63
143
53
—
—
8
1,662
—
471
6
—
1
—
16
104
335
9
1,177
404
52
221
137
84
162
90
18
—
8
121
—
68
7
—
1
—
13
34
57
9
100
56
23
43
36
28
41
27
16
—
8
SE
141–160
Thousand acres
Total SE
121–140
Stand age class (years)
81–100
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a The age of the stand is unknown on some plots because no trees were available for boring.
All forest types
Nonstocked
Total
Hardwoods:
Alder/maple
Aspen/birch
Elm/ash/cottonwood
Exotic hardwoods
Other hardwoods
Tanoak/laurel
Western oak
Woodland hardwoods
Total
Softwoods:
California mixed conifer
Douglas-fir
Fir/spruce/mountain hemlock
Lodgepole pine
Other western softwoods
Pinyon/juniper
Ponderosa pine
Redwood
Western hemlock/Sitka spruce
Western white pine
Forest type group
1–20
Table 6—Estimated area of forest land, by forest type group and stand age class, California, 2001–2005
684
—
142
—
8
—
—
—
38
96
—
543
282
35
97
38
29
35
8
—
—
18
76
—
36
—
8
—
—
—
19
30
—
67
49
18
28
17
17
17
8
—
—
12
Total SE
161–180
1,115
—
110
6
7
—
—
—
16
62
19
1,005
410
40
212
87
111
41
66
14
—
23
—
254
—
8
1
—
34
80
115
17
—
46
—
8
1
—
16
25
33
10
97 2,326 134
—
32
6
7
—
—
—
11
25
14
92 2,072 127
87
25
38
36
51
38
22
32
—
23
Total SE
201+
59 1,009
18
90
44
175
28
157
31
268
17
151
25
56
14
92
—
—
14
74
Total SE
181–200
66
—
—
8
—
31
55
12
12
—
—
—
2,194 147
—
1,727 131
7
5
13 13
31 20
4
4
44 20
16 12
1,550 124
62 25
430
—
—
9
—
119
278
11
12
—
—
Total SE
Unknowna
33,238
751
13,381
268
80
48
4
610
2,112
9,768
492
19,106
7,879
1,070
2,069
1,012
2,020
1,896
2,307
643
17
194
Total
284
79
293
50
24
23
4
79
137
266
69
280
210
97
128
91
130
131
134
85
13
39
SE
All forest land
California’s Forest Resources, 2001–2005
129
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 7—Estimated area of timberland, by forest type group and stand size class, California, 2001–2005
Large-diameter
standsa
Forest type group Softwoods:
California mixed conifer
Douglas-fir
Fir/spruce/mountain hemlock
Lodgepole pine
Other western softwoods
Pinyon/juniper
Ponderosa pine
Redwood
Western hemlock/Sitka spruce
Western white pine
Total
Hardwoods:
Alder/maple
Aspen/birch
Elm/ash/cottonwood
Exotic hardwoods
Other hardwoods
Tanoak/laurel
Western oak Woodland hardwoods
Total
Nonstocked All forest types Total
SE
Medium-diameter standsb Total
SE
Small-diameter
standsc
Total
All size classes
SE
Total
SE
Thousand acres
5,816
815
1,343
279
339
104
1,695
493
15
23
187
85
104
49
53
33
115
74
13
14
219
65
4
29
30
—
189
5
—
8
44
27
3
16
16
—
38
5
—
8
363
79
70
32
81
—
132
34
—
29
58
28
24
15
30
—
33
17
—
17
6,399
958
1,417
340
450
104
2,015
531
15
60
194
93
106
54
63
33
125
77
13
23
10,922
234
548
68
819
86
12,290
244
108
15
25
4
186
1,146
2,445
132
32
11
18
4
44
104
153
34
48
6
1
—
47
418
1,216
17
21
5
1
—
23
67
111
10
47
22
1
—
133
243
465
18
22
15
1
—
37
49
64
10
203
44
27
4
366
1,808
4,127
168
44
19
18
4
62
127
193
37
4,063
188
1,754
131
929
92
6,746
228
—
—
—
—
—
—
515
66
14,985
259
2,302
147
1,749
123
19,551
266
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a Stands with a majority of trees at least 11.0 inches diameter at breast height for hardwoods and 9.0 inches diameter at breast height for softwoods.
b Stands with a majority of trees at least 5.0 inches diameter at breast height but not as large as large-diameter trees.
c Stands with a majority of trees less than 5.0 inches diameter at breast height.
130
975,879 53,318
All species groups 7,057
181
5,033
4,605
4,012
6,525
3,464
442
1,418
7,953
1,385
75
1,020
2,433
SE
665,635 21,311
1,795
585
399,283 17,793
233,351 12,369
8,372 1,996
22,834 3,025
651,852 15,848
144,833
362
74,356
33,162
49,776
113,551
26,782
742
12,897
164,640
2,826
73
6,596
21,255
Total
5.0–6.9 4,642,023 158,831 1,952,488 66,578 1,317,487 25,923
2,427,780 127,514
Total 8,223 3,794
548,665 41,282
383,113 31,809
6,539 2,796
29,339 10,222
18,759
—
14,572
10,818
9,480
12,753
9,481
1,981
4,960
20,679
3,463
—
2,894
5,969
SE
Hardwoods:
Cottonwood and aspen 68,843 23,434
Oak 1,138,552 92,022
Other western hardwoods 1,157,168 83,263
Red alder 14,939
6,330
Western woodland hardwoods 48,278 12,436
230,294
—
131,272
51,999
62,785
135,225
36,891
2,054
20,426
257,329
6,536
—
8,673
33,124
Total
976,609 39,685
41,419
1,257
30,514
18,495
21,919
25,472
25,842
1,111
8,534
49,556
5,206
—
5,849
20,971
SE
3.0–4.9 2,214,243 92,277
Total 540,741
2,120
290,151
95,775
159,226
248,740
144,969
1,255
50,882
589,989
13,440
—
23,813
53,143
Total
Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Western woodland softwoods 1.0–2.9 Species group SE
4,910
94
3,329
2,370
2,790
5,231
2,532
196
1,099
5,651
393
225
667
1,793
875,320 16,163
414,540 12,713
1,200
394
256,099 10,510
133,945 7,398
6,603 1,530
16,694 2,552
460,780 10,917
98,972
189
45,555
19,434
36,481
88,115
19,524
331
10,719
119,343
1,357
220
4,418
16,123
Thousand acres
Total
7.0–8.9 8,071
369
6,175
4,894
1,790
1,725
8,152
3,791
47
2,351
2,343
1,867
4,023
1,701
239
910
4,163
527
47
514
1,725
SE
584,099 11,012
246,890
970
148,655
79,595
6,976
10,693
337,209
71,985
47
29,514
16,949
24,565
68,639
14,378
247
7,109
83,851
1,232
46
3,084
15,563
Total
9.0–10.9 Diameter class (inches)
392,911
148,724
729
83,501
53,049
4,627
6,817
244,187
49,616
97
19,524
12,543
18,397
47,640
14,132
165
5,412
61,437
651
—
1,914
12,660
Total
8,087
5,530
361
3,817
3,653
1,419
1,107
6,132
2,785
67
1,571
1,550
1,474
2,865
1,801
159
647
3,213
252
—
364
1,483
SE
11.0–12.9 Table 8—Estimated number of live trees on forest land, by species group and diameter class, California, 2001–2005
2,100
—
1,426
1,487
1,107
2,074
1,661
159
440
2,511
293
150
335
1,399
SE
278,844 6,116
92,788 3,808
586
257
54,280 2,749
31,354 2,435
1,690
649
4,878
826
186,056 4,926
37,398
—
14,066
11,594
12,364
35,475
10,908
165
2,913
47,872
486
147
1,657
11,012
Total
13.0–14.9 200,584
58,013
648
33,345
20,583
876
2,561
142,571
30,772
94
10,493
7,642
9,749
26,957
7,638
247
3,934
34,917
414
—
1,335
8,378
Total
4,707
2,786
278
1,910
1,850
275
573
3,953
1,936
94
1,066
1,095
930
1,799
1,061
239
578
2,014
177
—
306
1,007
SE
15.0–16.9
California’s Forest Resources, 2001–2005
131
132
20,516
—
7,993
7,728
8,048
19,064
6,433
330
2,774
27,252
303
—
973
5,372
106,785
38,367
2,086
250
1,441
1,414
188
327
3,288
1,341
—
861
1,056
903
1,324
1,211
318
435
1,691
152
—
303
681
SE
21,982
696
12,619
7,695
157
816
78,220
12,995
50
5,290
5,122
6,683
15,090
5,965
—
3,288
19,514
220
—
543
3,460
Total
1,438
333
1,007
893
110
259
2,693
1,010
48
666
755
773
1,127
1,119
—
516
1,293
168
—
183
580
SE
19.0–20.9 26,110
495
14,244
10,056
162
1,153
101,768
18,981
174
7,257
7,518
7,626
16,662
7,517
73
4,658
27,026
7
—
1,120
3,147
Total
1,615
181
1,111
1,091
103
311
3,150
1,343
103
898
1,005
910
1,160
1,087
75
532
1,640
7
—
268
537
SE
21.0–24.9 9,051
243
5,421
3,148
30
209
60,111
11,597
63
4,325
3,940
3,544
10,338
4,685
53
2,763
16,574
67
37
813
1,312
Total
484
120
331
315
17
62
1,515
611
31
322
452
372
535
625
43
220
904
35
37
126
184
SE
4,269
120
2,686
1,358
49
55
38,162
8,123
40
2,376
2,219
2,314
6,588
2,815
55
2,005
10,430
15
57
668
457
Total
287
50
221
173
25
29
1,089
455
21
202
291
265
408
406
32
209
622
11
50
106
85
SE
29.0–32.9 Diameter class (inches)
25.0–28.9 Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
Total 373
21,933
13,981
535
1,545
Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder Western woodland hardwoods Total Total
Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Western woodland softwoods 17.0–18.9 Species group 1,812
7
1,088
689
15
12
24,866
5,947
7
1,910
957
1,329
3,928
2,026
14
1,339
6,554
24
69
466
298
Total
176
8
128
117
15
12
818
368
8
196
169
186
278
314
13
136
455
18
63
83
68
SE
33.0–36.9 37+ 810
—
265
116
283
358
694
69
229
810
25
53
146
65
SE
1,665
21
1,025
596
—
24
189
15
138
129
—
18
42,483 1,526
13,083
—
2,788
704
1,914
5,091
4,054
96
2,624
10,689
24
71
1,076
267
Total
Table 8—Estimated number of live trees on forest land, by species group and diameter class, California, 2001–2005 (continued)
64,428
1,567
46,460
34,965
32,504
43,079
41,406
2,764
13,843
77,970
9,237
634
9,199
26,333
SE
5,133,505 177,176
84,951 25,745
2,721,396 131,193
2,129,681 115,777
51,569 11,539
145,908 24,886
5,665,903 142,105
1,295,852
3,241
646,868
277,288
404,801
841,105
308,717
5,826
133,742
1,477,418
27,604
720
57,150
185,571
Total
All classes
GENERAL TECHNICAL REPORT PNW-GTR-763
Total Total All species groups Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder 99,180
18,347
60,632
76,232
5,012
84,839
17,356
—
13,996
9,117
6,014
12,344
9,436
1,981
4,819
18,886
3,412
—
2,418
SE
583,883 38,930
915
935
277,164 28,533
299,266 26,193
6,539 2,796
774,548 36,342
204,555
—
119,284
28,509
24,881
123,477
35,976
2,054
18,061
206,470
5,954
—
5,327
Total
3.0–4.9 3,411,164 134,493 1,358,432 54,094
1,605,029
36,399
619,800
937,467
11,363
1,806,134
503,743 40,797
915
935
265,068 29,742
54,042 15,740
53,184 11,478
235,476 25,186
138,894 25,398
1,255
1,111
45,554
8,311
480,762 46,503
11,503 5,002
—
—
15,738 5,222
SE
Total
Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine 1.0–2.9 Species group SE
909,701 22,203
402,450 16,334
1,188
531
209,006 12,195
185,421 11,383
6,834 1,812
507,251 14,733
132,043 6,640
73
75
65,281 4,737
16,470 3,972
15,820 2,182
101,588 6,238
25,533 3,411
330
194
11,646 1,377
132,796 7,312
2,432 1,358
73
75
3,165
733
Total
5.0–6.9 SE
4,715
—
3,151
1,717
1,391
5,008
2,497
114
1,051
5,106
311
225
397
9,810
348
7,563
6,628
1,150
601,025 14,142
246,542
867
133,304
107,689
4,683
Total
404,117
146,359
652
75,355
65,337
5,014
257,759
64,554
—
26,334
6,935
8,869
61,434
13,300
247
6,195
67,505
1,085
—
1,299
9,669
6,328
293
4,350
4,466
1,432
7,431
3,622
—
2,242
1,462
1,128
3,797
1,643
239
864
3,756
505
—
323
SE
9.0–10.9 Thousand trees
354,483 10,148
90,138
—
40,637
8,953
11,088
78,459
18,569
166
9,569
93,999
875
220
1,812
Total
7.0–8.9 Diameter class (inches)
276,833
92,182
187
43,728
45,301
2,966
184,652
44,780
—
17,208
5,354
6,532
42,683
12,909
165
4,425
48,957
610
—
1,028
Total
7,135
4,576
108
2,945
3,333
978
5,499
2,600
—
1,495
1,123
891
2,769
1,642
159
567
2,882
248
—
260
SE
11.0–12.9 2,020
—
1,366
841
621
1,976
1,615
159
409
2,317
283
150
223
192,442 5,271
53,935 2,912
416
179
26,991 1,948
25,544 2,082
984
436
138,507 4,374
34,036
—
12,500
4,231
4,118
31,490
10,200
165
2,472
37,986
413
147
751
SE
13.0–14.9 Total
Table 9—Estimated number of growing-stock treesa on timberland, by species group and diameter class, California, 2001–2005
140,384
34,963
477
17,339
16,501
646
105,422
28,191
—
9,534
2,322
3,258
24,022
7,315
247
3,466
26,189
294
—
582
Total
4,117
2,235
250
1,373
1,655
242
3,538
1,876
—
1,033
524
559
1,723
1,049
239
544
1,793
153
—
196
SE
15.0–16.9
California’s Forest Resources, 2001–2005
133
134
99,880
21,589
—
10,214
10,883
492
3,276
1,526
—
905
1,206
183
2,913
1,302
—
824
533
480
1,263
1,200
318
413
1,482
80
—
178
SE
66,847
12,146
386
5,707
5,970
82
54,700
11,492
—
4,468
1,180
1,738
13,039
5,568
—
2,536
14,353
—
—
325
Total
2,518
1,044
237
633
751
80
2,297
945
—
617
269
382
1,056
1,100
—
442
1,092
—
—
140
SE
19.0–20.9 1,209
142
821
837
103
2,601
1,270
89
802
339
376
1,090
1,010
—
484
1,342
—
—
190
SE
86,056 2,864
15,686
286
7,694
7,544
162
70,370
16,702
101
5,812
1,480
2,051
14,123
6,655
—
3,920
19,022
—
—
505
Total
21.0–24.9 46,976
5,493
180
2,864
2,419
30
41,483
9,829
—
3,688
832
741
8,481
3,985
53
2,325
11,158
55
37
300
Total
Total
1,370
373
112
227
265
17
1,306
565
—
298
190
191
500
554
43
208
732
33
37
81
28,442
2,780
101
1,552
1,086
42
25,662
6,837
8
1,970
462
431
5,274
2,423
27
1,450
6,509
8
49
213
Thousand trees
SE
942
227
47
157
155
23
909
426
8
184
128
114
360
381
19
159
464
8
50
58
SE
29.0–32.9 Diameter class (inches)
25.0–28.9 17,299
1,018
7
519
492
—
16,281
4,956
—
1,503
135
279
2,863
1,611
—
993
3,744
—
61
134
Total
692
134
8
85
103
—
670
343
—
174
39
70
239
265
—
114
306
—
62
42
SE
33.0–36.9 Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500 trees were estimated.
a Growing-stock trees are live trees of commercial species that meet certain merchantability standards; excludes trees that are entirely cull (rough or rotten tree classes).
All species groups Total Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder 78,292
18,651
—
7,262
2,227
2,765
17,175
6,057
330
2,417
20,803
82
—
524
Total Total
Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine 17.0–18.9 Species group 751
—
226
60
84
249
480
67
171
531
—
25
53
SE
156
—
98
122
—
27,018 1,209
992
—
490
502
—
26,026 1,188
10,474
—
2,050
157
364
3,176
2,379
82
1,715
5,396
—
24
209
Total
37+ Table 9—Estimated number of growing-stock treesa on timberland, by species group and diameter class, California, 2001–2005 (continued)
62,293
1,014
44,920
28,497
17,992
42,248
40,613
2,697
13,510
72,057
9,006
625
7,813
SE
7,666,616 198,381
3,225,047 140,889
42,062 19,105
1,431,729 91,610
1,711,419 106,000
39,837 10,063
4,441,569 132,953
1,180,979
1,098
582,600
133,290
136,120
762,762
291,374
5,121
116,742
1,175,649
23,311
612
31,911
Total
All classes
GENERAL TECHNICAL REPORT PNW-GTR-763
California’s Forest Resources, 2001–2005
Table 10—Estimated net volume of all live trees, by owner class and forest land status, California, 2001–2005
Unreserved forests
a
Timberland Other forest Owner class
Total SE
USDA Forest Service:
National forest State and local government:
State Local Other public Total
Corporate private:
Total SE
Reserved forests
Productivea Other forestb
Total
Total SE
Total SE
Total SE
Total
All forest land
Total SE
Total SE
Million cubic feet
38,479 1,050
Other federal government:
National Park Service Bureau of Land Management U.S. Fish and Wildlife Service Departments of Defense and Energy
Other federal Total
b
1,665 169 40,144 1,045 11,816 784
—
986
—
15
—
236
—
12
—
299
—
54
—
53
—
34
43
43
4
3
1,044
291
357
90
854
326
—
296
160
—
61
150
—
37
51
—
1,180
456
211
88
12,891
742
342
73 13,232 743
—
—
—
—
—
— 13,232 743
191
36
21
770 192
—
—
—
—
—
—
770 192
112
25
16
201
114
—
—
—
—
—
—
201
805 286
15,165 859
—
—
—
—
—
—
—
—
—
—
—
805 286
— 15,165 859
—
—
—
—
—
— 16,941 1,451
Noncorporate private:
“Nongovernmental 734
conservation or natural
resource organizations”
“Unincorporated partnerships, 175
associations, or clubs”
Native American 763
Individual 12,221
285
848
42 27
2,925 215
— — 5,234 735
1,285 240
82 60
— —
19 20
69 36
— —
858 117 12,688 786 52,832 1,074
47
44
352 199
1,401 320 5,687 1,014
916 298
476 167
— —
3,111 1,191
143 101
— —
1,392 465 3,254 1,292
338 108
82 27
— —
— —
105
71
5,572 733
164 66
20 20
— —
457
210
5,572 733
1,449 248
20 20
69 36
504
215
525 206
6,213 1,029
7,614 1,252
191
91
3
58
59
3
3,302 1,191
234 117
3
3
4,217 1,222
710 203
3
3
285 120
3,539 1,311
4,930 1,428
114
Total
13,893 1,436
3,028 279 16,941 1,451
All owners 67,488 1,495
5,603 293 73,109 1,488 20,757 1,599 1,667 194 22,438 1,597 95,547 2,006
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error;— = less than 500,000 cubic feet were estimated.
a Forest land that is capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
b Forest land that is not capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment
135
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 11—Estimated net volume of all live trees on forest land, by forest type group and stand size class,
California, 2001–2005
Large-diameter
standsa
Forest type group Total
SE
Medium-diameter standsb Total
SE
Small-diameter
standsc
All size classes
Total
SE
Total
SE
Million cubic feet
Softwoods:
California mixed conifer 35,427
Douglas-fir 6,043
Fir/spruce/mountain hemlock 11,187
Lodgepole pine
3,431
Other western softwoods 1,258
Pinyon/juniper 648
Ponderosa pine 4,951
Redwood 6,427
Western hemlock/Sitka spruce 170
Western white pine 331
1,181
691
876
395
146
76
381
1,416
115
98
292
149
2
77
55
18
79
9
—
2
73
66
1
46
22
6
23
8
—
2
167
54
47
5
17
10
12
14
—
22
38
24
16
3
6
3
5
8
—
13
35,886
6,246
11,235
3,512
1,330
676
5,042
6,449
170
355
1,178
694
876
397
148
76
381
1,416
115
99
Total
69,872
2,000
683
113
347
51
70,901
1,995
Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood Exotic hardwoods Other hardwoods Tanoak/laurel Western oak Woodland hardwoods 657
60
135
14
901
7,264
10,088
223
206
37
87
11
210
713
541
40
228
7
1
—
119
1,134
3,281
21
85
4
1
—
51
198
231
10
38
9
4
—
40
90
265
3
22
5
4
—
11
29
34
2
924
76
141
14
1,060
8,488
13,634
248
224
38
87
11
216
728
571
41
Total
19,343
915
4,791
314
449
52
24,584
929
—
—
—
—
—
—
62
13
89,215
2,043
5,474
332
796
72
95,547
2,006
Nonstocked All forest types Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 cubic feet were estimated.
a Stands with a majority of trees at least 11.0 inches diameter at breast height for hardwoods and 9.0 inches diameter at breast height for softwoods.
b Stands with a majority of trees at least 5.0 inches diameter at breast height but not as large as large-diameter trees.
c Stands with a majority of trees less than 5.0 inches diameter at breast height.
136
California’s Forest Resources, 2001–2005
Table 12—Estimated net volume of all live trees on forest land, by species group and ownership group,
California, 2001–2005
Forest Service Species group Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Western woodland softwoods Total
Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder Western woodland hardwoods Total All species groups Total
SE
Other
federal Total SE
State and local
government Total SE
Corporate
private
Total
Noncorporate
private
SE
Total
SE
All owners
Total
SE
Million cubic feet
13,071
29
2,607
2,256
1,593
8,763
276
—
2,694
14,867
7
54
790
319
635
13
179
231
170
380
191
—
184
732
5
41
92
37
47,327 1,039
923
—
194
1,011
456
740
515
16
269
2,207
22
—
75
220
245
—
59
230
109
146
356
15
98
431
12
—
28
45
628 182
— —
71 38
26 24
88 33
175 82
2,1691,083
7
7
52 27
270 112
58 57
— —
7
6
17
9
3,282 312
11 10
699 92
142 73
86 26
1,662 186
1,851 300
67 49
533 73
1,893 236
60 28
— —
21 11
— —
3,585
—
504
96
525
1,643
2,120
43
166
572
24
—
11
34
422
—
102
59
62
210
425
40
53
106
16
—
7
9
21,489
852
40
16
4,075 234
3,531
339
2,748
215
12,983 494
6,931 1,255
133
65
3,714 228
19,809 892
172
67
54
41
904
97
591
60
6,650 735
3,5681,189
10,305 645
9,323
738
77,173 1,906
30 28
572 95
711 175
47 48
1
2
7
6
1,197 129
1,472 205
248 75
3
2
103
4,830
2,633
35
17
64
243
256
16
9
220
10,810
6,743
435
167
76
351
392
99
23
539
76
3,574
1,704
40
111
29
188
164
12
18
4
636
224
65
34
4
116
66
38
12
5,505
255
963 148
1,362 213
2,927 259
7,618
378
18,374
52,832 1,074
7,613 776
4,9301,238
13,232 743
16,941
917
95,547 2,006
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 cubic feet were estimated.
137
Table 13—Estimated
net volume
of all live trees on forest land, by species group and diameter class,
GENERAL
TECHNICAL REPORT
PNW-GTR-763
California, 2001–2005
Diameter class (inches)
Species group Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Western woodland softwoods Total Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder Western woodland hardwoods Total All species groups 5.0–6.9 7.0–8.9 9.0–10.9 11.0–12.9 13.0–14.9 15.0–16.9 17.0–18.9
Total SE
Total SE
Total SE
Total SE
Total SE
Total SE
Total SE
1,245
3
250
256
187
842
230
13
122
1,110
23
—
34
92
1,108
—
259
349
225
847
273
20
126
1,238
19
—
36
61
Million cubic feet
498
—
153
74
66
203
40
2
25
355
8
—
10
28
27
—
11
11
7
12
5
1
3
18
5
—
2
4
684
—
177
95
107
326
80
2
41
543
10
1
14
35
36
—
13
13
10
19
11
1
4
27
3
2
2
4
901
—
205
159
137
510
114
4
57
729
18
1
19
58
50
—
17
23
12
31
14
4
8
39
8
1
3
8
979
1
213
188
168
605
181
4
70
899
15
—
21
69
58
1
17
25
15
37
23
4
9
49
6
—
4
11
1,075
—
235
264
178
743
228
7
60
1,064
16
3
30
88
1,464
40
2,116
55
2,913
79
3,413
95
3,991 114
2
885
503
26
14
1
41
28
7
2
4
1,219
642
51
21
1
52
38
12
4
8
1,278
727
104
23
3
55
47
28
4
9
1,203
797
103
22
5
58
56
32
4
12
1,156
729
56
24
5
60
59
22
4
23
997
654
32
16
11
59
61
10
4
11
851
616
27
13
7
57
66
9
3
1,430
49
1,938
63
2,139
76
2,134
86
1,978
87
1,721
88
1,518
89
2,895
63
4,054
84
5,052 109
5,547 130
63
—
25
36
18
45
35
7
9
57
10
3
6
16
5,969 144
81
3
26
37
20
59
33
12
18
68
10
—
9
18
4,408 134
6,129 158
77
—
29
51
30
62
55
20
20
81
10
—
11
8
4,560 154
6,078 177
Diameter class (inches)
19.0–20.9 Species group Total SE
Softwoods:
Douglas-fir 923 76
Engelmann and other spruces 1 1
Incense-cedar 227 29
Lodgepole pine 319 54
Other western softwoods 261 35
Ponderosa and Jeffrey pines 923 73
Redwood 327 63
Sitka spruce — —
Sugar pine 201 32
True fir 1,159 80
Western hemlock 27 23
Western redcedar — —
Western white pine 26 9
Western woodland softwoods 50 9
Total 21.0–24.9 25.0–28.9 Total SE Total SE
29.0–32.9 33.0–36.9 Total SE
Total SE
37.0+ Total
All classes
SE
Total
SE
Million cubic feet
1,924
17
430
614
394
1,485
589
7
392
2,274
1
—
72
51
148 1,738 98 1,684 103
11
8 4
6
3
55
400 31
300 26
83
455 54
350 49
57
269 34
224 32
107 1,474 83 1,363 93
87
590 84
490 76
7
8 7
12
7
44
369 31
402 44
145 2,177 127 1,933 122
1
10 5
4
3
—
4 4
9
8
18
84 13
93 15
10
30 5
14
3
7,084 511
—
—
900
95
207
38
337
59
2,532 192
3,323 1,139
50
37
1,496 148
4,699 394
15
15
21
16
375
58
7
2
21,489 852
40
16
4,075 234
3,531 339
2,748 215
12,983 494
6,931 1,255
133
65
3,714 228
19,809 892
172
67
54
41
904
97
591
60
6,071 217
21,045 1,396
77,173 1,906
4,445 167
8,249 275
Hardwoods:
Cottonwood and aspen 45 22
Oak 640 54
Other western hardwoods 413 49
Red alder 11 8
Western woodland hardwoods 8 3
47 19
1,025 84
764 86
11 8
17 5
33 17
584 38
350 38
3 2
5 2
17
411
209
8
2
7
36
28
4
1
1
202
145
3
1
1
27
29
3
1
7
359
195
—
1
5
57
47
—
1
220
10,810
6,743
435
167
76
351
392
99
23
1,863 123
975
648
47
352
40
562
74
18,374
539
Total All species groups 1,116 78
5,561 185
7,616 212 6,881 218
1,645 111
2
2
325 35
200 37
196 34
1,131 87
466 74
4
4
354 37
1,630 118
5
4
14 13
91 16
9
2
57
10,113 301 8,591 220
7,529 223
6,423 223
21,607 1,399
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 cubic feet
138
95,547 2,006
5.0–6.9 2,143
933
1
506
405
20
1,210
453
0
135
43
26
184
39
1
23
294
8
—
6
56
40
1
31
26
5
38
24
0
10
10
5
12
5
1
3
17
5
—
1
Total SE
7.0–8.9 3,002
1,266
3
698
528
37
1,735
625
—
159
49
43
292
77
1
37
437
6
1
7
77
52
1
41
34
9
52
34
—
12
10
8
18
11
1
4
24
2
2
2
Total SE
9.0–10.9 3,781
1,414
5
715
616
78
2,367
811
—
184
72
63
460
106
4
49
593
16
—
9
99
64
2
42
43
24
74
48
—
16
16
10
29
14
4
7
34
8
—
2
Total SE
11.0–12.9
74
2
47
51
24
87
54
—
16
18
11
36
23
4
8
43
6
—
3
4,198 116
1,450
2
688
690
70
2,748
879
—
188
85
73
545
169
4
58
720
15
—
12
Total SE
60
—
24
21
13
43
34
7
8
53
10
3
4
71
4
46
51
13
4,463 129
1,276
10
628
608
31
3,187 104
982
—
211
99
74
667
211
7
50
856
14
3
14
Total SE
13.0–14.9
78
—
25
20
13
57
33
12
17
61
8
—
5
75
10
46
56
9
4,638 144
1,139
17
567
532
23
3,499 124
1,135
—
227
86
69
755
221
13
110
855
16
—
13
Million cubic feet
Total SE
15.0–16.9 74
—
27
27
20
59
55
20
19
70
4
—
7
4,517 157
951 71
— —
444 41
483 57
25 9
3,566 140
1,008
—
235
109
93
766
256
20
109
945
4
—
20
Total SE
17.0–18.9 Diameter class (inches)
70
—
28
17
21
69
62
—
29
65
—
—
8
62
16
39
43
6
4,003 158
710
25
342
335
6
3,293 143
807
—
195
76
86
808
308
—
157
838
—
—
17
Total SE
19.0–20.9 Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 cubic feet were estimated.
a
Growing–stock trees are trees of commercial species that meet certain merchantability standards; excludes trees that are entirely cull (rough or rotten tree classes).
All species groups Total Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder Total Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Species group 202
10
70
48
44
148
143
7
57
199
5
4
18
13,547 396
1,904 125
53 31
968 79
869 86
14 8
11,643 373
3,171
11
700
243
202
2,492
1,028
8
653
3,057
8
4
65
Total SE
21.0–28.9 Table 14—Estimated net volume of growing–stock treesa on timberland, by species group and diameter class, California, 2001–2005
29.0+ 587
1
112
49
50
230
319
41
139
372
1
27
30
23,073 910
1,056 101
16 8
586 61
448 80
7 4
22,017 894
8,591
1
1,190
164
218
3,540
1,966
51
1,565
4,563
1
27
140
Total SE
815
10
215
160
123
442
526
63
188
673
33
36
51
461
65
276
346
78
67,364 1,494
12,100
134
6,142
5,512
311
55,265 1,355
18,462
13
3,423
1,027
946
10,509
4,380
111
2,810
13,157
88
36
303
SE
All classes
Total
California’s Forest Resources, 2001–2005
139
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 15—Estimated net volume of growing-stock treesa on timberland, by species group and ownership
group, California, 2001–2005
Forest Service Species group Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Total Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder Total All species groups Total
SE
Other
federal Total SE
State and local
government Total SE
Corporate
private
Total
Noncorporate
private
All owners
SE
Total
SE
Total
SE
815
10
215
160
123
442
526
63
188
673
33
36
51
Million cubic feet
10,892
2
2,192
763
540
7,109
24
—
2,109
10,595
1
36
265
616
1
167
129
104
348
24
—
166
619
1
36
49
487
—
32
—
36
101
—
—
10
12
—
—
—
161
—
27
—
15
39
—
—
6
7
—
—
—
257
—
—
26
47
43
386
—
6
95
3
—
7
135
—
—
24
30
22
167
—
6
80
3
—
6
3,276 312
11 10
696 92
142 73
56 21
1,630 186
1,851 300
67 49
519 73
1,884 236
60 28
— —
21 11
3,550
—
504
96
267
1,626
2,120
43
166
570
24
—
11
421
—
102
59
53
210
425
40
53
106
16
—
7
18,462
13
3,423
1,027
946
10,509
4,380
111
2,810
13,157
88
36
303
34,527
993
679 176
869
281
10,213 645
8,977
738
55,265 1,355
25
2,378
1,429
34
11
155
154
11
4 4
241 65
104 49
— —
—
120
186
—
—
47
73
—
7
6
953 117
1,464 204
248 75
98
2,449
2,329
29
64
192
246
16
134
6,142
5,512
311
65
276
346
78
3,867
226
349 90
306
91
2,671 252
4,906
338
12,100
461
38,394 1,050
1,028 240
1,175
335
12,884 742
13,883
907
67,364 1,494
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 cubic feet were estimated.
a Growing-stock trees are trees of commercial species that meet certain merchantability standards; excludes trees that are entirely cull (rough or rotten
tree classes).
140
a on timberland, by species
Table 16—Estimated net volume (International 1/4-inch rule) of sawtimber trees
California’s
Forest Resources, 2001–2005
group and diameter class, California, 2001–2005
Diameter class (inches)
Species group 9.0–10.9 11.0–12.9 13.0–14.9 15.0–16.9 17.0–18.9 19.0–20.9 21.0–22.9
Total SE
Total SE
Total SE
Total SE
Total SE
Total SE
Total SE
4,966
—
1,070
461
492
4,837
1,801
—
943
4,950
—
—
—
98
5,515
—
1,083
519
333
3,925
1,914
—
790
5,321
—
—
—
66
Softwoods:
Douglas-fir 3,595 215
Engelmann and other spruces — —
Incense-cedar 679 60
Lodgepole pine 303 71
Other western softwoods 248 40
Ponderosa and Jeffrey pines 1,755 114
Redwood 410 54
Sitka spruce 20 19
Sugar pine 191 29
True fir 2,371 139
Western hemlock 71 36
Western larch — —
Western redcedar — —
Western white pine 34 10
Total Hardwoods:
Ash Cottonwood and aspen Oak Other western hardwoods Red alder Total All species groups 9,676 315
Million board feet (International-1/4-inch rule)
4,500
—
810
416
330
2,480
775
25
264
3,408
78
—
—
56
280
—
70
87
52
165
107
24
37
206
33
—
—
15
5,421
—
1,003
519
372
3,400
1,072
41
253
4,432
80
—
16
71
336
—
115
112
67
223
173
39
43
277
54
—
17
22
6,557
—
1,143
490
351
4,120
1,195
78
599
4,700
99
—
—
66
457
—
127
117
67
318
181
75
95
341
52
—
—
23
6,047
—
1,236
637
511
4,390
1,446
126
629
5,432
25
—
—
109
450
—
146
156
115
343
316
121
110
411
24
—
—
38
435
—
153
105
122
421
364
—
176
387
—
—
—
43
13,141 430 16,679 558 19,399 704 20,587 826 19,620 868
—
—
—
—
—
—
—
—
—
—
— —
9
7
689 47
2,219 184
332 115
—
—
3,250 219
9,676 315
16,391 502
19,466 971
— —
50 22
662 50
2,000 192
166 69
— —
96 54
620 52
1,738 210
128 47
— —
— —
536 56
1,602 213
146 54
—
153
414
1,335
40
2,878 211
2,582 230
2,284 226
1,942 219
2,018 274
19,557 610 21,981 740 22,870 860 21,562 900
21,4841,009
—
97
49
186
39
596
—
183
140
95
398
351
—
152
459
—
—
—
32
— —
126 83
435 57
1,458 255
— —
Diameter class (inches)
Species group Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western larch Western redcedar Western white pine Total Hardwoods:
Ash Cottonwood and aspen Oak Other western hardwoods Red alder Total All species groups 23.0–24.9 Total
SE
25.0–26.9 Total SE
27.0–28.9 Total SE
29.0+ Total
SE
All classes
Total
SE
Million board feet (International 1/4-inch rule)
5,252
72
930
338
364
3,944
1,291
—
1,284
4,457
—
—
—
122
497
64
157
105
88
370
236
—
180
411
—
—
—
47
5,122
—
1,011
363
237
4,139
1,589
37
979
4,850
23
—
9
79
347
—
94
99
77
286
251
29
102
349
16
—
9
27
4,692
—
1,050
320
278
3,905
1,599
19
1,051
4,577
28
—
17
124
357
—
107
81
92
301
262
19
132
372
27
—
17
40
60,277 4,196
9
9
7,636
735
1,098
334
1,422
337
24,656 1,629
13,274 2,177
361
290
10,959
990
31,224 2,589
10
10
—
—
173
177
929
205
111,942
81
17,651
5,464
4,939
61,551
26,365
707
17,943
75,724
414
—
215
1,754
5,435
65
1,202
905
742
2,771
3,322
405
1,259
4,182
157
—
219
311
18,055
834
18,438
666
17,660
701
152,028 6,302
324,750
8,781
—
56
428
738
66
—
25
61
131
50
—
51
268
640
12
—
31
27
85
9
—
108
237
457
8
—
74
27
79
7
—
749
5,301
14,035
944
—
404
289
1,158
235
1,288
155
972
95
810
112
19,343
857
19,410
677
18,470
712
—
98
1,012
1,848
47
—
47
124
427
26
3,005
447
21,028
1,288
155,034 6,363
345,779
9,095
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 board feet were estimated.
a Sawtimber trees have merchantability limits that differ for softwood and hardwood species as follows: ≥9 inches diameter at breast height for
softwoods and ≥11 inches diameter at breast height for hardwoods.
141
Table 17—Estimated
net volume
(Scribner
GENERAL
TECHNICAL REPORT
PNW-GTR-763
diameter class, California, 2001–2005
rule) of sawtimber treesa on timberland, by species group and
Diameter class (inches)
Species group 9.0–10.9 11.0–12.9 13.0–14.9 15.0–16.9 17.0–18.9 19.0–20.9 21.0–22.9
Total SE
Total SE
Total SE
Total SE
Total SE
Total SE
Total SE
4,307
—
885
397
415
4,145
1,528
—
809
4,219
—
—
—
82
4,860
—
904
453
282
3,410
1,652
—
680
4,595
—
—
—
55
Softwoods:
Douglas-fir 2,698 162
Engelmann and other spruces — —
Incense-cedar 501 45
Lodgepole pine 226 53
Other western softwoods 185 30
Ponderosa and Jeffrey pines 1,301 84
Redwood 304 40
Sitka spruce 15 14
Sugar pine 141 21
True fir 1,760 103
Western hemlock 53 27
Western larch — —
Western redcedar — —
Western white pine 25
7
Total Hardwoods:
Ash Cottonwood and aspen Oak Other western hardwoods Red alder Total All species groups 7,210 235
Million board feet (Scribner rule)
3,562 222
— —
623 54
326 68
257 41
1,923 128
602 84
21 20
205 29
2,659 161
62 26
— —
— —
43 12
4,440
—
793
420
299
2,728
861
34
202
3,570
66
—
13
57
277
—
91
91
55
180
139
33
34
224
45
—
13
18
5,499
—
920
408
285
3,394
981
67
493
3,878
85
—
—
53
386
—
103
98
55
263
150
64
78
283
44
—
—
18
5,170
—
1,007
539
424
3,690
1,208
109
528
4,570
22
—
—
90
387
—
119
133
98
290
266
105
93
348
21
—
—
31
380
—
127
91
104
363
309
—
151
331
—
—
—
36
10,283 339 13,482 453 16,062 587 17,356 702 16,788 748
529
—
153
122
81
348
305
—
131
399
—
—
—
27
16,891 851
—
—
—
—
—
—
—
—
—
—
— —
8
6
601 41
1,954 163
298 103
— —
42 18
537 40
1,654 160
141 59
—
81
494
1,429
108
—
46
41
174
40
— —
— —
425 46
1,330 178
125 46
—
134
325
1,121
35
—
85
39
157
34
— —
113 75
342 45
1,242 222
— —
—
—
2,861 194
2,374 176
2,111 191
1,881 189
1,615 186
1,697 238
13,144 408 15,856 498 18,173 618 19,237 730 18,403 775
18,587 884
7,210 235
Diameter class (inches)
Species group Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western larch Western redcedar Western white pine Total Hardwoods:
Ash Cottonwood and aspen Oak Other western hardwoods Red alder Total All species groups 23.0-24.9 Total
SE
25.0-26.9 Total SE
27.0-28.9 Total SE
29.0+ Total SE
All classes
Total
SE
Million board feet (Scribner rule)
4,672
64
780
299
310
3,472
1,118
—
1,122
3,901
—
—
—
104
447
57
133
92
76
326
206
—
158
362
—
—
—
40
4,601
—
856
323
208
3,697
1,396
34
867
4,291
20
—
8
69
314
—
80
88
68
257
223
27
90
311
14
—
8
23
4,254
—
899
287
245
3,528
1,419
18
941
4,091
25
—
14
108
327
—
92
73
82
274
234
17
119
336
25
—
15
35
56,171 3,950
8
8
6,697
652
997
307
1,270
306
22,929 1,529
12,011 1,980
338
271
10,199
927
28,719 2,407
9
9
—
—
153
156
840
187
100,234
72
14,866
4,675
4,181
54,217
23,081
633
16,187
66,254
341
—
189
1,526
5,005
57
1,027
785
651
2,489
2,950
361
1,152
3,745
130
—
192
274
15,843
739
16,370
596
15,829
635
140,342
5,881
286,456
7,970
—
49
337
629
59
—
22
48
114
45
—
46
211
550
11
—
28
22
74
8
—
99
187
400
7
—
68
21
70
6
—
87
808
1,653
42
—
42
101
393
23
—
659
4,267
11,962
825
—
359
232
1,003
205
1,075
134
818
82
692
100
2,591
408
17,714
1,115
16,917
758
17,188
606
16,521
644
142,932 5,936
304,169
8,241
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 board feet were estimated.
a Sawtimber trees have merchantability limits that differ for softwood and hardwood species as follows: ≥9 inches diameter at breast height for
softwoods and ≥11 inches diameter at breast height for hardwoods.
142
California’s Forest Resources, 2001–2005
Table 18—Estimated net volume (cubic feet) of sawtimber treesa on timberland, by species group and
ownership group, California, 2001–2005
Forest Service Species group Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Total Hardwoods:
Cottonwood and aspen Oak Other western hardwoods Red alder Total All species groups Total
SE
Other
federal Total SE
State and local
government Total SE
Corporate
private
Total
Noncorporate
private
All owners
SE
Total
SE
Total
SE
788
10
202
147
119
426
514
62
185
645
26
35
50
Million cubic feet
10,275
1
1,995
674
487
6,701
23
—
2,052
9,930
1
34
250
600
1
158
120
101
337
23
—
164
596
1
35
48
457 154
— —
27 24
— —
30 13
94 36
— —
— —
9
6
10
6
— —
— —
— —
242
—
—
24
46
41
376
—
6
89
2
—
7
131
—
—
23
29
21
164
—
6
75
2
—
6
2,844 287
11 10
584 81
128 65
46 18
1,477 176
1,735 289
64 47
493 71
1,659 219
44 22
— —
20 11
3,230
—
455
83
245
1,521
2,067
43
158
484
22
—
10
405
—
97
53
50
200
417
40
52
92
14
—
7
17,048
13
3,060
908
854
9,834
4,201
106
2,717
12,172
69
34
286
32,424
965
627 166
832
272
9,104 605
8,316
711
51,303 1,313
16
450
602
22
8
34
78
8
—
12
40
—
7
6
195 28
652 104
117 36
93
485
1,112
12
62
44
149
7
1,091
88
33,514
983
4
44
40
—
4
12
24
—
—
30
93
—
88
30
123
42
715 183
955
296
116
1,702
172
10,075 635
970
10,018
783
120
1,203
2,499
152
63
63
196
38
3,973
220
55,277 1,366
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 500,000 cubic feet were estimated.
a Sawtimber trees have merchantability limits that differ for softwood and hardwood species as follows: ≥9 inches diameter at breast height for
softwoods and ≥11 inches diameter at breast height for hardwoods.
143
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 19—Estimated above-ground biomass of all live trees on forest land, by owner class and forest land
status, California, 2001–2005
Unreserved forests
Timberlanda
Owner class
USDA Forest Service:
National forest
Total SE
Reserved forests
Other
forestb
Total
Productive a
Total SE
Total SE
Total SE
Other
forest b
Total
Total SE
All forest
land
Total SE
Total SE
1,124.7 21.9
Million bone-dry tons
811.2 21.5
47.8 4.4
859.0 21.4
243.1 16.2
22.2 3.0
265.7 16.3
— — 107.1 15.3
34.2 6.0
2.7 1.7
— —
0.3 0.3
2.1 1.0 — — 7.8 2.2
2.2 0.7
0.0 0.0
— —
114.9 15.2
4.8 1.9
0.3 0.3
— —
Other federal government:
National Park Service —
Bureau of Land Management 24.5
U.S. Fish and Wildlife Service —
Departments of Defense
0.4
and Energy
—
5.8
—
0.4
— —
9.8 1.7
— —
1.7 0.9
Other federal
1.1
1.2
0.1
0.1
1.3 1.2
7.1 4.1
2.0 1.3
9.1 4.3
10.4 4.5
26.0
6.0
11.5
1.9
37.6 6.2
117.2 15.7
11.9 2.6
129.1 15.6
166.7 16.5
21.3
8.9
7.1
4.7
2.6 1.5
4.6 1.5
23.9 7.2
13.5 5.0
68.6 23.5
4.3 2.9
5.5 1.8
2.8 1.8
74.1 23.5
7.1 3.4
98.0 24.4
20.6 6.0
—
—
—
—
— — 0.1 0.1
0.1 0.1
30.2
8.5
7.2 2.1
37.5 8.7
72.9 23.6
8.4 2.5
81.3 23.7
118.8 25.1
313.9 18.0
10.6 2.3
324.5 18.1 — —
—
—
— —
324.5 18.1
Total
State and local government:
State
Local
Other public Total
Corporate private:
Noncorporate private:
Nongovernmental
conservation or natural
resource organization
Unincorporated partnerships,
associations, or clubs
Native American
—
—
18.5
5.0
1.7
1.1
20.1 5.1 — —
— —
— —
4.3
2.7
0.9 0.6
5.2 2.8 — —
—
— —
17.2
6.2
0.1
20.1
15.2
6.3
0.3
1.0
0.1
5.1
5.2 2.8
18.6 6.3 — —
—
—
— —
18.6 6.3
Individual
308.8 20.5
96.8
7.0
406.1 21.1 — —
—
—
— —
406.1 21.1
Total
348.7 21.8
100.8
7.2
450.1 22.4 — —
—
—
— —
450.1 22.4
1,530.0 33.2
178.0
9.0 1,708.5 33.2
433.1 32.3
42.6 4.6
476.1 32.3
2,184.7 42.5
All owners
1.4 0.9
—
114.9
39.0
0.3
2.1
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 50,000 bone-dry tons were estimated;
includes all live trees ≥1 inch diameter at breast height.
a Forest land that is capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
b Forest land that is not capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
144
California’s Forest Resources, 2001–2005
Table 20—Estimated aboveground biomass of all live trees on forest land, by diameter class and species
group, California, 2001–2005
Species group 1.0–2.9 Total SE
3.0–4.9 Total SE
5.0–6.9 Total SE
Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Western woodland softwoods Total Diameter class (inches)
7.0–8.9 9.0–10.9 Total SE
Total SE
11.0–12.9 Total SE
13.0–14.9 Total SE
15.0–16.9
Total SE
Million bone-dry tons
2.84
0.05
1.15
1.44
1.44
0.92
2.59
0.02
0.18
8.32
0.07
—
0.33
0.83
20.19
0.23
0.03
0.12
0.28
0.25
0.1
0.47
0.01
0.03
0.69
0.03
—
0.08
0.17
0.98
5.5
—
1.61
1.3
1.32
2.12
2.33
0.06
0.25
6.9
0.2
—
0.2
1.06
22.86
0.48
—
0.18
0.27
0.26
0.21
0.61
0.06
0.07
0.59
0.11
—
0.07
0.24
1.11
10.69
0.02
2.55
1.65
2.06
4.92
3.75
0.05
0.44
9.82
0.2
—
0.24
0.98
37.38
0.56
0.01
0.18
0.24
0.17
0.29
0.48
0.03
0.05
0.49
0.11
—
0.04
0.12
1.03
14.26
0.01
3
1.76
2.88
7.48
4.76
0.04
0.73
13.43
0.18
0.02
0.29
1.01
49.84
0.74
0.01
0.22
0.23
0.23
0.45
0.62
0.02
0.07
0.65
0.05
0.02
0.04
0.12
1.32
17.74
0.01
3.38
2.65
3.29
10.53
5.44
0.07
0.94
16.26
0.3
0.01
0.34
1.46
62.42
0.97
0.01
0.28
0.38
0.26
0.64
0.65
0.07
0.12
0.83
0.13
0.01
0.06
0.19
1.69
18.76
0.02
3.48
3.01
3.82
11.65
7.68
0.08
1.18
19.13
0.25
—
0.34
1.66
71.07
1.11
0.02
0.28
0.39
0.32
0.71
0.99
0.08
0.15
1.02
0.1
—
0.07
0.24
2.06
20.57
—
3.85
4.09
3.92
13.66
8.33
0.11
1.01
22.32
0.27
0.05
0.47
2.02
80.67
1.18
—
0.41
0.55
0.37
0.83
1.26
0.1
0.16
1.18
0.16
0.05
0.1
0.34
2.42
23.44
0.04
4.13
3.9
4.11
14.97
7.75
0.2
2.05
23.12
0.37
—
0.52
2.1
86.68
1.52
0.04
0.43
0.56
0.41
1.05
1.1
0.2
0.3
1.38
0.16
—
0.13
0.39
2.66
Hardwoods:
Cottonwood and aspen 0.33
Oaks
5.7
Other western hardwoods 4.56
Red alder 0.05
Western woodland hardwoods 0.09
Total 10.72
0.11
0.48
0.35
0.02
0.02
0.61
0.13
15.8
9.69
0.14
0.12
25.88
0.06
1.25
0.91
0.07
0.04
1.56
0.06
32.51
17.75
0.61
0.27
51.21
0.02
1.5
1.02
0.15
0.04
1.77
0.09
42.57
20.75
0.98
0.4
64.79
0.03
1.84
1.23
0.23
0.07
2.15
0.14
43.26
21.96
1.89
0.44
67.69
0.05
1.89
1.44
0.5
0.07
2.38
0.17
38.94
23.08
1.88
0.42
64.49
0.08
1.89
1.65
0.58
0.07
2.56
0.21
37.07
20.13
1.03
0.44
58.88
0.09
1.96
1.62
0.39
0.08
2.58
0.39
31.58
17.7
0.6
0.31
50.58
0.18
1.85
1.65
0.19
0.07
2.54
3.6
All species groups 30.92 1.15
48.73 1.93
88.59 2.04 114.63 2.49 130.11 2.85 135.56 3.27 139.55 3.52 137.26
Species group 17.0-18.9 Total SE
19.0-20.9 Total SE
21.0-24.9 Total SE
Softwoods:
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True fir Western hemlock Western redcedar Western white pine Western woodland softwoods Total Diameter class (inches)
25.0-28.9 29.0-32.9 Total SE
Total SE
33.0-36.9 Total SE
37.0+ Total SE
Million bone-dry tons
21.01
—
4.32
5.3
4.72
14.76
8.51
0.32
2.12
25.28
0.34
—
0.54
1.4
88.61
1.42
—
0.48
0.75
0.6
1.08
1.65
0.31
0.34
1.61
0.17
—
0.16
0.18
3.12
17.4
0.05
3.85
4.78
5.21
15.75
9.73
—
3.46
23.64
0.41
—
0.39
1.13
85.81
1.41 36.15
0.05
0.24
0.5
7.37
0.8
9.15
0.66
8.03
1.24
24.6
1.85 16.72
—
0.1
0.55
7.04
1.59 46.55
0.34
0.01
—
—
0.13
1.09
0.19
1.29
3.31 158.36
2.72 32.88
0.15
0.12
0.93
6.84
1.25
6.98
1.1
5.42
1.78 23.91
2.43 15.21
0.11
0.13
0.78
6.77
2.89 44.71
0.01
0.16
—
0.06
0.27
1.27
0.22
0.79
5.35 145.23
1.83
32.5
0.06
0.1
0.52
5.26
0.83
5.37
0.64
4.77
1.34 21.71
2.11 12.23
0.11
0.2
0.55
7.54
2.53 40.14
0.08
0.06
0.07
0.14
0.2
1.43
0.12
0.35
4.17 131.81
1.96 32.08
0.05
0.02
0.46
5.75
0.73
3.02
0.62
4.01
1.47 17.84
1.84 11.34
0.11
0.06
0.8
6.95
2.45 34.35
0.04
0.08
0.12
0.25
0.23
1.38
0.07
0.31
4.19 117.44
2.12
0.03
0.63
0.56
0.67
1.35
1.78
0.06
0.71
2.42
0.06
0.21
0.25
0.07
4.25
Hardwoods:
Cottonwood and aspen 0.22
Oak 27.54
Other western hardwoods 16.14
Red alder 0.51
Western woodland hardwoods 0.25
Total 44.65
0.13
1.84
1.71
0.18
0.05
2.55
0.73
20.53
10.96
0.2
0.2
32.62
0.36
1.68
1.28
0.14
0.07
2.2
0.3
2.53
2.22
0.2
0.08
3.43
0.3
1.2
0.95
0.04
0.04
1.59
0.13
1.11
0.68
0.09
0.04
1.31
0.02 0.12 0.09
0.79 11.64 1.74
0.69 4.93 1.14
0.07
— —
0.02 0.03 0.02
1.07 16.72 2.07
All species groups All classes
Total SE
0.78
31.74
20.46
0.3
0.3
53.58
0.57
18.32
9.16
0.07
0.11
28.22
0.3
12.71
5.39
0.17
0.05
18.62
0.02
6.75
3.76
0.07
0.02
10.62
142.1 10.2 427.91 16.69
— —
0.68 0.26
16.7 1.75
73.24 4.12
3.22 0.58
57.63 5.38
7.71 1.29
62.71 4.41
39.28 2.97
224.1 8.27
72.56 22.37 188.94 26.96
0.81 0.6
2.25 1.07
33.76 3.39
74.45 4.67
103.77 8.42 437.73 18.74
0.23 0.23
3.11 1.08
0.4 0.31
0.93 0.69
6.1 0.96
14.93 1.57
0.36 0.09
16.76 1.51
427 27.52 1,585.38 38.71
4.26 1.31
376.66 11.97
206.42 11.37
8.5 1.85
3.45 0.47
599.29 16.62
133.25 3.99 118.44 3.96 211.95 6.33 173.46 4.48 150.43 4.39 128.07 4.43 443.72 27.63 2,184.67 42.46
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 5,000 bone-dry tons were estimated;
includes all live trees ≥1 inch diameter at breast height.
145
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 21—Estimated biomass of live trees on forest land by softwood species group, for merchantable tree
boles, tops, limbs, stumps, and small trees, California, 2001–2005
Trees ≥ 8 in d.b.h.
Merchantable
tree boles
Tops, limbs, and stumps
Softwood species group Total
SE
Total
Douglas-fir Engelmann and other spruces Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sitka spruce Sugar pine True firs
Western hemlock Western redcedar Western white pine Western woodland softwoods 308.2
0.5
43.7
42.1
38.6
152.1
75.7
1.5
40.1
224.3
2.1
0.6
10.4
9.0
12.7
0.2
2.6
4.1
3.0
5.8
13.7
0.8
2.5
10.2
0.8
0.4
1.1
0.9
94.0
0.1
22.8
10.4
17.9
60.7
102.4
0.6
33.1
182.0
0.4
0.4
3.7
4.4
948.8
22.9
532.9
Total Trees < 8 in d.b.h.
SE
Whole tree
Total
Total aboveground biomass
SE
Total
SE
Million dry tons
3.6
25.7
0.1
0.1
1.4
6.7
1.0
5.2
1.4
6.1
2.3
11.4
13.2
10.9
0.3
0.1
2.2
1.3
8.0
31.4
0.1
0.6
0.3
0.0
0.4
0.9
0.4
3.3
1.3
0.0
0.5
0.8
0.6
0.7
1.6
0.1
0.1
1.7
0.2
0.0
0.2
0.4
427.9
0.7
73.2
57.6
62.7
224.1
188.9
2.3
74.4
437.7
3.1
0.9
14.9
16.8
16.7
0.3
4.1
5.4
4.4
8.3
27.0
1.1
4.7
18.7
1.1
0.7
1.6
1.5
16.2
3.0
1,585.4
38.7
103.7
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 50,000 bone-dry tons were estimated;
includes all live trees ≥1 inch diameter at breast height; the merchantable bole is from a 1-foot stump to a 4-inch top.
146
California’s Forest Resources, 2001–2005
Table 22—Estimated mass of carbon of all live trees, by owner class and forest land status, California,
2001–2005
Unreserved forests
Timberlanda
Owner class
USDA Forest Service:
National forest Total SE
Reserved forests
Other
forestb
Total
Productive a
Total SE
Total SE
Total SE
Other
forest b
Total
Total SE
All forest
land
Total SE
Total SE
137.5 8.4
580.5 11.3
Million bone-dry tons
418.9 11.1
Other federal:
National Park Service — —
Bureau of Land Management 12.4 3.0
U.S. Fish and Wildlife Service — —
Departments of Defense 0.2 0.2
and Energy
Other federal 0.6 0.6
24.2 2.2
443.1 11.1
— —
5.0 0.8
— —
0.8 0.5
— —
17.4 3.0
— —
1.0 0.5
55.5
1.3
0.2
—
7.9
0.9
0.2
—
11.3 1.5
4.0 1.1
1.1 0.4
— —
— —
59.5
2.5
0.2
—
7.9
0.9
0.2
—
59.5 7.9
19.8 3.2
0.2 0.2
1.0 0.5
0.6 0.6
3.7 2.1
1.0 0.7
4.7 2.2
5.3 2.3
13.2 3.0
5.8
1.0
19.0 3.1
60.6 8.1
6.2 1.3
66.8 8.1
85.8 8.5
State and local government:
State Local Other public 10.9 3.6
4.6 2.4
— —
1.3 0.8
2.3 0.7
— —
12.2 3.7
6.8 2.5
— —
35.3 12.2
2.2 1.5
— —
2.7 0.9
1.4 0.9
0.1 0.1
38.0 12.2
3.6 1.7
0.1 0.1
50.2 12.7
10.4 3.0
0.1 0.1
15.5 4.4
3.6
1.0
19.0 4.5
37.4 12.3
4.2 1.2
41.6 12.3
60.7 13.0
161.0 9.2
5.3
1.1
166.2 9.3
— —
—
—
— —
166.2 9.3
2.6
0.8 0.5
10.3 2.6
— —
—
—
— —
10.3 2.6
1.4
0.5 0.3
2.6 1.4
— —
—
—
— —
2.6 1.4
3.2
10.5
0.7 0.5
47.8 3.5
9.4 3.2
204.7 10.8
— —
— —
—
—
—
—
— —
— —
9.4 3.2
204.7 10.8
177.0 11.1
49.7 3.5
227.0 11.4
— —
—
—
— —
227.0 11.4
785.5 17.1
88.6 4.4
874.4 17.1
224.0 16.7
21.7 2.4
245.9 16.7
1,120.2 21.9
Total
Total
Corporate private:
Noncorporate private:
“Nongovernmental 9.4
conservation or natural
resource organization”
“Unincorporated partnerships,
2.2
associations, or clubs”
Native American 8.7
Individual 156.7
Total
All owners
0.1 0.0
126.0 8.4
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 50,000 bone-dry tons were estimated;
includes all live trees ≥1 inch diameter at breast height.
a Forest land that is capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
b Forest land that is not capable of producing in excess of 20 cubic feet/acre/year of wood at culmination of mean annual increment.
147
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 23—Estimated biomass and carbon mass of live trees, snags, and down wood on forest land, by forest
type group, California, 2001–2005
Biomass
Live trees
Snags
Down wooda
(≥1 in d.b.h.) (≥5 in d.b.h.) (≥3 in l.e.d.)
Forest type group Total
Softwoods:
California mixed conifer Douglas-fir Fir/spruce/mountain hemlock Lodgepole pine Other western softwoods Pinyon/juniper Ponderosa pine Redwood Western hemlock/Sitka spruceb
Western white pine SE
Total SE
23.3
15.3
18.2
6.8
3.1
1.9
6.9
30.1
2.5
1.8
72.1
10.0
34.7
6.4
2.4
1.7
3.5
11.1
1.5
0.9
3.9
1.6
3.6
1.1
0.4
0.4
0.5
2.8
1.4
0.3
1,479.4
41.2
144.2
6.1
Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood Exotic hardwoodsb
Other hardwoods Tanoak/laurel Western oak Woodland hardwoods 20.9 5.0
1.7
0.7
2.7 1.6
0.4 0.3
27.8 5.5
230.9 18.8
414.1 16.3
5.6 1.0
2.7
0.6
—
—
1.9
10.5
20.8
0.7
0.9
0.5
—
—
0.6
1.4
1.7
0.2
704.0 24.5
Total
Total
Nonstocked All forest types TOTAL
Total
SE
Total SE
Total SE
TOTAL
Million bone-dry tons
724.1
140.0
240.7
61.2
31.7
18.7
92.1
160.9
3.5
6.6
Total SE
Carbon
Live trees
Snags
Down wooda
(≥1 in d.b.h.) (≥5 in d.b.h.) (≥3 in l.e.d.)
82.8
14.2
22.8
8.9
4.9
2.2
9.3
16.5
0.3
0.8
3.9
2.4
2.1
1.3
0.7
0.3
0.9
4.2
0.3
0.3
879.0
164.2
298.2
76.4
39.0
22.6
104.8
188.5
5.3
8.3
162.7 6.3
1,786.3
12.1
7.9
9.5
3.5
1.6
1.0
3.6
15.7
1.3
0.9
37.4
5.2
18.1
3.3
1.3
0.9
1.8
5.8
0.8
0.5
2.0
0.8
1.9
0.6
0.2
0.2
0.3
1.4
0.7
0.2
42.8
7.3
11.8
4.7
2.5
1.2
4.8
8.5
0.2
0.4
2.0
1.2
1.1
0.7
0.4
0.2
0.5
2.2
0.1
0.1
455.8
84.7
155.3
39.9
20.2
11.8
54.4
97.8
2.8
4.3
767.8 21.4
74.9 3.2
84.2 3.3
927.0
1.4
0.3
—
—
1.0
5.3
10.5
0.3
2.6
0.1
—
—
1.1
13.2
13.8
0.5
0.8
0.1
—
—
0.3
1.5
1.1
0.1
14.6
1.3
1.3
0.2
16.0
134.7
230.2
3.7
18.9 1.3
31.3 2.0
401.9
0.1
3.3 1.0
1.1 0.2
5.1
1,120.2 21.9
97.1 3.4
1.5
0.1
—
—
0.5
2.8
2.1
0.3
28.5
2.5
2.7
0.4
31.9
267.0
462.0
7.4
10.6
0.8
1.3
0.2
13.9
116.2
205.9
2.8
37.3 2.5
61.1 3.8
802.4
351.7 12.3
0.3
6.3 2.0
2.0 0.4
9.6
2,184.7 42.5
187.8 6.6
225.8 7.0
2,598.3
1.3
4.9
0.2
—
—
2.2
25.6
27.1
1.1
375.6
72.3
125.4
31.9
16.5
9.7
47.8
83.5
1.8
3.4
0.7
2.5
0.4
0.8
0.2
2.8
9.5
8.1
0.5
0.5
0.3
—
—
0.3
0.7
0.9
0.1
116.6 3.6 1,333.9
Note: Totals may be off because of rounding; data subject to sampling error; SE = standard error; — = less than 50,000 bone-dry tons were estimated;
d.b.h. = diameter at breast height; l.e.d. = large-end diameter of the log.
a Down wood in this table includes coarse woody material (CWM) only; an additional 123 million tons of biomass and 62 million tons of carbon were
estimated for fine woody material (FWM).
b These forest type groups are represented by <5 plots.
148
California’s Forest Resources, 2001–2005
Table 24—Estimated average biomass and carbon mass of live trees, snags, and down wood on forest land,
by forest type group, California, 2001–2005
Biomass
Live trees
Snags
Down wooda
(≥1 in d.b.h.) (≥5 in d.b.h.) (≥3 in l.e.d.)
Forest type group Mean
Softwoods:
California mixed conifer
91.9
Douglas-fir
130.9
Fir/spruce/mountain hemlock
116.4
Lodgepole pine
60.5
Other western softwoods
15.7
Pinyon/juniper
9.9
Ponderosa pine
39.9
Redwood
250.3
Western hemlock/Sitka spruceb 198.4
Western white pine
33.8
Total
Hardwoods:
Alder/maple
Aspen/birch
Elm/ash/cottonwood
Exotic hardwoodsb
Other hardwoods Tanoak/laurel
Western oak
Woodland hardwoods
Total
Nonstocked
All forest types
77.4
SE
Mean SE
Mean SE
Carbon
Live trees
Snags
Down wooda
(≥1 in d.b.h.) (≥5 in d.b.h.) (≥3 in l.e.d.)
TOTAL
Mean SE Mean SE
Mean SE
TOTAL
Bone-dry tons per acre
2.0
8.6
5.2
4.0
1.1
0.7
1.9
33.1
25.7
6.5
1.9
78.1 10.6
20.7 6.8
55.8 16.1
82.0 19.1
45.6 6.8
109.3 5.4
42.4 1.2
11.4 1.2
9.2
9.3
16.8
6.3
1.2
0.9
1.5
17.3
87.5
4.9
0.5
1.3
1.4
0.9
0.2
0.2
0.2
3.7
17.1
1.4
7.5 0.3
10.1
7.5
1.0
—
3.1
5.0
2.1
1.4
2.8
6.0
0.7
—
0.8
0.6
0.2
0.3
10.5
13.2
11.0
8.8
2.4
1.2
4.0
25.7
16.5
4.2
0.4
1.7
0.8
1.0
0.3
0.2
0.3
5.4
4.2
1.1
111.6
153.4
144.2
75.6
19.3
12.0
45.4
293.3
302.4
42.9
47.7
67.6
60.6
31.5
8.2
5.1
20.7
129.9
102.7
17.6
1.0
4.5
2.7
2.1
0.6
0.4
1.0
17.2
13.5
3.4
8.5 0.3
93.4
40.2
1.0
4.2
1.4
0.4
0.1
0.7
1.1
0.2
0.4
106.6
30.5
57.9
84.7
52.2
126.5
47.3
14.9
39.6
10.4
27.4
40.3
22.8
55.0
21.1
5.8
26.3
18.4
2.3
1.1
2.7
3.5
12.2
2.8
2.1
4.7
4.8
8.7
3.3
0.6
0.5
0.8
9.0
45.5
2.5
0.2
0.7
0.7
0.5
0.1
0.1
0.1
1.9
8.9
0.7
0.2
0.9
0.4
0.5
0.2
0.1
0.2
2.8
2.2
0.5
57.8
79.2
75.0
39.4
10.1
6.2
23.6
152.2
156.8
22.3
3.9 0.2
4.4 0.2
48.5
5.4
3.4
7.9
9.4
3.4
2.7
0.6
0.6
5.2
3.9
0.5
—
1.6
2.5
1.1
0.7
9.5
1.1
0.5
1.3
1.8
6.2
1.4
1.1
2.2
0.7
0.2
0.1
0.3
0.5
0.1
0.2
54.3
15.4
28.4
41.6
26.2
63.7
23.6
7.6
0.7
1.4 0.1
2.3 0.1
30.0
1.5
3.1
0.3
—
0.4
0.3
0.1
0.2
5.4
6.8
5.7
4.6
1.3
0.6
2.1
13.3
8.6
2.2
52.6
1.5
2.8 0.2
4.6 0.3
60.0
1.8
0.3
8.3 2.5
2.6 0.5
12.7
0.9 0.2
4.3 1.3
1.4 0.3
6.6
65.7
1.2
5.6 0.2
6.8 0.2
78.1
33.7 0.6
2.9 0.1
3.5 0.1
40.1
Note: Means are calculated using a ratio of means formula across plots within forest type groups; data subject to sampling error; SE = standard error;
— = less than 0.05 bone-dry tons per acre were estimated; d.b.h. = diameter at breast height; l.e.d. = large-end diameter of the log.
a Down wood in this table includes coarse woody material only.
b
These forest type groups are represented by <5 plots.
149
150
1.7 0.2
3.8 0.1
Nonstocked All forest types 0.6
0.4
0.4
0.5
0.3
0.1
0.3
3.0 0.1
2.1 0.4
2.3 0.1
4.2 1.1 1.1 2.5 4.9 1.7 1.5 3.5 0.1
3.8
1.1
–– 0.4
1.0
0.2
0.2
3.8 0.2
0.5 0.2
2.3 0.2
14.2 1.2 –– 1.1 7.3 1.1 0.6 5.0 0.3
4.2
1.4
0.5
1.3
1.3
0.3
0.7
10.6 0.3
4.3 0.7
8.3 0.3
24.9 4.7 5.6 8.5 18.3 5.9 5.2 12.5 0.4
7.8
74.8
45.9
32.9
71.6
26.3
6.0
26.2
276.5 6.6
133.7 16.1
220.2 509.8 196.1 330.1 314.4 395.3 169.3 197.6 9.0
82.1
58.7
53.7
36.7
32.0
8.2
29.9
347.0 8.1
247.2 52.4
235.2 569.6 153.5 156.6 188.5 531.1 167.9 134.2 429.3 12.3
495.2 23.5
62.1 19.8
273.7 28.1
1,865.5 514.7
197.5 190.3
–– –– 128.7 40.8
840.1 102.8
128.9 24.3
74.0 31.0
667.3 35.5
1,118.7 443.0 729.1 2,944.9 547.1 486.7 631.6 1,766.5 466.1 405.8 1,423.2 32.6
72.7
35.1
573.8
236.3
81.4
112.7
124.2
28.7
53.4
50.6
3.7
23.6
32.0
27.9
23.2
12.2
3.5
18.3
4.1
143.0 2.8
76.4 13.7
107.2 183.2 106.4 78.9 95.8 202.4 83.9 89.3 170.8 0.5
2.8
1.1
1.2
0.6
0.2
0.6
4.3
9.7
2.7
5.5
1.5
–– 1.1
1.4
0.2
1.0
6.4 0.2
1.1 0.4
3.8 0.3
23.7 1.5 –– 2.6 12.2 1.6 1.7 8.5 0.4
9.5 16.5 11.5 9.1 3.0 0.7 4.4 27.1 36.8 5.8 7.2
14.7
12.7
12.6
5.0
6.4
7.6
35.6
27.6
17.7
27.0
32.7
27.9
23.4
12.5
3.6
18.2
149.4 2.9
77.5 13.8
111.0 3.8
206.9 107.9 78.9 98.4 214.6 85.5 91.0 179.3 4.2
235.0 208.3 236.1 118.9 52.1 55.7 126.2 334.2 263.6 102.4 Note: Means are calculated using a ratio of means formula across plots within forest type groups; data subject to sampling error; SE = standard error; –– = less than 0.05 bone-dry tons per acre, 0.05 cubic feet per
acre, and 0.05 logs per acre were estimated; CWM = coarse woody material; FWM = fine woody material.
a The diameter at the large end is used to classify CWM with decay classes of 1–4; diameter at the point of intersection with the transect is used for heavily decomposed CWM (decay class 5) and for all FWM.
b An estimate of pieces per acre is not possible for FWM.
3.7 0.1
Total
1.0
0.6
0.8
1.0
0.4
0.1
0.5
6.5 2.4 4.5 4.9 6.1 3.1 3.1 Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood Other hardwoods Tanoak/laurel Western oak Woodland hardwoods 4.0 0.1
7.0
13.9
12.5
12.1
4.8
6.3
7.4
35.3
25.3
17.0
326.6 10.1
Total
81.4
265.9
115.2
142.4
56.7
21.1
94.5
703.5
498.4
117.8
1,726.9 2,168.3 1,907.5 1,311.1 385.7 231.2 701.5 3,482.8 2,458.9 514.4 225.5 191.8 224.6 109.8 49.1 55.0 121.8 307.1 226.8 96.6 548.4 21.8
786.6 41.0
526.1 41.6 1,164.2 229.0
600.8 34.8
872.3 91.0
420.3 57.3
740.3 90.6
123.4 14.5
179.0 35.1
101.1 12.4
28.7 8.6
236.9 15.3
286.4 33.1
952.9 93.6 2,466.9 696.3
706.7 158.6 1,746.9 458.9
199.0 51.2
307.1 100.5
391.9 19.5
478.0 56.0
434.4 22.6
150.5 16.8
83.3 7.8
101.4 8.7
178.2 12.0
63.0 87.1
5.3 147.4
8.3 19.8
Total Mean
SE
Densityb
Diameter class (inches)
CWM
3 to 19 in
≥20 in
Total
Mean SE
Mean SE
Mean SE
- - - - - - - - - - - - Logs per acre - - - - - - - - - - -
FWM
< 3 in
Mean SE
Volume
Diameter class (inches) a
CWM
3 to 19 in
≥20 in
Mean SE
Mean SE
- - - - - - - - - - - - - - - Cubic feet per acre - - - - - - - - - - - - - - - - - -
FWM
< 3 in
Mean SE
Biomass
Diameter class (inches) a
CWM
3 to 19 in
≥20 in
Total Mean SE
Mean SE
Mean SE
- - - - - - - - - - - Bone-dry tons per acre - - - - - - - - - - -
Softwoods:
California mixed conifer 4.9 0.3
4.6 0.2
5.9 0.3
15.4 0.8
Douglas-fir 6.6 0.7
4.4 0.4
8.8 1.6
19.8 2.0
Fir/spruce/mountain hemlock 5.0 0.3
4.7 0.3
6.3 0.7
16.0 0.9
Lodgepole pine 1.8 0.2
3.3 0.5
5.5 0.7
10.6 1.1
Other western softwoods 1.2 0.1
1.1 0.1
1.3 0.2
3.6 0.4
Pinyon/juniper 1.3 0.1
0.9 0.1
0.3 0.1
2.5 0.2
Ponderosa pine 2.1 0.1
2.0 0.1
2.0 0.2
6.1 0.8
Redwood 6.2 1.0
7.8 0.8
18.0 5.2
32.0 5.3
Western hemlock/Sitka spruce 5.2 1.7
4.5 1.0
12.0 3.1
21.7 3.0
Western white pine 1.3 0.2
1.6 0.4
2.7 0.9
5.6 1.0
Forest type group Table 25—Estimated average biomass, volume, and density of down wood on forest land, by forest type group and diameter class, California, 2001–2005
GENERAL TECHNICAL REPORT PNW-GTR-763
Biomass Carbon
115.2
59.6
0.9
10.3
0.5
0.1
0.5
3.1
5.7
0.4
48.4
19.6
0.2
2.3
0.1
—
—
0.6
1.5
0.1
17.1
10.2
0.1
1.2
0.1
—
—
0.3
0.8
—
8.9
5.4
—
1.7
0.2
—
—
0.8
0.8
—
3.7
2.6
—
0.9
0.1
—
—
0.4
0.4
—
1.7
50.6
0.1
17
3.2
—
0.4
8.9
4.5
—
33.5
26.3
0.1
8.7
1.6
—
0.2
4.6
2.3
—
Note: Totals may be off because of rounding; data subject to sampling error; — = less than 50,000 bone-dry tons were estimated.
a In this table, down wood includes logs ≥3 inches diameter at the large end (coarse woody material). An additional 123 million tons of biomass
and 62 million tons of carbon were estimated for fine woody material in the state.
All forest types Nonstocked 1.7
20
Total
0.9
0.2
0.9
6
11.2
0.8
93.5
Hardwoods:
Alder/maple Aspen/birch Other hardwoods Tanoak/laurel Western oak Woodland hardwoods Total
17.5
Biomass Carbon
Corporate
private
Biomass Carbon
State and
local goverments
8
3.1
1.6
0.1
0.1
—
0.8
3.6
0.2
—
Biomass Carbon
USDA
Forest Service Other federal Million bone-dry tons
Softwoods:
California mixed conifer 55.8
28.9
5.1
2.6
0.8
0.4
15.4
Douglas-fir 4.5
2.3
0.7
0.4
0.5
0.2
6
Fir/spruce/mountain hemlock 15.5
8
2.9
1.5
0.5
0.2
3
Lodgepole pine 5.2
2.7
3
1.6
0.1
0
0.1
Other western softwoods 3.3
1.7
0.7
0.4
—
—
0.2
Pinyon/juniper 1.5
0.8
0.6
0.3
—
—
—
Ponderosa pine 6.4
3.3
0.2
0.1
—
—
1.5
Redwood 0.5
0.3
3.9
2
1.8
0.9
7
Western hemlock/Sitka spruce —
—
—
—
—
—
0.3
Western white pine 0.8
0.4
—
—
—
—
—
Forest type group 35.1
—
20.1
0.6
—
0.9
9.3
9.1
0.2
15
5.7
2.5
0.9
0.5
0.7
0.1
1.2
3.4
—
—
17.9
—
10.2
0.3
—
0.4
4.8
4.6
0.1
7.7
2.9
1.3
0.5
0.3
0.3
0.1
0.6
1.7
—
—
Biomass Carbon
Noncorporate
private
225.8
2
61.1
4.9
0.2
2.2
25.6
27.1
1.1
162.7
82.8
14.2
22.8
8.9
4.9
2.2
9.3
16.5
0.3
0.8
116.6
1.1
31.3
2.6
0.1
1.1
13.2
13.8
0.5
84.2
42.8
7.3
11.8
4.7
2.5
1.2
4.8
8.5
0.2
0.4
Biomass Carbon
All owners
Table 26—Estimated biomass and carbon mass of down wooda on forest land, by forest type group and owner group, California,
2001–2005
California’s Forest Resources, 2001–2005
151
152
1.8 0.1
All forest types 0.4
2.3
0.1
0.2
0.3
0.1
0.2
2.1 0.1
3.6 1.4
0.8 0.1
1.2 2.8 0.1 0.3 1.3 0.7 0.4 2.7
1.4
—
0.3
0.3
0.1
0.1
1.7 0.1
1.2 0.6
0.6 0.1
6.7 1.4 —
0.5 1.9 0.2 0.1 2.5 0.2
0.5 1.3 1.4 0.9 0.2 0.2 0.2 3.7 17.1 1.4 2.8 6.0 0.7 0.8 0.6 0.2 0.3 5.7 0.2 8.3 2.5 2.8 0.2 10.1
7.5
1.0
3.1
5.0
2.1
1.4
7.6 0.3 9.2
9.3
16.8
6.3
1.2
0.9
1.5
17.3
87.5
4.9
3.9
3.6
72.2 2.8
148.9 42.1
48.3 104.4 28.4
144.9 104.3
30.0 18.2
85.2 26.4
61.0 10.7
41.4 3.7
40.7 9.5
85.9 7
11.8
17.8
18.6
6.8
6.4
5.8
12.7
38.2
20.8
6.1
3.2
89.1 4
175.2 70
34.4 42.1 18
127.1 99.1
2.5 2.6
11.7 6
46.4 10.7
33.1 3.5
19.8 7.8
124.0 160.5 10.2
110.0 21
259.1 27.5
173.3 28.7
29.9 5.8
11.1 2.5
38.1 7.2
116.5 58.6
349.0 386.8
127.8 52.4
3.2
73.8
69.3
—
14.8
12.4
2.4
2.7
5.9
58.4 3.7
68.3 35.2
21.9 160.0 73.3 —
25.8 60.2 10.2 2.7 83.7 117.3 10.8
126.3 28.9
153.4 24.7
54.5 20.4
7.3 3
0.2 0.2
8.4 3.4
166.6 44.3
975.9 249.3
39.7 17.9
6.8
83.1
271.5
19.2
33.8
21.1
7
13.9
219.7 7.5
392.3 122
104.6 306.4 345.2 32.4 122.7 167.7 84.8 63.2 293.5 11.2
392.5 19.4
314.8 41.8
561.6 49.7
342.3 50.3
67.0 11.1
39.0 7.7
79.0 11.5
325.8 94.2
1,474.7 271
225.5 68.2
0.8
2.6
1.9
1.5
1.1
1.6
0.7
1.7
10.9
2.3
4.4
11.3
4.6
2.6
1.1
0.6
3.2
11.3 0.4
26.3 7
9.2 0.5
17.8 22.6 6.1 12.0 11.1 7.8 17.1 12.3 0.5
15.6 16.0 19.4 9.6 5.7 7.2 5.5 9.0 42.5 6.8 0.1
0.4
0.4
0.3
0.1
0.1
0.1
0.7
6.2
0.7
0.3
1.6
0.2
0.1
0.1
0.1
0.2
1.3 0.1
1.9 0.6
0.6 0.6
0.7 2.0 0.1 0.3 0.9 0.5 0.6 1.9 0.1
2.2 1.9 4.1 2.1 0.6 0.6 0.5 2.8 7.1 1.7 0.4
0.1
0.1
0.1
—
—
0.1
0.3
2
0.1
0.3
0.2
—
0.1
0.1
—
—
0.2 0.2
0.2 0.1
0.1 0.1
0.9 0.2 —
0.1 0.3 —
—
0.3 0.3
0.4 0.6 0.7 0.2 —
—
0.1 1.6 7.8 0.3 0.9
2.7
2
1.6
1.2
1.7
0.8
2.2
9.7
2.5
12.9 0.4
28.3 7.3
9.8 0.5
19.4 4.4
24.8 13
6.2 4.8
12.3 2.7
12.3 1.1
8.3 0.6
17.7 3.3
14.5 0.5
18.1 18.5 24.2 12.0 6.2 7.7 6.1 13.4 57.5 8.8 - - - - - - - - - - - - - Trees per acre - - - - - - - - - - - - - -
Density
Diameter class (inches at large end)
5 to 19
20 to 39
≥40
Total
Mean SE Mean SE Mean SE Mean SE
Note: Means are calculated using a ratio of means formula across plots within forest type groups; data subject to sampling error; SE = standard error; — = less than 0.05 bone-dry tons per acre, 0.05 cubic feet per acre,
and 0.05 trees per acre were estimated; includes snags ≥5 inches diameter at breast height.
3.5 1.0 0.6
2.4
0.6
0.7
0.3
0.1
0.2
Nonstocked 2.3 3.2 0.9 2.3 1.8 1.2 0.9 1.4 0.1
Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood Other hardwoods Tanoak/laurel Western oak Woodland hardwoods Total
3.0 0.1
0.3
1.1
0.8
0.4
0.1
—
0.1
2.4
19.3
0.6
2.0 0.1
Total
2.9 4.3 5.6 1.2 0.1 —
0.2 9.9 75.6 1.2 0.2
0.5
0.7
0.5
0.1
0.2
0.1
1.6
5.8
1.1
114.7 78.5 149.1 114.5 29.7 27.8 32.5 42.7 149.8 58.0 3.6 2.8 7.3 3.1 0.5 0.2 0.7 4.9 7.6 2.7 2.7 2.2 3.9 2.0 0.6 0.7 0.7 2.5 4.3 1.0 0.2
0.3
0.4
0.3
0.1
0.1
0.1
0.7
1.1
0.3
- - - - - - - - - - - - - - - - Cubic feet per acre - - - - - - - - - - - - - - - -
Volume
Diameter class (inches at large end)
5 to 19
20 to 39
≥40
Total Mean SE
Mean SE Mean SE
Mean SE
- - - - - - - - - - Bone-dry tons per acre - - - - - - - - - -
Biomass
Diameter class (inches at large end)
5 to 19
20 to 39
≥40
Total Mean SE Mean SE Mean SE Mean SE
Softwoods:
California mixed conifer Douglas-fir Fir/spruce/mountain hemlock Lodgepole pine Other western softwoods Pinyon/juniper
Ponderosa pine Redwood Western hemlock/Sitka spruce Western white pine Forest type group Table 27—Estimated average biomass, volume, and density of snags on forest land, by forest type group and diameter class, California, 2001–2005
GENERAL TECHNICAL REPORT PNW-GTR-763
Carbon
Total SE Total SE
Biomass
Carbon
Total SE Total SE
Biomass
USDA
Forest Service Other federal Carbon
Total SE Total SE
Biomass
State and
local goverments
4.7
2.0
1.6
0.5
0.5
—
0.4
0.7
1.1
0.2
4.3
3.4
0.9
2.9
0.5
0.4
0.2
0.5
0.4
—
0.3
60.6
3.0
8.6
0.5
0.3
—
0.5
1.7
5.4
0.3
49.0
2.4
1.0
0.8
0.3
0.3
—
0.2
0.3
0.6
0.1
2.1
28.6 1.7
2.5 0.5
13.0 1.5
1.6 0.3
0.9 0.2
0.4 0.1
1.3 0.2
0.2 0.2
— —
0.5 0.2
16.9
0.2
2.0
0.2
—
—
—
0.3
1.4
0.1
14.7
5.2
0.2
5.5
2.0
0.3
0.8
0.2
0.5
—
—
2.4
0.2
0.6
0.2
—
—
—
0.2
0.5
0.1
2.3
1.5
0.1
1.8
0.8
0.1
0.3
0.1
0.5
—
—
8.5
0.1
1.0
0.1
—
—
—
0.2
0.7
—
7.3
2.6
0.1
2.7
1.0
0.2
0.4
0.1
0.3
—
—
1.2
0.1
0.3
0.1
—
—
—
0.1
0.3
—
1.2
0.8
0.0
0.9
0.4
0.1
0.1
0.0
0.2
—
—
6.2
—
2.6
0.7
—
—
—
1.4
0.5
—
3.7
1.0
0.2
0.9
—
—
—
—
1.6
—
—
1.5
—
1.0
0.7
—
—
—
0.7
0.2
—
1.2
0.6
0.1
0.7
—
—
—
—
0.8
—
—
3.1
—
1.3
0.3
—
—
—
0.7
0.2
—
1.8
0.5
0.1
0.5
—
—
—
—
0.8
—
—
0.8
—
0.5
0.3
—
—
—
0.3
0.1
—
0.6
0.3
0.1
0.3
—
—
—
—
0.4
—
—
Carbon
21.4
—
5.9
0.6
—
—
0.1
3.3
2.0
—
15.5
6.3
2.6
1.2
0.4
—
—
0.5
3.0
1.4
—
—
3.0
0.3
—
—
—
1.7
1.0
—
7.7
3.2
1.3
0.6
0.2
—
—
0.2
1.5
0.7
—
2.4 10.7
—
1.0
0.3
—
—
0.11
0.8
0.5
—
2.3
0.9
1.1
0.4
0.3
—
—
0.2
1.0
1.4
—
1.2
—
0.5
0.2
—
—
—
0.4
0.2
—
1.1
0.5
0.5
0.2
0.1
—
—
0.1
0.5
0.7
—
Carbon
22.0
—
9.5
0.2
—
—
0.9
2.1
6.3
0.1
12.4
2.4
2.0
1.0
0.7
0.2
0.2
0.2
5.6
0.1
—
3.0
—
1.2
0.1
—
—
0.4
0.5
1.1
0.0
2.7
0.7
0.7
0.7
0.5
0.1
0.1
0.1
2.4
0.1
—
11.0
—
4.8
0.1
—
—
0.4
1.0
3.2
—
6.2
1.2
1.0
0.5
0.4
0.1
0.1
0.1
2.8
—
—
1.5
—
0.6
0.1
—
—
0.2
0.3
0.5
—
1.4
0.3
0.3
0.4
0.3
0.0
0.1
0.0
1.2
—
—
Total SE Total SE
Biomass
Noncorporate
private
Note: Totals may be off because of rounding; data subject to sampling error; — = less than 50,000 bone-dry tons were estimated; includes snags ≥ 5 inches in diameter at breast height.
121.2
6.0
Nonstocked All forest types 17.3
1.1
0.6
—
0.9
3.4
10.8
0.5
97.9
57.2
4.9
26.1
3.2
1.9
0.7
2.6
0.4
—
0.9
Total Alder/maple Aspen/birch Elm/ash/cottonwood Other hardwoods Tanoak/laurel
Western oak Woodland hardwoods Hardwoods:
Total California mixed conifer Douglas-fir Fir/spruce/mountain hemlock Lodgepole pine Other western softwoods Pinyon/juniper
Ponderosa pine Redwood Western hemlock/Sitka spruce Western white pine Biomass
Corporate
private
Total SE Total SE
Million bone-dry tons
Softwoods:
Forest type group Table 28—Estimated biomass and carbon mass of snags on forest land, by forest type group and owner group, California, 2001–2005
Carbon
187.8
6.3
37.3
2.7
0.6
—
1.9
10.5
20.8
0.7
144.2
72.1
10.0
34.7
6.3
2.4
1.7
3.4
11.1
1.5
0.9
3.0
2.0
0.8
1.8
0.5
0.2
0.2
0.3
1.4
0.7
0.2
3.1
6.6 93.9
2.0
2.5 18.6
3.3
1.0
1.2
0.9 1.4 0.5
0.5 0.3 0.3
—
— —
0.6 1.0 0.3
1.4 5.3 0.7
1.7 10.4 0.9
0.2 0.3 0.1
6.1 72.1
3.9 36.1
1.6 5.0
3.6 17.3
1.1
3.2
0.4 1.2
0.3 0.9
0.5 1.7
2.8 5.5
1.4 0.8
0.3 0.5
Total SE Total SE
Biomass
All owners
California’s Forest Resources, 2001–2005
153
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 29—Mean cover of understory vegetation on forest land, by forest type group and life form, California,
2001–2005
Seedlings and
saplings
Shrubs
Forbs
Graminoids
Forest type group Mean SE
Softwoods:
California mixed conifer 6.3
Douglas-fir 7.7
Fir/spruce/mountain hemlock 3.5
Lodgepole pine 3.7
Other western softwoods 1.7
Pinyon/juniper
1.0
Ponderosa pine 3.0
Redwood 7.9
Western hemlock/Sitka spruce 0.7
Western white pine 10.0
Mean SE
17.6 0.6
24.4 2.0
17.2 1.3
10.9 1.3
14.9 1.0
17.6 0.9
23.3 1.2
21.7 2.4
24.616.5
18.0 4.4
4.6
0.1
18.1 0.4
7.5
14.9
2.2
10.0
5.5
12.1
4.0
1.7
3.1
1.6
0.0
0.8
0.8
0.2
35.4
26.6
51.5
0.0
20.7
16.7
18.2
5.5
0.2
18.7 0.6
Nonstocked
1.6
0.6
28.9 2.8
All forest types
4.9
0.1
Chaparral on national forest
0.7
0.2
Hardwoods:
Alder/maple Aspen/birch Elm/ash/cottonwood Exotic hardwoods Other western hardwoods Tanoak/laurel Western oak Total
Note: Data subject to sampling error; SE = standard error.
154
Mean SE
Mean
SE
Bare soil
Mean SE
Percent
0.2
0.8
0.3
0.5
0.2
0.2
0.3
0.9
0.3
3.8
Total
Mean SE
All understory
plants
0.2
1.1
0.5
0.9
0.6
0.4
0.4
1.7
7.4
2.2
3.6
4.8
2.9
11.0
14.1
6.9
8.5
3.5
2.5
5.4
0.2
0.9
0.3
1.4
0.9
0.6
0.7
0.7
2.8
1.1
31.0
43.4
28.0
31.6
35.9
29.4
39.0
43.3
44.0
39.1
0.7
2.4
1.4
2.1
1.4
1.3
1.3
2.8
14.3
6.0
6.3 0.2
6.0
0.2
33.2
0.5
7.2 0.2
3.6 1.2
8.7 1.7
25.7 10.8
0.0 0.0
15.8 2.0
4.0 0.8
28.7 0.9
58.7
57.1
69.5
10.0
47.3
38.2
57.5
4.4
6.7
9.8
0.0
2.5
1.7
0.9
1.8
5.1
1.4
0.0
9.0
3.0
4.0
10.8 0.4
23.1
0.8
53.7
0.8
4.2 0.2
10.7
1.4
16.0
2.3
53.9
2.9
16.0 2.1
18.6 0.3
8.2 0.2
13.1
0.3
41.9
0.4
6.2 0.2
61.5 1.3
5.9 0.5
6.0
0.5
72.0
1.1
9.0 0.5
4.6
5.6
8.7
0.0
1.8
1.3
0.7
5.2
8.9
5.8
8.9
7.6
4.9
6.0
12.5
23.4
8.9
18.1
12.6
2.7
0.0
7.8
7.2
11.7
2.8
3.3
1.2
0.0
0.8
0.7
0.5
4.7
3.5
5.6
5.9
14.1
16.5
6.0
3.4
0.2
12.5
0.2
0.6
0.5
0.8
0.9
1.2
0.5
0.8
0.1
3.7
0.8
2.2
0.7
0.0
1.5
0.4
0.2
California’s Forest Resources, 2001–2005
Table 30—Mean cover of understory vegetation on forest land, by forest type class, age class, and life form,
California, 2001–2005
Forest type classa
and age class Seedlings and
saplings
Shrubs
Forbs
Graminoids
Mean SE
Mean SE
Mean SE
Mean SE
All understory
plants
Bare soil
Mean SE
Mean SE
Percent
Dry conifer:
0–19
20–39
40–79
80–159
160+
2.6
4.3
4.6
4.5
3.9
0.4
0.7
0.3
0.2
0.3
25.0
30.0
19.7
16.1
16.7
2.2
2.6
0.9
0.6
0.8
8.5
6.6
6.3
6.0
5.5
1.0
1.1
0.4
0.3
0.4
12.9
11.0
7.2
6.8
5.2
1.6
1.8
0.5
0.4
0.5
47.3
46.9
35.9
31.6
29.8
2.5
2.7
1.0
0.7
1.0
16.5
7.5
7.6
7.4
8.3
1.8
1.1
0.5
0.4
0.6
4.3
0.2
18.2
0.4
6.1
0.2
7.1
0.3
33.8
0.5
8.2
0.3
Wet conifer:
0–19
20–39
40–79
80–159
160+
6.3
5.5
5.2
5.0
6.4
1.4
0.8
0.5
0.5
0.8
35.2
34.2
23.5
13.7
18.5
5.9
3.4
1.9
1.2
2.3
10.5
10.8
7.5
7.4
7.5
2.7
1.5
0.9
0.9
1.0
6.9
3.8
3.8
3.2
3.2
1.9
1.7
0.6
0.4
0.6
54.8
51.7
37.9
27.9
33.9
7.9
3.3
2.1
1.7
2.4
10.6
6.0
3.8
5.1
3.8
2.3
1.9
0.5
0.5
0.7
5.4
0.3
20.0
1.0
7.9
0.5
3.5
0.3
35.0
1.2
4.6
0.3
13.1
10.0
4.8
4.8
3.5
1.3
1.1
0.3
0.4
0.5
32.9
24.5
18.4
16.3
14.0
3.0
2.0
0.9
1.0
1.2
10.1
7.4
9.9
10.5
14.3
1.3
0.9
0.6
0.6
1.1
14.3
8.6
21.6
25.4
33.9
2.4
1.7
1.2
1.3
2.2
65.4
47.2
50.6
52.7
60.4
2.6
2.3
1.3
1.4
2.0
9.2
3.0
3.6
4.4
4.1
1.4
0.6
0.3
0.4
0.7
5.4
0.2
18.2
0.6
10.7
0.4
23.6
0.8
53.5
0.8
4.2
0.2
11.5
9.8
7.2
7.0
8.0
2.9
3.2
2.8
2.2
3.7
24.3
45.9
36.9
29.2
27.1
9.7
7.5
6.0
7.6
7.6
11.0
20.5
15.3
16.7
7.4
4.1
4.1
3.7
6.7
3.3
8.9
3.0
4.5
4.8
18.4
4.2
2.0
1.4
2.6
7.0
52.1 10.0
68.4 6.2
59.9 6.3
54.6 8.8
52.8 9.2
1.5
0.6
1.0
4.6
5.7
0.7
0.2
0.3
3.3
3.0
8.4
1.4
35.4
3.5
15.2
2.1
7.2
1.7
59.6
3.4
2.4
0.8
All forest type classes:
0–19
20–39
40–79
80–159
160+
7.2
7.4
4.8
4.7
4.1
0.6
0.6
0.2
0.2
0.3
28.7
29.1
19.7
16.0
16.2
1.7
1.5
0.6
0.5
0.7
9.3
8.5
8.2
7.8
8.7
0.7
0.7
0.3
0.3
0.5
13.1
8.2
13.6
12.8
14.7
1.3
1.0
0.6
0.5
0.9
55.1
49.1
43.4
38.5
40.8
1.8
1.5
0.8
0.7
1.0
13.0
4.8
5.2
6.1
6.3
1.2
0.6
0.3
0.3
0.4
4.9
0.1
18.6
0.3
8.2
0.2
13.1
0.3
41.9
1.1
6.2
0.5
All ages
All ages
Dry hardwood:
0–19
20–39
40–79
80–159
160+
All ages
Wet hardwood:
0–19
20–39
40–79
80–159
160+
All ages
All ages
Note: Data subject to sampling error; SE = standard error.
a Dry conifer includes the pinyon/juniper; ponderosa, western white, and lodgepole pines; other softwoods; mixed conifer; and nonstocked forest types.
Wet conifer includes the Douglas-fir, fir/spruce/mountain hemlock, hemlock/Sitka spruce, and redwood forest types. Dry hardwood includes the western
oak, tanoak/laurel, other hardwoods, and exotic forest types. Wet hardwood includes the elm/ash/cottonwood, aspen/birch, and alder/maple forest types.
155
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 31—Estimated mean crown density and other statisticsa for live trees on forest land, by species
group, California, 2001–2005
Crown density
Species group
Plots
Softwoods:
Douglas-fir
Incense-cedar
Lodgepole pine
Other western softwoods
Ponderosa and Jeffrey pines
Redwood
Sugar pine
True fir
Western white pine
Western woodland softwoods
- - Number - -
- - - - - - - - - - - - - - - - - Percent - - - - - - - - - - - - - - -
86
53
20
63
103
11
42
97
15
16
685
340
262
292
781
153
150
1,159
68
77
39.4
39.5
38.4
41.8
40
33.8
41.9
43.9
36.5
47.9
0.9
1.2
2.2
1.3
1.1
2.3
1.8
0.9
1.7
4.8
0
10
5
0
5
0
0
0
15
10
40
40
40
40
40
35
40
40
35
45
85
75
85
80
95
65
80
99
55
90
303
5,454
44.2
0.9
0
40
99
Hardwoods:
Cottonwood and aspen
Oak
Other western hardwoods
Red alder
Western woodland hardwoods
5
147
66
6
19
49
1,904
906
59
181
26.7
33.6
34.6
43
38.1
2.8
0.6
1.2
2.8
2.8
0
0
0
15
5
25
35
35
40
35
60
85
85
70
85
194
3,099
34.2
0.6
0
35
85
327
7,077
38
0.5
0
35
99
Total
Total
All species groups
Trees
Mean SE
Minimum
Note: Data subject to sampling error; SE = standard error; includes live trees >4.9 inches diameter at breast height.
a The mean, SE, and median calculations consider the clustering of trees on plots.
156
Median
Maximum
California’s Forest Resources, 2001–2005
Table 32—Estimated mean foliage transparency and other statisticsa for live trees on forest land, by
species group, California, 2001–2005
Foliage transparency
Species group
Plots
Softwoods:
Douglas-fir
Incense-cedar
Lodgepole pine
Other western softwoods
Ponderosa and Jeffrey pines
Redwood
Sugar pine
True fir
Western white pine
Western woodland softwoods
- - Number - -
- - - - - - - - - - - - - - - - - Percent - - - - - - - - - - - - - - -
86
53
20
63
103
11
42
97
15
16
685
340
262
292
781
153
150
1,159
68
77
18.9
18.7
17.2
18.7
20.3
19.2
19.3
16.8
18.2
17.7
0.4
0.5
0.8
0.9
0.5
1.4
0.5
0.4
1.4
1.3
0
5
10
5
5
0
10
0
15
5
20
20
15
15
20
20
20
15
15
20
40
35
40
40
65
99
65
99
30
30
266
3,978
18.4
0.2
0
20
99
Hardwoods:
Cottonwood and aspen
Oak
Other western hardwoods
Red alder
Western woodland hardwoods
5
147
66
6
19
49
1,904
906
59
181
25.4
22.3
21.2
20.6
26.1
2.9
0.5
0.9
0.5
2.0
15
0
5
15
15
25
20
20
20
25
99
99
99
25
60
194
3,099
22.2
0.4
0
20
99
327
7,077
20.1
0.3
0
20
99
Total
Total
All species groups
Trees
Mean SE
Minimum
Median
Maximum
Note: Data subject to sampling error; SE = standard error; includes live trees >4.9 inches diameter at breast height.
a
The mean, SE, and median calculations consider the clustering of trees on plots.
157
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 33—Estimated mean crown dieback and other statisticsa for all live trees on forest land, by species
group, California, 2001–2005
Crown density
Species group
Plots
Softwoods:
Douglas-fir
Incense-cedar
Lodgepole pine
Other western softwoods
Ponderosa and Jeffrey pines
Redwood
Sugar pine
True fir
Western white pine
Western woodland softwoods
- - Number - -
86
53
20
63
103
11
42
97
15
16
686
340
262
293
781
153
150
1,159
69
77
0.8
2.0
1.3
2.0
1.1
2.5
1.1
2.0
2.2
4.9
0.2
0.4
0.4
0.4
0.3
1.9
0.5
0.5
1.1
1.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
90
90
25
75
80
99
50
99
40
30
266
3,981
1.6
0.2
0
0
99
Hardwoods:
Cottonwood and aspen
Oak
Other western hardwoods
Red alder
Western woodland hardwoods
5
148
66
6
19
49
1,924
917
59
181
6.0
4.6
2.6
3.7
8.0
4.5
0.6
0.7
1.4
2.6
0
0
0
0
0
0
0
0
5
5
99
99
99
15
80
195
3,130
4.2
0.5
0
0
99
327
7,111
2.8
0.2
0
0
99
Total
Total
All species groups
Trees
Mean SE
Minimum
Maximum
- - - - - - - - - - - - - - - - - Percent - - - - - - - - - - - - - - -
Note: Data subject to sampling error; SE = standard error; includes live trees >4.9 inches diameter at breast height.
a
The mean, SE, and median calculations consider the clustering of trees on plots.
158
Median
California’s Forest Resources, 2001–2005
Table 34—Properties of the forest floor layer on forest land, by forest type, California, 2001, 2003–2005
Forest type Samples
Bigleaf maple
Blue oak
California black oak
California mixed conifer
California white oak (valley oak)
Canyon live oak
Coast live oak
Cottonwood
Cottonwood/willow
Douglas-fir
Gray pine
Interior live oak
Jeffrey pine
Juniper woodland
Knobcone pine
Lodgepole pine
Miscellaneous western softwoods
Mountain brush woodland
Nonstocked
Oregon white oak
Other hardwoods
Pacific madrone
Pinyon/juniper woodland
Ponderosa pine
Port-Orford-cedar
Red alder
Red fir
Redwood
Tanoak
Western juniper
Western white pine
White fir
Whitebark pine
Number
1
20
10
61
2
22
9
1
1
5
7
10
7
5
1
11
2
4
6
4
1
3
5
11
1
1
6
2
16
9
2
14
1
Moisture content
(oven-dry basis)
Percent 6.35
8.42
32.34
21.41
10.91
18.57
26.68
9.92
15.12
64.51
15.67
9.56
11.07
14.36
9.39
15.32
12.37
5.52
8.49
16.92
22.10
16.27
13.27
27.38
20.68
46.61
18.76
15.67
48.24
22.00
10.37
44.52
7.74
Organic carbon
Total nitrogen
- - - - - - - Percent - - - - - - 19.33
0.56
24.80
0.90
29.01
0.77
33.81
0.73
28.21
0.74
26.94
0.65
30.23
0.93
32.27
0.86
26.00
0.84
27.17
0.84
28.30
0.79
29.77
0.82
37.71
0.83
24.91
0.54
28.57
0.66
33.51
0.79
41.84
0.62
30.48
1.11
32.67
0.69
35.66
0.94
33.03
1.17
40.15
0.87
31.42
0.71
36.74
0.80
41.06
1.21
31.33
0.83
29.47
0.64
33.98
0.38
30.27
0.70
32.31
0.71
26.44
0.67
32.42
0.93
37.32
1.22
Note: Data subject to sampling error.
159
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 35—Properties of the mineral soil layer on forest land, by depth of layer and forest type, California,
2001, 2003–2005
Soil properties
Depth of layer and forest type
Samples
Mineral layer 1 (0–10 cm):
Bigleaf maple
Blue oak
California black oak
California mixed conifer
California white oak (valley oak)
Canyon live oak
Coast live oak
Cottonwood
Cottonwood/willow
Douglas-fir
Gray pine
Interior live oak
Jeffrey pine
Juniper woodland
Knobcone pine
Lodgepole pine
Misc. western softwoods
Mountain brush woodland
Nonstocked
Oregon white oak
Pacific madrone
Pinyon/juniper woodland
Ponderosa pine
Red alder
Red fir
Redwood
Tanoak
Western juniper
Western white pine
White fir
Number Most common Mineral layer 2 (10–20 cm):
Bigleaf maple
Blue oak
California black oak
California mixed conifer
California white oak (valley oak)
Canyon live oak
Coast live oak
Cottonwood
Cottonwood/willow
Douglas-fir
Gray pine
Interior live oak
Jeffrey pine
Juniper woodland
Knobcone pine
Lodgepole pine
Misc. western softwoods
Mountain brush woodland
Nonstocked
Oregon white oak
Pacific madrone
Pinyon/juniper woodland
Ponderosa pine
Red alder
Red fir
Redwood
Tanoak
Western juniper
Western white pine
White fir
Texture Moisture content (oven-dry basis)
- -- - - - - - - - -Percent- - - - - - - - - - -
Bulk density
g/cm3
1
18
9
52
2
18
7
1
1
3
7
8
6
4
1
10
1
2
5
2
3
4
6
1
5
1
13
7
1
13
Clayey
Loamy
Loamy
Loamy
Sandy
Loamy
Clayey
Loamy
Sandy
Loamy
Clayey
Loamy
Loamy
Sandy
Clayey
Loamy
Loamy
Loamy
Loamy
Clayey
Loamy
Sandy
Loamy
Loamy
Loamy
Loamy
Loamy
Loamy
Loamy
Loamy
8.19
5.46
59.37
11.36
5.79
11.09
10.88
33.57
6.04
21.26
7.02
6.20
6.04
2.00
5.25
5.64
29.04
7.42
11.70
9.79
8.77
1.42
11.53
19.14
10.76
7.88
17.28
8.25
5.52
17.02
19.72
31.90
40.12
38.41
36.31
43.73
46.25
65.29
8.00
53.11
28.37
25.22
24.05
19.88
35.50
24.36
18.54
13.98
26.04
38.00
34.44
21.76
16.72
44.96
32.18
40.31
42.49
20.68
43.59
39.48
1.23
1.28
0.96
1.00
1.63
1.12
1.15
1.23
0.77
0.84
1.43
1.15
1.19
1.57
1.52
1.05
—
1.10
1.05
0.99
1.06
1.65
1.04
0.90
0.83
0.87
0.95
1.05
—
0.85
1
17
7
47
2
14
5
1
1
3
6
7
6
2
1
10
1
2
5
2
3
3
6
1
4
1
13
6
1
12
Clayey
Loamy
Loamy
Loamy
Sandy
Loamy
Clayey
Loamy
Sandy
Loamy
Clayey
Loamy
Loamy
Sandy
Clayey
Loamy
Loamy
Loamy
Loamy
Clayey
Loamy
Sandy
Loamy
Clayey
Loamy
Loamy
Clayey
Clayey
Loamy
Loamy
9.92
5.88
13.13
12.01
7.38
14.64
9.70
13.53
11.51
21.21
8.32
6.87
7.18
2.54
6.28
6.70
28.00
9.91
11.59
11.59
11.31
2.05
11.69
16.17
12.59
9.44
19.35
11.24
6.31
17.91
19.03
27.56
40.89
37.39
43.95
39.33
42.18
54.02
19.85
42.27
37.38
28.40
27.23
29.65
34.31
26.28
27.28
40.16
30.36
49.17
20.55
28.04
26.42
53.25
34.74
69.92
39.98
34.43
13.34
38.47
1.37
1.40
1.01
1.20
1.77
1.22
1.30
1.37
1.13
1.08
1.47
1.33
1.22
1.93
1.08
1.28
—
1.54
1.27
1.26
1.19
1.58
1.39
0.67
0.96
1.01
1.08
1.02
—
0.89
Note: Data subject to sampling error; — = No data available for this sample.
160
Coarse fragments
Samples
Number
Mineral layer 1 (0–10 cm):
Bigleaf maple
1
Blue oak
18
California black oak
9
California mixed conifer
52
California white oak (valley oak)
2
Canyon live oak
18
Coast live oak
7
Cottonwood
1
Cottonwood/willow
1
Douglas-fir
3
Gray pine
7
Interior live oak
8
Jeffrey pine
6
Juniper woodland
4
Knobcone pine
1
Lodgepole pine
10
Misc. western softwoods
1
Mountain brush woodland
2
Nonstocked
5
Oregon white oak
2
Pacific madrone
3
Pinyon/juniper woodland
4
Ponderosa pine
6
Red alder
1
Red fir
4
Redwood
1
Tanoak
13
Western juniper
7
Western white pine
1
White fir
13
Depth of layer and forest type
5.95
6.36
6.02
5.88
6.33
6.07
6.23
7.51
7.05
5.67
6.42
6.06
6.18
6.56
5.95
5.21
6.49
6.36
6.27
6.69
5.54
6.80
6.08
5.40
5.41
12.80
5.02
6.41
4.91
5.94
5.20
5.83
5.25
5.24
5.74
5.42
5.76
7.36
6.65
5.01
5.72
5.44
5.34
5.90
5.24
4.47
5.95
5.81
5.73
6.10
4.90
6.22
5.36
4.68
4.67
0.31
4.33
5.78
4.30
5.34
3.82
2.41
7.83
4.27
1.73
4.54
3.83
1.71
0.78
5.78
1.89
2.92
2.63
0.80
1.43
2.86
7.80
3.30
3.26
3.00
3.07
0.59
3.92
4.86
4.98
0.43
3.80
4.66
4.73
6.81
0.22
0.20
0.19
0.17
0.16
0.22
0.27
0.67
0.18
0.15
0.20
0.20
0.18
0.13
0.23
0.12
0.33
0.20
0.31
0.25
0.18
0.19
0.28
0.12
0.13
68.20
0.19
0.21
0.20
0.22
0.19
0.20
0.40
0.17
0.12
0.23
0.27
0.15
0.07
0.29
0.12
0.17
0.18
0.08
0.09
0.12
0.46
0.29
0.19
0.14
0.15
0.04
0.20
0.26
0.17
21.66
0.14
0.37
0.09
0.32
- - - - - - - Percent - - - - - -- 15.29
20.56
41.16
57.49
27.82
61.23
18.26
4.68
16.66
66.91
15.32
28.37
105.67
19.62
12.20
90.51
2.57
35.83
16.33
48.95
100.71
26.39
32.39
86.82
77.84
462.57
18.15
15.24
40.70
37.86
mg/kg Organic Inorganic Total Extractable H2O CaCl 2 carbon
carbon nitrogen phosphorus
pH K
Mg
Ca
Al
ECECa
22.64
9.60
10.19
14.78
0
13.47
9.43
539.9
0
16.25
16.04
13.51
17.35
6.94
0.10
3.26
44.45
11.00
5.67
26.73
0.64
3.59
11.40
17.66
14.35
725.20
14.88
12.67
0
17.13
357.80
259.36
226.40
247.81
169.86
222.02
270.01
386.00
157.70
233.33
228.65
188.67
208.46
158.53
160.50
90.65
113.88
537.78
263.39
392.45
198.68
95.67
449.95
273.90
109.42
5454.00
220.90
235.10
54.23
255.54
594.50
463.05
239.70
255.03
123.24
182.40
605.10
839.90
600.50
221.97
596.60
198.39
75.72
253.23
145.30
46.62
3925.00
274.70
238.54
439.10
146.51
69.95
265.89
153.70
25.49
3.17
204.32
406.62
38.03
149.49
2360.03
2125.87
2377.54
1557.13
1462.40
2061.75
2268.31
5881.00
3016.00
2030.98
1978.33
1444.81
1319.39
1486.24
670.00
450.04
174.60
3310.50
2563.38
2424.00
1037.95
1176.25
2688.83
1117.93
467.58
34.49
880.33
2222.44
588.90
2124.62
1.86
3.07
20.77
27.97
0
26.04
2.09
0.76
0
44.01
2.07
17.8
17.27
0
3.92
73.68
0
1.06
70.43
0
18.71
0.08
1.55
45.84
93.77
5.48
212.06
16.67
81.46
30.85
0
7.18
4.07
5.85
17.19
5.08
7.94
956.30
0.93
5.48
4.87
2.94
3.12
0.37
0
2.03
4.72
5.94
8.66
9.61
18.11
1.61
5.48
5.74
2.65
6.11
3.76
3.75
7.94
9.06
15.28
4.30
12.90
mg/kg
Extractable
sulfur
17.70
15.16
14.69
10.88
8.75
12.70
17.05
39.60
20.39
13.12
15.46
9.58
8.01
9.93
4.99
3.69
33.63
20.21
16.23
16.83
7.10
6.71
16.82
8.13
3.93
- - - - - - - - - - - - - - - mg/kg - - - - - - - - - - - - - - - cmolc/kg
Na
Exchangeable cations
Table 36—Chemical properties of mineral soil layers on forest land, by depth and forest type, California, 2001, 2003–2005
California’s Forest Resources, 2001–2005
161
162
Samples
6.18
6.35
5.78
5.90
6.06
6.16
5.66
7.54
7.12
5.63
6.34
6.08
5.99
6.72
5.58
5.48
6.47
6.71
6.56
6.48
5.62
7.22
6.22
5.62
5.46
6.02
5.23
6.34
5
6.07
4.98
5.73
5.08
5.19
5.18
5.49
4.90
7.33
6.66
4.99
5.49
5.21
5.39
5.95
4.90
4.62
6.01
6.02
5.96
5.79
4.93
6.49
5.41
4.82
4.70
5.38
4.60
5.68
4.39
5.35
1.14
1.57
4.04
2.56
1.21
2.89
1.95
0.40
1.67
4.25
0.93
1.17
2.07
0.66
1.58
1.66
9.16
1.22
1.26
1.77
2.60
0.45
3.38
4.61
2.79
4.99
2.70
2.72
2.01
4.17
0.20
0.18
0.17
0.13
0.14
0.15
0.20
0.34
0.21
0.16
0.14
0.17
0.14
0.18
0.20
0.14
0.26
0.11
0.37
0.12
0.17
0.17
0.14
0.21
0.16
0.20
0.17
0.15
0.20
0.17
0.12
0.14
0.21
0.10
0.09
0.15
0.15
0.03
0.11
0.19
0.08
0.12
0.10
0.10
0.07
0.08
0.48
0.11
0.08
0.10
0.14
0.03
0.16
0.24
0.08
0.17
0.12
0.15
0.05
0.24
- - - - - - - Percent - - - - - -- 8.30
19.44
30.37
29.91
57.44
46.92
11.02
2.52
13.98
77.74
11.06
38.24
67.85
16.91
9.57
73.62
1.46
5.39
8.65
40.34
65.12
4.95
24.13
108.91
51.01
59.60
17.50
9.80
253
27.51
mg/kg Organic Inorganic Total Extractable H2O CaCl 2 carbon
carbon nitrogen phosphorus
pH K
Mg
Ca
Al
0
9.41
10.37
8.32
3.95
10.38
11.45
134.70
1.13
14.22
12.10
13.51
10.01
4.57
0
9.68
31.45
19.5
8.34
21.10
3
16.41
4.27
10.11
18.86
0
13.77
10.49
0
7.04
173.6
254.27
216.37
225.73
153.95
209.46
164.09
268.60
170.30
212.37
210.22
172.13
162.11
74.73
126.50
94.87
136.46
226.31
191.16
217.70
166.94
117.17
379.51
150.60
126.13
393.81
175.21
207.70
54.36
230.58
530.7
449.26
144.07
208.45
118.28
164.60
645.86
345.40
630.20
143.40
805.02
151.57
55.79
122.15
122.40
47.17
3741
177.15
227.21
530.40
102.68
78.08
190.87
103.80
15.20
425.90
189.05
454.36
5.49
109.92
1683
2066.02
1375.31
1141.47
1115.75
1838.23
1197.04
3549
3173
1286.40
1920.36
1098.60
1011.27
1624.5
558.30
401.26
195.70
2174.55
2149.88
1975
749.57
1537.73
1687.60
1242
310.43
3066
851.42
1982.75
151.70
1805.57
10.49
6.06
44.49
31.69
2.43
20.83
37.98
0
0
27.55
4.14
45.52
20.71
1.10
7.53
62.41
0
0.72
50.77
0
23.16
0.70
4.33
23.52
68.25
2.32
190.83
28.66
84.19
13.29
- - - - - - - - - - - - - - - mg/kg - - - - - - - - - - - - - - -
Na
Exchangeable cations
13.32
14.76
9.14
8.38
6.98
11.34
12.18
21.82
21.46
8.51
16.84
7.73
6.19
9.33
4.20
3.37
32.23
12.98
13.69
14.87
5.28
8.69
11.03
7.74
2.84
19.83
8.43
14.53
1.88
10.68
cmolc/kg
ECECa
1.11
3.29
10.03
6.18
7.48
6.32
3.49
442.10
0.12
1.76
1.18
3.09
2.16
0.41
0
2.77
14.63
3.61
58.11
4.13
3.74
18.85
3.12
5.61
8.46
5.72
4.58
3.05
0
2.88
mg/kg
Extractable
sulfur
Note: Data subject to sampling error; — = less than 0.005 cmolc/kg were estimated; H 2O = water, CaCl 2 = calcium chloride, Na = sodium, K = potassium, Mg = magnesium, Ca = calcium, and Al = aluminum.
a ECEC = effective cation exchange capacity.
Number
Mineral layer 2 (10–20 cm):
Bigleaf maple
1
Blue oak
17
California black oak
7
California mixed conifer
47
California white oak (valley oak)
2
Canyon live oak
14
Coast live oak
5
Cottonwood
1
Cottonwood/willow
1
Douglas-fir
3
Gray pine
6
Interior live oak
7
Jeffrey pine
6
Juniper woodland
2
Knobcone pine
1
Lodgepole pine
10
Misc. western softwoods
1
Mountain brush woodland
2
Nonstocked
5
Oregon white oak
2
Pacific madrone
3
Pinyon/juniper woodland
3
Ponderosa pine
6
Red alder
1
Red fir
3
Redwood
1
Tanoak
13
Western juniper
6
Western white pine
1
White fir
12
Depth of layer and forest type
Table 36—Chemical properties of mineral soil layers on forest land, by depth and forest type, California, 2001, 2003–2005 (continued)
GENERAL TECHNICAL REPORT PNW-GTR-763
California’s
Forest
Resources,
2001–2005
Table 37—Chemical properties (trace elements) of forest floor and mineral soils
on forest
land,
by forest
type,
California, 2001, 2003–2005
Depth of layer and forest type Extractable
Samples
Number
Mineral layer 1 (0–10 cm):
Bigleaf maple
1
Blue oak
18
California black oak
9
California mixed conifer
52
California white oak (valley oak)
2
Canyon live oak
18
Coast live oak
7
Cottonwood
1
Cottonwood / willow
1
Douglas-fir
3
Gray pine
7
Interior live oak
8
Jeffrey pine
6
Juniper woodland
4
Knobcone pine
1
Lodgepole pine
10
Misc. western softwoods
1
Mountain brush woodland
2
Nonstocked
5
Oregon white oak
2
Pacific madrone
3
Pinyon/juniper woodland
4
Ponderosa pine
6
Red alder
1
Red fir
4
Redwood
1
Tanoak
13
Western juniper
7
Western white pine
1
White fir
13
Mineral layer 2 (10–20 cm):
Bigleaf maple
1
Blue oak
17
California black oak
7
California mixed conifer
47
California white oak (valley oak)
2
Canyon live oak
14
Coast live oak
5
Cottonwood
1
Cottonwood / willow
1
Douglas-fir
3
Gray pine
6
Interior live oak
7
Jeffrey pine
6
Juniper woodland
2
Knobcone pine
1
Lodgepole pine
10
Misc. western softwoods
1
Mountain brush woodland
2
Nonstocked
5
Oregon white oak
2
Pacific madrone
3
Pinyon/juniper woodland
3
Ponderosa pine
6
Red alder
1
Red fir
3
Redwood
1
Tanoak
13
Western juniper
6
Western white pine
1
White fir
12
Manganese
Iron
Nickel
Copper
Zinc
Cadmium
Lead
- - - - - - - - - - - - - - - - - - - - - - - - - - - mg/kg - - - - - - - - - - - - - - - - - - - - - - - - - - 19.11
10.83
30.26
35.40
8.63
21.88
30.19
3.69
9.99
53.51
17.70
8.05
14.58
6.73
14.67
25.89
8.83
16.26
6.58
10.48
26.84
5.93
16.32
36.22
23.33
28.42
39.40
17.32
102.70
37.57
—
0.12
0.07
0.95
0.19
0.60
0.10
0.54
—
0.02
0.15
1.26
0.08
0.02
—
0.01
—
0.35
2.74
0.54
0.30
—
1.07
—
5.70
—
5.76
0.74
3.56
1.58
—
0.35
0.39
0.80
—
0.10
0.26
—
—
0.24
0.39
0.10
—
0.05
—
0.12
10.74
0.12
0.26
0.10
0.10
0.02
0.06
0.49
0.07
—
0.65
0.10
0.05
0.30
—
—
—
0.01
—
—
0.03
—
—
0.32
—
0.02
0.34
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.06
0.35
0.23
0.10
0.26
—
0.40
0.34
—
—
0.36
—
0.21
0.46
0.04
—
0.55
—
—
0.11
0.13
0.01
0.04
0.22
0.61
0.68
0.03
0.46
0.11
1.80
0.53
0.11
0.06
0.06
0.05
0.07
0.05
0.05
0.07
0.01
0.07
0.05
0.05
0.13
0.05
0.02
0.03
0.06
0.01
0.02
0.02
0.07
0.05
—
0.04
0.04
0.06
0.04
0.02
0.05
0.03
—
0.06
0.18
0.07
—
0.43
0.09
0.13
—
0.09
0.10
0.02
0.15
—
0.03
0.15
1.18
—
—
0.18
0.04
—
0.11
—
0.21
—
0.17
0.02
0.07
0.03
7.20
9.40
33.50
17.24
6.69
12.81
19.96
3.65
6.87
25.16
6.75
4.04
8.40
6.18
20.35
19.17
8.56
6.59
3.11
8.23
21.24
2.97
11.57
38.77
8.17
15.65
23.85
14.81
53.11
10.97
—
0.06
0.08
1.13
0.22
0.13
—
—
—
0.01
0.23
2.87
0.51
—
0.27
0.10
—
—
0.28
—
—
—
—
—
3.65
—
2.33
0.79
—
0.37
0.25
0.35
0.56
0.34
0.01
0.03
1.18
0.01
—
0.15
0.67
0.13
0.04
—
0.06
0.14
—
0.11
0.15
0.11
—
—
—
0.54
—
—
0.24
0.14
—
0.64
—
0.01
0.01
0.03
—
0.02
0.01
—
—
—
—
0.04
0.09
—
—
0.04
—
—
0.04
0.19
—
—
—
—
—
—
0.03
0.02
—
—
0.10
0.01
0.11
0.18
—
0.09
1.10
—
—
0.31
0.10
0.26
0.31
0.04
—
0.31
0.11
—
0.05
0.01
0.03
0.30
0.08
0.70
—
—
0.13
0.14
0.69
0.17
0.05
0.04
0.02
0.03
0.05
0.02
0.02
0.06
0.01
0.03
0.01
0.03
0.10
0.02
0.04
0.01
—
0.02
0.01
0.02
0.01
0.01
0.01
0.12
0.01
0.04
0.02
0.02
0.01
0.02
—
0.10
0.03
0.25
0.07
0.17
0.37
—
—
0.60
0.28
0.27
0.16
0.41
0.13
0.6
0.71
—
0.21
0.07
0.07
0.13
0.17
1.15
0.01
—
0.25
0.19
—
0.03
Note: Data subject to sampling error; — = less than 0.005 mg/kg were estimated.
163
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 38—Compaction, bare soil, and slope properties of forest land, by forest type, California, 2001,
2003–2005
Forest type
Plots
sampled
Number
Bigleaf maple
1
Blue oak
22
California black oak
9
California mixed conifer
62
California white oak (valley oak)
2
Canyon live oak
21
Coast live oak
9
Cottonwood
1
Cottonwood / willow
2
Douglas-fir
3
Gray pine
7
Interior live oak
11
Jeffrey pine
7
Juniper woodland
5
Knobcone pine
1
Lodgepole pine
11
Misc. western softwoods
2
Mountain brush woodland
5
Nonstocked
6
Oregon white oak
4
Other hardwoods
1
Pacific madrone
2
Pinyon/juniper woodland
6
Ponderosa pine
11
1
Port-Orford-cedar
Red alder
1
Red fir
6
3
Redwood
Tanoak
17
Western juniper
9
Western white pine
2
White fir
12
Whitebark pine
1
Note: Data subject to sampling error.
164
Plots reporting compaction
Compacted
area per plot
Bare soil cover
Slope
- - - - - - - - - - - - - - - - - - - - Percent - - - - - - - - - - - - - - - - - - 0
0
2.33
65
14
24.99
6.85
21.86
5
3.30
3.08
42.44
26
5.42
5.31
30.90
0
0
3
27.50
7
2.23
6.06
54.38
1
0.33
4.28
37.56
1
6.25
17.5
0
2
18.25
1.50
7
0
0
1
36
4
1.89
5.07
14.17
2
0.89
3.77
26.78
1
0.36
5.60
23.71
2
2.75
28
30.8
1
2.50
12.75
28
3
0.89
15.06
13.09
0
0
5.50
45
0
0
6.07
24.8
0
0
4.07
19.83
0
0
2.17
28.33
0
0
0.75
63
0
0
2.13
47
0
0
17.29
35
3
3.07
10.41
17.82
0
0
1
25
1
25
5
37
2
2.71
8.92
30.83
0
0
3
44.67
9
4.42
4.75
39.63
4
1.83
9.68
15.63
0
0
1.50
30.50
6
9.06
7.15
22.50
0
0
5.50
38
Total
443
1,314
1,558
1,676
21,500
38,590
5,429
988
523
64,428
170
1,314
1,869
3,274
7,510
46,460
21,331
15,343
1,806
34,965
2,210
96
14,647
307
8
8,913
38,572
3,190
41,406
7,774
12,553
14,649
2,764
102
13,843
2,059
3,760
9,237
11,374
634
9,199
61,449
15,106
312
131
413
328
919
747
1,866 1,005
4,962 1,443
124,434 22,711
1,260
626
793
295
47
47
139,100 9,707
100
97
1,635
685
—
—
82
80
13,699 2,820
66,645
7,181
50,045 5,835
8,095 2,671
1,630
649
94,066 12,464
294
300
96
81
21,858 10,201
103
73
7
8
680
247
105,753 9,229
708
339
37,854 5,780
—
—
9,913 6,893
32,699 4,787
2,397 2,067
—
—
24,693 3,473
3,652 1,867
1,183 1,230
2,028
945
23,704 3,664
262
219
20,053 4,909
217,543 21,749
25,188
7,016
5,665,903 142,105 1,040,770 49,029
Softwoods:
Bigcone Douglas-fir 1,064
Bishop pine 1,979
Brewer spruce 2,991
Bristlecone pine 3,096
California juniper 44,081
California red fir 330,563
California torreya 15,283
Coulter pine 3,309
Cypress 608
Douglas-fir 1,295,852
Engelmann spruce 250
Foxtail pine 3,118
Giant sequoia 1,844
Grand fir 6,492
Gray pine 46,120
Incense-cedar 646,868
Jeffrey pine 237,458
Knobcone pine 44,600
Limber pine 4,316
Lodgepole pine 277,288
Monterey cypress 2,165
Monterey pine 124
Mountain hemlock 57,325
Noble fir 584
Pacific silver fir 7
Pacific yew 23,114
Ponderosa pine 603,647
Port-Orford-cedar 7,605
Redwood 308,717
Sargent’s cypress 8,449
Shasta red fir 29,492
Singleleaf pinyon 135,682
Sitka spruce 5,826
Subalpine fir 101
Sugar pine 133,742
Utah juniper 5,809
Washoe pine 3,614
Western hemlock 27,604
Western juniper 111,496
Western redcedar 720
Western white pine 57,150
White fir 1,110,177
Whitebark pine 65,574
16,423
—
—
—
8
64
415
—
—
—
4,709
—
—
—
—
134
293
1,027
156
8
693
—
—
50
—
—
93
800
17
3,197
—
622
109
1,109
—
171
36
—
376
641
—
168
1,382
153
17,849
—
—
—
—
8
1,766
—
8
—
412
—
—
—
—
861
186
1,685
297
—
1,250
—
—
7
—
—
—
3,679
—
—
—
—
1,187
—
—
386
—
—
101
—
—
106
5,917
—
96,838
8
—
55
—
—
10,266
—
—
—
23,182
—
26
—
—
1,626
475
1,897
1,768
—
11,291
—
—
408
—
—
—
9,299
—
2,386
—
—
665
—
—
6,529
—
—
73
—
—
5,298
21,570
—
4,183
—
—
—
—
—
17
—
—
—
748
—
—
—
—
—
158
53
—
—
—
—
—
—
—
—
—
503
—
—
—
—
—
—
—
39
—
—
—
—
—
7
2,658
—
Thousand trees
167,176
—
82
—
—
2,180
49,797
—
23
—
5,793
100
—
—
—
5,866
—
12,422
2,425
—
12,573
147
—
2,008
—
—
—
18,031
—
102
—
3,924
8,224
55
—
1,174
—
—
1,103
151
—
420
42,755
—
22,373
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5,168
—
—
55
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
370
—
—
7,510
—
—
7,144
—
25,775
—
—
—
—
8
5,530
—
—
—
1,117
—
—
—
—
170
7,608
905
582
—
2,400
—
—
850
—
—
—
1,095
—
143
—
634
47
—
—
247
—
—
—
3,405
—
273
767
—
37,077
54
—
8
559
—
1,353
297
8
—
15,109
—
74
—
—
546
1,989
727
140
1,404
1,755
73
82
334
—
—
91
1,620
240
2,568
—
257
895
14
—
698
12
—
73
2,403
39
357
3,881
759
266
331
174
1,095
—
52,967
1,094
749
47
95,713
50
1,544
—
82
6,097
51,354
31,877
4,808
328
60,136
220
96
12,968
8
7
546
67,482
535
32,046
—
4,805
22,919
1,233
—
18,255
3,422
88
1,041
10,834
254
13,635
114,401
21,138
2,317 638,897
—
—
—
—
3,175
59
—
—
—
294
—
—
—
—
—
6
188
—
—
54
—
—
—
—
—
—
1,145
8
—
—
8
—
—
—
—
—
—
—
337
—
—
219
—
51,471
2,103
—
—
—
—
—
—
9,063
—
31
—
—
—
—
—
394
—
—
—
41
—
39
33,555
—
—
—
—
—
82
1,457
—
13
—
1,345
—
—
—
—
—
1,792
1,591
47
91,521
1,200
—
1,095
—
372
—
2,655
11,884
5,938
13,494
—
—
11,303
94
—
—
511
50
215
—
3,971
1,397
—
30,072
—
—
—
684
—
222
—
—
47
1,954
2,424
—
—
—
736
795
Type of damage
Number of live
Total number b
Physical
of live trees
trees with damage
Bark
Dwarf
Leafy
Foliage Stem Other damage
Root
Species
Total
SE
Total
SE
Animal beetles Cankers Defoliators mistletoe mistletoe diseases decay insects or defect disease Weather
Table 39—Estimated number of live treesa with damage on forest land, by species and type of damage, California, 2001–2005
California’s Forest Resources, 2001–2005
165
166
Total
10,799,408 224,623 1,963,054 59,500 22,923
5,133,505 177,176 922,284 35,973
6,501
—
—
—
—
280
—
—
78
—
127
208
753
1,718
—
—
—
259
—
253
824
836
14,964
66,790
1,255
13,502
25,891
16,657
29,665
24,881
11,539
85,352
933
75
883
12,747
19,811
89
74
222
225
1,062
780
3,831 1,584
97,443 13,674
306
305
5,596 2,627
36,204 6,726
3,300 1,505
40,672 4,520
15,847 10,253
5,404 2,041
110,132 10,332
—
—
73
75
1,014
760
4,073 1,497
—
—
—
—
—
—
308
—
—
127
—
258
—
167
82
1,093
—
1,044
6,619
6,594 6,615
18,861 18,869 3,465
8,591
—
—
6,679
744
486
27,283 73,801 6,713
1,393
1,046
750
1,768
582
584
38,774 107,309 9,729
21,484 25,140 6,382
14,458 54,186 7,356
727
419
194
5,694
6,837 2,012
50,953 31,565 5,524
95,051 217,773 19,985
1,878
1,072
793
24,838 51,078 8,401
17,936
88
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
14
—
—
—
—
—
—
—
73
112,404
15,567
—
—
177
—
2,109
—
—
975
—
253
203
257
605
—
—
—
14
—
29,588
25,405
—
—
—
—
781
—
—
293
—
—
50
—
2,356
—
—
—
—
—
—
—
—
—
4,698
—
—
10,418
—
1,148
—
—
—
5,095
—
12
Thousand trees
—
—
—
—
817
—
—
3,534
—
709
—
97
165
5,653
555
—
Note: Data subject to sampling error; SE = Standard error; — = less than 500 trees were estimated.
a Includes live trees ≥1 inch diameter at breast height.
b Number of live trees ≥1 inch diameter at breast height with one or more types of damage recorded.
All species Hardwoods:
Ash spp. 6,848
Bigleaf maple 126,583
Bitter cherry 16,329
Black cottonwood 9,378
Blue oak 266,209
Boxelder 1,857
Buckeye spp. 1,981
California black oak 456,356
California buckeye 90,582
California live oak 120,265
California sycamore 1,529
California white oak 22,062
California-laurel 350,245
Canyon live oak 1,203,727
Cherry and plum spp. 2,736
Curl-leaf mountain 143,258
mahogany
Engelmann oak 367
Eucalyptus spp. 813
Fremont cottonwood 1,137
Golden chinquapin 39,306
Interior live oak 501,735
Mesquite 1,261
Oregon ash 19,920
Oregon white oak 150,674
Pacific dogwood 82,450
Pacific madrone 220,502
Quaking aspen 74,436
Red alder 51,569
Tanoak 1,117,293
Tasmanian bluegum 949
Walnut spp. 73
Western honey mesquite 1,390
White alder 29,145
Willow spp. 20,539
167,176
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
56,651
34,278
—
—
—
—
8,149
—
—
5,066
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7,583
—
—
5,828
—
426
—
796
—
6,430
—
—
31,421
5,646
—
—
25
324
162
—
—
261
120
—
—
—
203
—
—
—
—
—
—
—
—
—
93
—
—
857
—
163
—
—
—
1,199
—
2,562
189,363
152,285
22
—
354
—
20,742
—
1,151
3,190
722
11,531
2,030
645
21,973
—
—
—
156
—
—
3,268
—
197
9,560
799
—
16,294
3,483
11,865
221
383
7,898
33,815
—
1,664
750,255
68
222
658
—
76,354
306
5,355
28,190
2,719
32,558
5,248
4,183
87,698
—
73
1,014
3,729
—
6,594
16,389
—
633
59,971
551
582
82,654
23,480
48,282
419
5,863
26,850
178,079
—
47,410
7,864 1,389,151
5,547
—
—
—
3,605
1,027
—
152
484
—
14
—
—
—
—
—
—
—
—
—
—
—
—
326
—
—
1,119
—
—
—
—
—
2,375
517
50
52,945
1,473
—
—
—
—
—
—
—
—
—
89
—
102
885
—
—
—
—
—
—
—
—
—
—
—
—
250
—
—
—
—
—
—
—
147
105,944
14,423
—
—
—
—
—
98
9,300
—
1,248
—
—
—
228
—
—
—
—
220
—
—
—
—
82
—
—
178
93
154
—
—
237
2,584
Type of damage
Total number
Number of live
Physical
of live trees trees with damageb
Bark
Dwarf
Leafy
Foliage Stem Other damage
Root
Species
Total
SE
Total
SE
Animal beetles Cankers Defoliators mistletoe mistletoe diseases decay insects or defect disease Weather
Table 39—Estimated number of live treesa with damage on forest land, by species and type of damage, California, 2001–2005 (continued)
GENERAL TECHNICAL REPORT PNW-GTR-763
19,106
Total
7
21
7,879
31
1,024
99
7
927
452
60
55
1,012
49
149
1,444
1,349
39
695
636
17
2
1,514
194
1,223
222
Softwoods:
Bigcone Douglas-fir Bishop pine California mixed conifer Coulter pine Douglas-fir Foxtail/bristlecone pine Giant sequoia Jeffrey pine Juniper woodland Knobcone pine Limber pine Lodgepole pine Misc. western softwoods Mountain hemlock Pinyon/juniper woodland Ponderosa pine Port-Orford-cedar Red fir Redwood Sitka spruce Subalpine fir Western juniper Western white pine White fir Whitebark pine 280
7
15
210
15
96
31
7
87
72
26
23
91
22
35
113
105
17
75
84
13
2
112
39
101
42
10,194
7
7
4,307
4
420
99
—
403
97
20
55
828
12
122
728
531
32
489
272
4
—
747
131
707
172
251
7
7
176
4
65
31
—
59
32
15
23
84
12
32
82
70
16
64
56
3
—
84
31
78
38
79
—
—
7
—
26
—
—
13
—
—
—
7
—
—
12
6
—
—
—
—
—
8
—
—
—
127
—
—
38
—
—
—
—
15
—
—
—
13
—
—
—
23
—
6
—
—
—
6
—
26
—
237
—
—
80
—
2
—
—
8
—
—
2
57
—
—
20
—
—
21
11
—
—
—
8
28
—
12
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
12
—
Thousand acres
1,145
—
—
449
—
—
—
—
39
—
—
—
81
—
22
134
85
—
200
—
1
—
7
9
118
—
366
—
—
105
—
2
—
—
—
35
—
—
—
—
—
29
3
—
—
—
—
—
161
—
30
—
227
—
—
92
—
—
—
—
—
—
—
—
27
—
18
—
—
—
24
—
—
—
51
—
14
—
418
—
—
137
—
61
15
—
—
—
—
8
1
—
7
34
2
8
8
12
—
—
106
—
20
—
8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8
—
—
—
6,732
7
—
2,649
4
228
99
—
296
62
6
35
660
—
103
554
300
24
263
206
2
—
481
114
507
132
252
—
—
133
—
—
—
—
27
—
—
—
7
—
—
—
40
—
14
—
—
—
—
—
31
—
221
—
—
36
—
—
21
—
—
—
—
13
56
—
7
26
—
—
7
—
—
—
20
—
—
35
Type of damage
Total Forest land
a
Physical
with damage
forest land
Bark
Dwarf
Leafy
Foliage Stem Other damage
Root
Species
Total
SE
Total
SE
Animal beetles Cankers Defoliators mistletoe mistletoe diseases decay insects or defect disease Weather
Table 40—Estimated area of forest land with more than 25 percent of basal area damaged, by forest type and type of damage, California, 2001–2005
California’s Forest Resources, 2001–2005
167
168
33,238
284
79
293
24
25
146
120
62
54
148
91
20
1
4
12
18
73
103
25
63
12
77
54
58
43
125
18,293
183
7,916
32
19
1,566
838
143
161
1,416
693
31
—
—
11
3
362
666
31
287
—
379
194
214
89
781
325
42
253
17
9
124
92
38
43
116
76
20
—
—
12
3
62
85
18
52
—
62
46
48
32
90
160
7
74
17
—
10
—
—
—
8
—
—
—
—
—
—
7
—
—
5
—
—
—
—
27
—
175
—
48
—
—
25
—
—
—
—
—
—
—
—
—
—
14
—
—
9
—
—
—
—
—
—
Note: Data subject to sampling error; SE = standard error; — = less than 500 acres were estimated.
a Acres of forest land with >25 percent of tree basal area with one or more type of recorded damage.
All forest types
Nonstocked 751
13,381
Total
80
82
2,419
1,513
381
278
2,450
971
32
2
4
14
44
520
1,004
56
422
14
613
293
317
186
1,687
Hardwoods:
Aspen Bigleaf maple Blue oak California black oak California laurel California white oak
Canyon live oak Coast live oak Cottonwood Cottonwood/willow Eucalyptus Evergreen oak woodland Giant chinquapin Gray pine Interior live oak Mesquite woodland Mountain brush woodland Oregon ash Oregon white oak Other hardwoods Pacific madrone Red alder Tanoak 342
—
105
—
—
34
38
—
—
8
9
—
—
—
—
—
—
6
—
—
—
3
7
—
—
—
110
—
98
—
—
54
—
—
—
20
24
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Thousand acres
1,341
6
189
—
—
43
12
—
3
17
—
—
—
—
—
—
96
7
—
—
—
—
—
11
—
—
881
25
489
—
—
236
55
—
25
64
12
—
—
—
—
—
—
53
—
6
—
27
11
—
—
—
258
—
31
—
—
—
3
—
—
6
3
—
—
—
—
—
—
—
—
8
—
—
11
—
—
—
1,936
14
1,504
10
15
264
141
14
24
336
221
25
—
—
—
—
39
148
—
7
—
81
30
28
—
122
38
17
14
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
14
—
—
—
—
12,480
128
5,621
22
7
1,108
554
74
114
964
628
31
—
—
11
3
212
452
31
269
—
280
153
171
77
460
252
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
259
—
38
13
—
—
—
—
—
14
—
—
—
—
—
—
—
—
—
—
—
—
11
—
—
—
Type of damage
Total Forest land
Physical
with damagea
forest land
Bark
Dwarf
Leafy
Foliage Stem Other damage
Root
Species
Total
SE
Total
SE
Animal beetles Cankers Defoliators mistletoe mistletoe diseases decay insects or defect disease Weather
Table 40—Estimated area of forest land with more than 25 percent of basal area damaged, by forest type and type of damage, California, 2001–2005
(continued)
GENERAL TECHNICAL REPORT PNW-GTR-763
Total
Softwoods:
Bigcone Douglas-fir Bishop pine Brewer spruce Bristlecone pine California juniper California nutmeg California red fir Coulter pine Cypress Douglas-fir Engelmann spruce Foxtail pine Giant sequoia Grand fir Gray pine Incense-cedar Jeffrey pine Knobcone pine Limber pine Lodgepole pine Monterey cypress Monterey pine Mountain hemlock Noble fir Pacific silver fir Pacific yew Ponderosa pine Port-Orford-cedar Redwood Sargent’s cypress Shasta red fir Singleleaf pinyon Sitka spruce Subalpine fir Sugar pine Utah juniper Washoe pine Western hemlock Western juniper Western redcedar Western white pine White fir Whitebark pine 23,411
8,817
15,971
60,976
36,171
5,590
3,083,261
45,859
1,060
5,574,662
908
119,219
—
5,792
280,859
1,518,218
1,626,917
57,128
57,842
1,601,808
960
9,279
267,868
3,775
2,071
1,743
2,345,070
81,294
2,547,631
—
168,292
160,461
50,415
—
1,254,084
20,047
353
53,276
213,306
47,014
415,897
4,155,289
50,012
8,926
6,778
8,425
32,046
10,825
2,822
331,155
17,039
1,064
336,442
883
48,196
—
5,587
44,132
115,719
117,292
18,014
21,177
180,994
980
6,321
80,215
3,614
2,155
680
164,256
38,883
664,250
—
64,781
23,505
30,832
—
109,568
7,500
368
21,705
24,316
34,551
52,925
266,590
12,594
79,636,327 1,965,533 25,972,608 932,317
54,432
19,166
45,343
35,836
31,314
14,329
76,296
38,320
152,400
37,414
14,162
6,187
6,660,989 621,844
117,876 34,463
9,319
7,274
22,294,535 898,634
12,242
10,029
196,897
76,074
3,586
3,580
70,836
27,730
657,617
68,311
4,237,392 241,895
4,597,608 291,638
138,001
32,057
101,516
37,693
3,669,155 350,158
3,130
3,196
16,946
11,698
656,077 163,383
31,525 22,846
2,071
2,155
9,211
2,733
8,577,267 430,669
178,268
81,039
7,210,577 1,296,103
968
890
690,488 214,524
455,929 48,253
134,418
66,101
2,566
2,574
3,826,002 234,219
35,264
9,447
3,801
3,954
174,651
67,051
563,502
47,720
58,371
43,291
964,865 104,761
12,781,608 632,054
117,304 26,696
368,466
—
—
—
810
311
—
5,344
—
—
84,260
—
—
—
—
12,451
13,545
25,952
1,114
—
22,163
—
—
3,666
—
—
390
33,019
4,614
118,081
—
—
319
129
—
2,537
1,037
—
6,068
8,295
—
4,609
15,773
3,977
473
—
4,139
—
240
—
250,656
—
—
283,160
—
3,759
—
—
5,148
10,697
12,146
9,156
779
148,820
—
—
17,660
—
—
—
54,950
—
46,313
—
—
3,535
—
—
175,783
—
—
5,476
—
—
33,851
207,570
—
606,250 1,274,310
—
—
—
—
—
—
83,067
3,428
—
23,728
—
—
—
—
40,708
3,350
71,526
7,170
—
50,832
—
—
983
—
—
—
138,103
—
—
—
—
5,058
—
—
14,998
—
—
4,223
—
—
7,987
151,089
—
102,515
—
1,041
—
—
—
—
2,178
—
—
8,232
—
—
—
—
—
366
2,968
—
—
—
—
—
—
—
—
—
3,477
—
—
—
—
—
—
—
3,085
—
—
—
—
—
877
81,331
—
Thousand acres
3,355,892 480,493
—
—
—
—
—
—
—
—
— 15,560
—
—
1,129,692
—
3,776
—
—
—
326,300
—
908
—
—
—
—
—
—
—
85,498
—
— 257,455
255,064
—
10,667
—
—
—
101,767
—
476
—
—
—
28,058
—
—
—
—
—
—
—
402,556
—
—
—
23,517
—
—
—
14,835
—
33,586
—
29,377
—
—
—
78,300
—
—
3,525
—
—
17,180
—
1,790 49,053
—
—
10,627
—
800,878 154,900
—
—
16,939
—
—
—
11,000
—
41,701
—
23,698
—
3,822
—
1,882,633 84,103
30,027 11,313
1,060
—
3,483,425 36,925
83
—
113,093
—
—
—
5,792
—
132,231
—
1,159,563 21,569
1,241,477 57,981
30,632
1,260
54,665
—
1,266,116
5,959
718
—
9,279
—
175,010
—
1,107
—
2,071
—
1,230
—
1,680,765 99,440
72,170
—
2,295,273
2,906
—
—
108,498
—
123,161
—
20,909
—
—
—
951,016
9,182
16,894
—
353
—
37,256
—
125,689
95
44,112
—
320,541
207
2,779,879 351,696
42,162
—
3,515
21,138
449
—
57,122
—
—
27,176
—
17,347
—
—
347
12,241
44,018
—
6,370
36,125
—
—
7,890
2,668
—
—
16,720
18
11,823
—
314
1,694
—
—
33,003
—
—
—
5,689
—
10,623
68,718
5,878
—
Root
disease Weather
849,411 3,380,922 36,157 18,313,827 682,635
—
7,581
—
—
— 7,776
—
1,408
—
—
23,028
—
—
240
—
—
4,311
—
257,292 122,704 12,606
—
743
—
—
—
—
72,063 1,698,788 7,712
—
—
—
—
8,024
—
—
—
—
—
—
—
11,759
32,162
—
115,487 180,869
700
93,426
83,747 2,084
—
2,358
—
—
2,113
—
92,713 119,889
258
—
128
—
—
4,720
—
53,955
15,718
—
—
—
—
—
—
—
—
371
—
45,005 126,704 3,636
—
31,065
872
7,450 322,081
—
—
—
—
20,155
43,973 2,573
68
8,380
—
—
3,599
—
—
—
—
23,642 125,089
—
—
394
—
—
—
—
—
6,839
—
18,011
30,237 2,407
—
14,981
—
11,211
75,821
—
27,173 276,849 3,311
—
6,006
—
Total
Gross volume
Type of damage
gross volume of trees
a
b
Physical
of live trees with damage
Bark
Dwarf
Leafy Foliage Stem
Other damage
Species
Total
SE
Total
SE
Animal beetles Cankers Defoliators mistletoe mistletoe diseases decay insects or defect
Table 41—Estimated gross volume of live treesa with damage on forest land, by species and type of damage, California, 2001–2005
390,885
California’s Forest Resources, 2001–2005
169
170
19,842,740
99,479,067 2,076,190 33,947,336 979,226
7,974,727 279,832
10,091
6,399
2,010
2,037
78,581
57,743
48,506 16,764
350,543 43,343
16,550
9,183
213,507 37,564
3,760
2,159
899,310 94,988
23,078
8,377
72,766 20,113
615
612
1,105,090 108,840
—
—
306
313
7,180
5,538
35,847 13,725
444
445
150,229 26,108
—
—
33,245 15,156
722,761 62,355
16,557 14,244
—
—
1,467,227 98,494
58,558 11,485
784,586 93,154
25,976 10,027
120,362
29,911
238,386 50,851
1,374,558 109,664
114,097 19,661
442,208
73,742
—
—
—
—
1,167
—
444
—
1,752
4,085
13,032
—
7,677
—
—
—
3,639
—
—
—
—
6,695
—
—
10,595
—
2,735
—
5,818
499
10,439
5,162
132,986
—
—
11,153
—
1,823
—
3,837
—
6,665
285
1,967
—
9,579
—
—
—
2,319
—
—
—
—
11,438
—
—
45,399
—
10,659
—
103
847
26,912
—
608,743 1,407,296
2,493
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2,126
—
—
—
—
—
—
368
187,563
85,048
—
—
—
—
384
—
1,155
—
—
508
—
—
2,309
—
—
—
—
—
—
—
—
35,626
—
—
27,867
—
8,582
—
—
—
8,062
556
Thousand acres
Note: Data subject to sampling error; SE = Standard error; — = less than 500 cubic feet were estimated.
a Includes the gross volume of live trees ≥5 inches diameter at breast height.
b Includes the gross volume of live trees ≥5 inches diameter at breast height with one or more types of damage recorded.
All species
575,606
10,042
11,014
66,071
50,759
91,772
20,475
72,969
3,969
162,072
25,017
100,667
612
292,515
3,011
313
5,946
31,461
15,778
10,869
89,914
140,615
747,510
34,111
591,830
9,145
1,867,729
63,743
448,688
615
3,614,293
4,159
306
8,681
121,735
Total
2,160
61,895
241
34,516
112,636
28,804
251
202,214
13,832
148,142
25,978
70,288
98,594
217,938
23,166
2,505
465,395
236
73,630
1,599,438
32,382
250
3,595,773
78,127
1,433,726
68,145
365,511
751,740
3,442,586
163,575
Hardwoods:
Ash spp. Bigleaf maple Bitter cherry Black cottonwood Blue oak Boxelder Buckeye spp. California black oak California buckeye California live oak California sycamore California white oak California-laurel Canyon live oak Curl-leaf mountain mahogany
Engelmann oak Eucalyptus spp. Fremont cottonwood Golden chinquapin Interior live oak Oregon ash Oregon white oak Pacific dogwood Pacific madrone Quaking aspen Red alder Screwbean mesquite Tanoak Tasmanian bluegum Walnut spp. Western honey mesquite White alder —
—
—
—
23,729
—
53,482
—
—
—
—
—
—
—
—
—
—
3,355,892 950,912
— 470,420
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
— 104,686
—
—
—
—
— 186,735
—
—
— 23,036
—
—
— 22,441
—
—
— 56,310
—
—
5,892
—
29,272
11,179
139,887
6,085
60,855
706
383,863
5,493
12,967
—
475,540
—
—
—
4,057
—
64,037
—
4,779
207,167
14,394
—
515,962
14,323
273,142
20,769
21,255
123,520
488,157
3,671
—
—
—
—
—
991
3,744
—
7,949
—
—
—
—
—
—
—
—
—
—
—
—
2,757
—
—
2,991
—
—
—
—
—
9,650
236
5,502,332
4,198
2,010
39,834
39,137
239,541
13,461
147,438
3,760
607,672
16,228
41,244
615
717,361
—
306
7,180
28,434
444
104,759
—
29,260
498,045
4,021
—
936,510
52,462
639,408
25,976
80,786
183,102
935,318
103,823
36,525
—
—
—
—
—
—
—
—
821
—
11,735
—
11,026
—
—
—
—
—
—
—
—
—
—
—
12,885
—
—
—
—
—
—
58
424,268
33,383
—
—
—
—
—
—
—
—
4,225
320
—
—
3,719
—
—
—
612
—
—
—
—
2,525
—
—
3,585
315
4,932
—
—
2,456
10,398
296
Root
disease Weather
884,508 6,267,895 64,473 23,816,159 719,160
35,098 2,886,973 28,316
—
—
5,592
—
3,736
—
2,154
158
—
—
—
—
704
—
—
—
—
—
—
—
—
2,393
—
—
6,037
—
3,773
—
—
—
3,229
7,322
Total
Gross volume
Type of damage
gross volume of trees
a
b
Physical
of live trees with damage
Bark
Dwarf
Leafy Foliage Stem
Other damage
Species
Total
SE
Total
SE
Animal beetles Cankers Defoliators mistletoe mistletoe diseases decay insects or defect
Table 41—Estimated gross volume of live treesa with damage on forest land, by species and type of damage, California, 2001–2005 (continued)
GENERAL TECHNICAL REPORT PNW-GTR-763
California’s Forest Resources, 2001–2005
Table 42—Estimated number of live trees with damage, acres of forest land with
greater than 25 percent of basal area damaged, and gross volume of live trees
with damage, by survey unit and ownership group, California, 2001–2005
Survey unit and
ownership group
Number of live
trees with damagea
Total
SE
Thousand trees
Acres of forest land
with damageb Total
SE
Thousand acres
Gross volume of live
trees with damagec
Total
SE
Thousand cubic feet
North Coast:
Public Private 79,484
215,107
9,645
15,308
592
1,598
68
116
2,846,484
3,430,270
649,651
277,886
Total 294,591
17,995
2,190
133
6,276,754
703,661
North Interior:
Public Private 354,980
185,249
28,372
17,157
3,354
1,577
130
116
7,147,368
1,767,519
312,224
142,744
540,230
33,151
4,930
174
8,914,887
343,079
Sacramento:
Public Private 257,945
210,952
21,483
29,801
1,929
1,580
102
114
5,025,768
2,003,438
276,211
152,050
Total 468,897
36,690
3,509
151
7,029,206
314,956
Central Coast:
Public Private 71,005
74,842
11,416
9,869
774
827
83
87
1,169,987
1,201,676
275,628
219,181
Total 145,847
14,890
1,600
117
2,371,663
350,626
San Joaquin:
Public Private 328,674
94,678
21,988
11,252
3,716
1,397
143
114
7,567,997
1,132,089
406,760
131,527
Total 423,353
24,648
5,113
182
8,700,086
427,041
Southern:
Public Private 66,658
23,479
10,383
10,633
819
131
82
38
575,917
78,823
93,181
29,684
90,137
14,860
951
91
654,740
97,785
Total, California:
Public Private 1,158,748
804,307
44,289
40,424
11,184
7,108
236
233
24,333,521
9,613,815
895,930
411,912
1,963,054
59,500
18,293
325
33,947,336
979,226
Total Total Total Note: Data subject to sampling error; SE = standard error.
a Number of live trees ≥1 inch diameter at breast height.
b Number of forest land acres with more than 25 percent of basal area damaged.
c Gross volume of live trees ≥5 inches diameter at breast height.
171
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 43—Estimated area of forest land covered by selected nonnative
vascular plant species, by life form and species, California, 2001–2005
Plant life form
Scientific name
Common name
Area covered
Total
SE
Acres
Shrubs:
Cytisus scoparius
Hedera helix
Ilex aquifolium
Rubus discolor
Rubus laciniatus
Scotch broom
English ivy
English holly
Himalayan blackberry
cutleaf blackberry
3,000
300
200
34,400
1,400
1,400
300
200
9,100
1,000
Forbs:
Centaurea solstitialis
Cirsium
Cirsium arvense
Cirsium vulgare
Digitalis purpurea
Hypericum perforatum
Hypochaeris radicata
Torilis arvensis
yellow star-thistle
thistle spp.
Canada thistle
bull thistle
purple foxglove
common St. John’s wort
hairy cat’s ear
spreading hedgeparsley
32,300
21,800
1,000
2,000
100
1,800
500
23,800
8,100
3,600
800
800
100
800
200
6,300
Grasses:
Aira caryophyllea
Avena barbata
Avena fatua
Bromus diandrus
Bromus hordeaceus
Bromus madritensis
Bromus tectorum
Cynosurus echinatus
Dactylis glomerata
Holcus lanatus
Taeniatherum caput-medusae
silver hairgrass
slender oat
wild oat
ripgut brome
soft brome
compact brome
cheatgrass
bristly dogstail grass
orchardgrass
common velvetgrass
medusahead
14,200
27,300
50,000
47,100
78,800
13,400
144,400
96,000
1,800
100
63,800
4,000
9,700
12,500
11,600
18,300
6,100
17,400
21,200
1,300
100
14,700
Note: Estimates are likely low for most grasses and some forbs because of short flowering seasons and
difficulty of species identification. Data subject to sampling error; SE = standard error.
172
California’s Forest Resources, 2001–2005
Table 44—Summary of lichen community indicator species richness on forest land, by location, California,
1998–2001, 2003
Location
Parameter
California
Greater
Central Valley
Greater
Sierra Nevada
Northwest
Coasta
Number of plotsb
288
76
133
68
Number of plots by lichen species richness category:
0–6 species 7–15 species
16–25 species
>25 species
61
141
62
24
7
41
19
9
43
67
18
5
3
31
24
10
12
13
9
16
Range of species richness per plot (low-high)
0–39
2–31
0–34
1–39
Average lichen species richness per plot (alpha diversity)
12.59
14.38
9.87
17.21
Standard deviation of lichen species richness per plot
7.97
6.82
7.06
8.05
16.52
9.11
16.92
9.36
208
131
167
161
Median
Species turnover rate (beta
diversity)c
Total number of species per area (gamma diversity)
a
Coastal area bordering the greater Central Valley and covering northwestern California.
Plot totals do not include quality assurance surveys.
c Beta diversity is calculated as gamma diversity divided by alpha diversity.
b
Table 45—Summary of air quality on forest land in the greater Central Valley as indicated by
the Lichen Community Indicator, California, 1998–2001, 2003
Parameter
Number of plots surveyed c
Number of plots by air quality index
1 (Worst) : -0.99 to 0.13 2: 0.13 to 0.55
3: 0.55 to 0.85
4 (Best): 0.85 to 1.58 Air quality index extremes
category:d
Greater
Central Valley
On-framea
Off-frameb
108
76
32
45
23
22
18
19
19
20
18
26
4
2
0
-0.86 to 1.58
-0.99 to 0.70
-0.99 to 1.58
Average score
0.28
0.52
-0.27
Standard deviation
0.61
0.50
0.46
a
On-frame plots are on the Forest Inventory and Analysis sampling grid.
Off-frame plots were located in cities, agricultural areas, and/or near air quality monitors.
c Plot totals do not include quality assurance surveys or plots without lichens present.
d Categories are based on the data quartiles for on-frame data.
b
173
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 46—Summary of air quality on forest land in the greater Sierra Nevada as indicated by
the Lichen Community Indicator, California, 1998–2001, 2003
Parameter
Greater
Sierra Nevada
On-framea
Off-frameb
146
122
24
35
31
33
47
31
30
30
31
4
1
3
16
Number of plots surveyed c
Number of plots by air quality index
1 (Best): -43.36 to -15.88
2: -15.88 to -8.22
3: -8.22 to 4.35
4 (Worst): 4.35 to 66.49
category:d
Air quality index extremes
-43.36 to 66.49
-43.36 to 66.49
-32.38 to 41.61
Average score
-2.77
-5.13
10.27
Standard deviation
19.28
18.32
19.60
a
On-frame plots are on the Forest Inventory and Analysis sampling grid.
Off-frame plots were located in cities, agricultural areas, and/or near air quality monitors.
c Plot totals do not include quality assurance surveys or plots without lichens present.
d
Categories are based on the data quartiles for on-frame data.
b
Table 47—Summary of climate on forest land as indicated by the Lichen Community Indicator, derived
from the temperature gradient of Jovan and McCune’s (2004) model, California, 1998–2001, 2003
Parameter
Total
Number of plots surveyed c
Number of plots by climate index category:d
Warmest (-2.59 to -1.04)
Warm (-1.04 to 0.01)
Cool (0.01 to 0.87)
Coolest (0.87 to 2.14)
Climate index extremes
Average score
Standard deviation
a
Greater
Central Valleya
Greater
Sierra Nevadaa
Northwest
Coastb
264
76
121
67
67
65
66
66
44
25
5
2
6
15
43
57
17
25
18
7
-2.59 to 2.14
-2.59 to 2.10
-2.07 to 2.14
-2.46 to 1.27
-0.02
-0.96
0.73
-0.32
1.13
0.79
0.88
0.92
The greater Central Valley (GCV) and greater Sierra Nevada are mapped in Volume 1, figures 57 and 58.
The Northwest Coast borders the GCV and covers northwestern California.
c Plot totals do not include quality assurance surveys or plots without lichens present.
d Categories are based on data quartiles.
b
174
California’s Forest Resources, 2001–2005
Table 48—Summary of climate on forest land as indicated by the Lichen Community Indicator,
derived from the moisture gradient of Jovan and McCune’s (2004) model, California, 1998–2001, 2003
Parameter
Total
Greater
Central Valleya
Greater
Sierra Nevadaa
Northwest
Coastb
264
76
121
67
66
66
68
64
5
11
25
35
16
39
40
26
45
16
3
3
-2.28 to 2.22
-1.17 to 2.22
-2.20 to 2.13
-2.28 to 1.57
Average score
0.08
0.77
0.21
-0.92
Standard deviation
1.04
0.83
0.82
0.83
Number of plots surveyed c
Number of plots by climate index category:d
Wettest (-2.28 to -0.71)
Wet (-0.71 to 0.13)
Dry (0.13 to 0.89)
Driest (0.89 to 2.22)
Climate index extremes
a
The greater Central Valley (GCV) and greater Sierra Nevada are mapped in Volume 1, figures 57 and 58.
The Northwest Coast borders the GCV and covers northwestern California.
c Plot totals do not include quality assurance surveys or plots without lichens present.
d
Categories are based on data quartiles.
b
175
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 49—Ozone injury summary information from ozone biomonitoring plots, by year, California, 2000–2005
Ozone biomonitoring plots
Number of plots
Number of plots with injury
Number of plots by biosite index
categorya (percentage of plots):
0 to 4.9 (least injured)
5.0 to 14.9
15 to 24.9
>25 (most injured)
Year of monitoring
2000
2001
22
6
18 (81.8)
1 (4.5)
0 (0)
3 (13.6)
2002
2003
29
61
65
65
65
307
11
20
16
22
24
99
24 (82.8) 52 (85.2)
2 (6.9)
7 (11.5)
1 (3.4)
1 (1.6)
2 (6.9)
1 (1.6)
56 (86.2)
7 (10.8)
1 (1.5)
1 (1.5)
2004
2005
57 (87.7) 48 (73.8)
3 (4.6)
2 (3.1)
3 (4.6)
5 (7.7)
2 (3.1) 10 (15.4)
All years
255 (83.1)
22 (7.2)
11 (3.6)
19 (6.2)
Average biosite index score
6.7
3.4
2.2
2.1
2.5
9.3
4.4
Average number of species per plot
1.8
2.1
2.2
2.3
2.3
2.4
2.1
1,078
1,492
3,865
4,295
4,370
4,177
19,277
98
114
207
119
165
254
957
100
43
161
120
0
325
159
0
0
0
0
170
0
133
13
330
187
0
434
166
0
0
25
0
204
0
452
0
410
599
30
984
237
112
30
100
254
627
30
499
0
480
600
30
1,016
288
120
30
96
270
776
90
407
0
566
632
22
1,112
322
120
47
60
328
724
30
304
0
563
684
30
1,075
313
90
30
90
262
706
30
1,895
56
2,510
2,822
112
4,946
1,485
442
137
371
1,114
3,207
180
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
75.7
22.1
2
0.2
Number of plants evaluated
Number of plants injured
Number of plants evaluated by species:
Blue elderberry
California black oak
Jeffrey pine
Mugwort
Pacific ninebark
Ponderosa pine
Quaking aspen
Red alder
Red elderberry
Scouler’s willow
Skunkbush
Snowberry
Western wormwood
Percentage of forest land by biosite
index categoryb
0 to 4.9 (least injured)
5.0 to 14.9
15 to 24.9
>25 (most injured)
Note: — = no value calculated.
a The biosite index is based on the average injury score (amount × severity) for each species averaged across all species on the plot.
Biosite categories represent a relative measure of tree-level response to ambient ozone exposure.
b Percentage of forest land is estimated after interpolating the biosite values (2000–2005) to generate a biological response
surface across the landscape.
176
California’s Forest Resources, 2001–2005
Table 50—Total acres of forest land with a forest fire incident, by year and ecosection group, California,
1995–2004
Ecosection group
Total Year
SE
West/
Central Sierra Total
SE
Total
212,069 44,344
116,046 29,746
105,732 30,625
116,317 30,225
278,900 48,628
264,432 50,648
263,680 53,974
344,993 75,600
284,307 91,618
143,439 101,407
72,832
51,710
19,998
55,764
103,211
86,780
131,070
15,669
125,234
—
26,426
20,496
14,476
21,909
27,987
30,082
37,058
15,669
62,614
—
7,807
1,741
32,181
22,675
26,013
22,462
—
—
—
—
Average 212,992 19,010
66,227
9,473
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
Total
Northern
Interior SE
Total
SE
Acres
7,807
110,023 31,667
1,741
48,224 18,978
16,674
49,688 20,893
12,193
22,264 12,884
14,150
107,678 31,894
13,110
101,327 29,975
—
122,123 37,926
—
254,604 63,940
—
80,452 47,138
—
143,439 101,407
11,288 2,934
103,982 14,732
North
Coast Total
SE
12,604 12,604
—
—
—
—
—
—
12,604 12,604
—
—
—
—
—
—
31,916 31,916
—
—
5,712 3,655
Southern
California
Total
SE
8,803
14,371
3,866
15,614
29,394
53,862
10,487
74,720
46,705
—
7,036
10,198
3,866
11,039
14,741
24,408
10,487
37,288
35,174
—
25,782 6,192
Note: Data subject to sampling error; SE = standard error; — = less than 0.5 acre was estimated.
177
178
44,728
Total 3,883
—
—
3,598
1,950
30,804
—
3,078
713
701
Softwoods:
Douglas-fir Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sugar pine True fir Western hemlock Western white pine 19,567
1,745
—
—
2,454
1,168
17,096
—
2,249
679
670
SE
Total
79,408
Species group
1,390,463
Current gross
annual growth Total 34,656
10,548
5,258
5,417
20,521
55,206
7,132
30,996
5,600
5,303
410,507
73,232
15,488
24,039
240,960
207,415
51,211
350,663
8,504
8,445
Softwoods:
Douglas-fir Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sugar pine True fir Western hemlock Western white pine 97,031
36,487
27,879
22,521
90,770
47,202
41,406
110,361
4,144
17,512
1,200,669
-5,458
7,905
-5,076
—
5,714
-13,389
4,110
—
-3,311
-2,769
1,358
Total
23,093
5,132
4,856
—
4,245
15,159
8,562
—
4,751
2,262
1,299
SE
Average annual
net change 197,737
50,187
-4,022
5,076
—
-2,116
15,339
26,694
—
6,389
3,482
-657
26,663
3,986
4,856
—
2,348
15,570
12,931
—
4,305
2,473
628
39,023
19,966
5,591
4,186
2,393
13,920
—
6,171
27,774
—
5,260
SE
Total
349,728
120,540
25,093
4,186
1,661
45,245
81,717
9,300
56,681
5,304
—
43,747
24,780
8,630
3,180
1,373
9,811
24,126
3,046
11,698
5,046
—
SE
Current gross
annual growth 708,462
192,351
41,183
11,098
6,742
140,881
—
37,605
270,873
—
7,727
Thousand cubic feet
SE
Average annual
removal and mortality Total
Total
Current gross
annual growth Thousand cubic feet
SE
87,787 92,083
22,096 36,652
41,177 26,498
30,413 23,355
280,794 91,405
187,870 66,176
103,430 41,905
467,306 108,317
7,820
3,861
-28,025 16,652
Total
Average annual
removal and mortality State and local government
189,794 194,246
322,719
51,136
-25,690
-6,374
-39,834
19,545
-52,219
-116,643
684
36,470
SE
Total
Species group
Total
Average annual
net change Current gross
annual growth SE
All owners
SE
-5,929
24,514
2,197
3,619
-313
-27,332
24,281
-16,451
-20,074
3,632
—
Total
166,787
73,788
34,152
26,435
22,588
85,872
—
38,676
104,248
—
16,640
SE
65,842
355,657
96,026
22,897
568
1,975
72,577
57,436
25,751
76,755
1,672
—
Total
63,774
31,035
9,158
1,054
1,842
22,029
32,398
10,289
25,719
1,590
—
SE
Average annual
removal and mortality
591,420
-5,413
-20,886
39,634
34,769
156,706
—
60,858
353,106
—
-27,354
Total
Average annual
removal and mortality
32,300
9,348
2,505
529
22,548
36,259
10,755
24,719
3,456
—
SE
Average annual
net change Corporate private
117,042 168,537
197,764 77,366
62,069 33,819
-28,536 27,725
-28,027 21,049
-15,825 84,800
—
—
-23,253 38,237
-82,232 106,643
—
—
35,081 17,464
Total
Average annual
net change National forest
Table 51—Estimated gross growth, net change, removals, and mortality of growing stock for softwood species on timberland, by species
group and owner, California, 2001–2005
GENERAL TECHNICAL REPORT PNW-GTR-763
California’s Forest Resources, 2001–2005
Table 51—Estimated gross growth, net change, removals, and mortality of growing
stock for softwood species on timberland, by species group and owner, California,
2001–2005 (continued)
Noncorporate private
Current gross
annual growth Average annual
net change Species group
Total
Total
Softwoods:
Douglas-fir Incense-cedar Lodgepole pine Other western softwoods Ponderosa and Jeffrey pines Redwood Sugar pine True fir Western hemlock Western white pine Total SE
SE
Average annual
removal and mortality
Total
SE
Thousand cubic feet
93,732
6,956
203
12,037
52,884
94,894
4,306
20,030
2,486
17
15,275
2,389
130
3,968
11,651
47,118
1,887
7,142
2,366
16
92,536
-8,054
-772
16,253
16,713
-8,845
-12,516
-11,026
-179
31
48,713
8,767
1,500
6,771
17,639
28,974
11,701
13,211
171
29
1,195
15,009
976
-4,215
36,171
103,740
16,822
31,056
2,666
-14
45,222
8,421
1,480
5,130
16,195
56,558
12,439
13,883
2,536
13
287,545
52,562
84,140
67,023
203,405
81,492
Note: Data subject to sampling error; SE = standard error; — = less than 500 cubic feet were estimated.
179
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 52—Total roundwood output by product, species group, and source of material,
California, 2000
Growing-stock trees
Product and species group
Sawtimber
Poletimber
Other sources
All sources
Saw logs:
Softwoods Hardwoods
364,162
2
1,350
—
21,331
—
386,843
2
Total
364,164
1,350
21,331
386,845
Veneer logs:
Softwoods Hardwoods
29,433
377
109
1
2,065
4
31,608
382
Total
29,810
111
2,069
31,990
Pulpwood:
Softwoods Hardwoods
—
2,367
—
9
—
24
—
2,400
2,367
9
24
2,400
Total
Thousand cubic feet
Poles and posts:
Softwoods Hardwoods
401
0
—
—
4
—
405
—
401
—
4
405
Other miscellaneous:
Softwoods Hardwoods
123
0
—
—
1
—
124
—
123
—
1
124
Total
Total
Total industrial products:
Softwoods Hardwoods
394,118
2,746
1,460
10
23,402
28
418,980
2,784
Total
396,864
1,470
23,430
421,764
Fuelwood:
Softwoods Hardwoods
45,953
0
170
10
115,086
44,848
161,209
44,858
Total
45,953
180
159,934
206,067
All products:
Softwoods Hardwoods
440,071
2,746
1,630
20
138,488
44,877
580,189
47,643
442,817
1,650
183,365
627,831
Total
Note: Data subject to sampling error; excludes removals from precommercial thinnings; — = less than 500 cubic feet found.
180
California’s Forest Resources, 2001–2005
Table 53—Volume of timber removals by type of removal, source of material, and species group,
California, 2000
Source of material
Growing stock
Removal type
Softwoods Hardwoods
Total
Other sources
All sources
Softwoods Hardwoods Total
Softwoods Hardwoods Total
Roundwood products:
Saw logs
365,512
Veneer logs
29,542
Pulpwood
—
Fuelwood
46,123
Posts, poles, and pilings
401
Miscellaneous products
123
2
379
2,376
10
—
—
365,514
29,921
2,376
46,133
401
123
21,331
2,065
—
115,086
4
1
—
4
24
44,848
—
—
21,331
2,069
24
159,935
4
1
386,843
31,608
—
161,209
405
124
2
382
2,400
44,858
—
—
386,845
31,900
2,400
206,067
405
124
441,701
2,766
444,467
138,488
44,877
183,365
580,189
47,643
627,831
24,592
171
24,764
118,297
778
119,074
142,889
949
143,838
466,293
2,937
469,231
256,785
45,654
302,439
723,078
48,591
771,670
Total Logging residues
All removals
Thousand cubic feet
Note: Data subject to sampling error; excludes removals from precommercial thinnings; — = less than 500 cubic feet found.
181
GENERAL TECHNICAL REPORT PNW-GTR-763
Table 54—Estimated area of forest land covered by vascular plant nontimber
forest products, by plant group and species, California, 2001–2005
Plant group and scientific name
Common name
Total
SE
Tree seedlings and saplings:
Abies magnifica
Abies procera
Calocedrus decurrens
Crataegus spp.
Juniperus occidentalis
Pseudotsuga menziesii
Taxus brevifolia
Thuja plicata
Acres
California red fir
noble fir
incense-cedar
hawthorn species
western juniper
Douglas-fir
Pacific yew
western redcedar
46,700
100
99,100
1,000
16,900
128,100
2,800
600
4,600
100
5,900
1,000
2,000
6,500
1,000
400
Shrubs:
Acer circinatum
Arctostaphylos columbiana
Arctostaphylos nevadensis
Arctostaphylos patula
Arctostaphylos spp.
Arctostaphylos uva-ursi
Arctostaphylos viscida
Ceanothus velutinus
Chimaphila umbellata
Cytisus scoparius
Eriodictyon californicum
Frangula purshiana
Gaultheria shallon
Mahonia aquifolium
Mahonia nervosa
Mahonia repens
Paxistima myrsinites
Ribes spp.
Rosa spp.
Sambucus nigra
Sambucus racemosa
Vaccinium membranaceum
Vaccinium ovatum
vine maple
hairy manzanita
pinemat manzanita
greenleaf manzanita
manzanita species
kinnikinnick
sticky whiteleaf manzanita
snowbrush ceanothus
pipsissewa
Scotch broom
California yerba santa
Pursh’s buckthorn
salal
Oregon grape
dwarf Oregon grape
creeping barberry
Oregon boxleaf
currant spp.
rose spp.
European black elderberry
red elderberry
thinleaf huckleberry
California huckleberry
19,200
7,000
118,100
387,500
87,900
7,000
226,800
116,300
30,500
3,000
5,100
5,700
83,600
6,700
41,300
500
7,900
131,300
39,800
2,100
6,100
3,200
265,000
5,900
3,000
15,900
27,900
15,500
3,200
31,100
18,600
3,700
1,400
1,700
2,100
12,400
2,200
7,500
300
2,500
10,300
3,800
800
3,000
1,800
31,800
Herbs:
Achillea millefolium
Anaphalis margaritacea
Arnica cordifolia
Asarum caudatum
Equisetum spp.
Hypericum perforatum
Polystichum munitum
Pteridium aquilinum
Trillium ovatum
Urtica dioica
Xerophyllum tenax
common yarrow
western pearly everlasting
heartleaf arnica
British Columbia wildginger
horsetail spp.
common St. John’s wort
western swordfern
western brackenfern
Pacific trillium
stinging nettle
common beargrass
19,100
1,700
1,300
1,600
10,300
1,800
176,200
141,600
400
4,000
18,600
2,400
500
700
500
3,000
800
21,700
14,000
100
1,800
5,700
Note: Data subject to sampling error; SE = standard error.
182
California’s Forest Resources, 2001–2005
Table 55—Percentage of forested plots with selected lichen
nontimber forest products present, by species, California,
2001–2005
Scientific name
Common name
Alectoria sarmentosa
Bryoria fremontii
Letharia vulpina
Lobaria pulmonaria
Parmelia saxatilis
Ramalina menziesii
Usnea
Usnea hirta
Vulpicida canadensis
Witch’s hair lichen
Old man’s beard
Wolf lichen
Lungwort
Crottle
Lace lichen
Beard lichens
Beard lichen
Brown-eyed sunshine lichen
Percent
13.5
13.1
53.8
6.9
1.5
2.9
38.2
1.1
8.4
Note: Data subject to sampling error; 275 forested plots were sampled.
183
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