The diagnostic edaphic adjectives (site modifiers) used to distinguish site
types in the Alex Fraser Research Forest.
Name
Code
Description
alluvial
al
flooded sites that are adjacent to permanent streams
cool-slope
cs
sites on >10% slopes with the aspect ranging from 3150 through 1350;
local climate
crest-rocky
cr
sites with very shallow (<30 cm) soils and exposed bedrock or coarse
fragments on ridges, crests, and hilltops
crest-skeletal
ck
sites on crests and ridges, crests, and hilltops with >30 cm deep soils
and >35% or more coarse fragments (gravel, rubble, or stones) on the
ground surface and/or in the soil
depression
dp
water-collecting sites on concave terrain
drier
dr
drier than the average for the site unit; either on warm-slopes or
associated with the coarse particle-size soils
flat
ft
level terrain sloping <10%
gully-ravine
gr
sites in gullies or ravines (ravines)
slope
sl
sites with slope gradient >10%
slope-rocky
sr
sites on >10% slopes with a discontinuous complex of shallow soils
and exposed bedrock
slope-skeletal
sk
sites on >10% slopes with >30 cm deep soils and >35% or more
coarse fragments (gravel, rubble, or stones) on the ground surface
and/or in the soil
stony
ny
sites on flats and <30% slopes with >30 cm deep soils and >35% or
more coarse fragments (predominantly stones) on the ground surface
and in the soil
stream-edge
se
sites on flats and <30% slopes with >30 cm deep soils and >35% or
more coarse fragments (predominantly stones) on the ground surface
and in the soil
typic
ty
sites representing the central concept of the site unit and featuring a
very narrow topographic and edaphic range
warm slope
wt
sites on >10% slopes with the aspect ranging from 135 0 through 3150;
local climate
wetter
wt
wetter than the average for the unit, typically on flats and cool aspect
slopes
zonal
zn
sites on flats (<10%) slopes with moderately deep soils that have
loamy texture, <35% coarse fragments, and intermediate soil
moisture and nutrient regimes
Table ?
Block.
Site series
codes
Mapping legend for the ICHmk3 portion of the Gavin Lake
Abbreviated revised site series name
Corresponding BC Forest Service site series
name
Site type
codes
Site type name
02 or CD/cr
02 or CD/sr
02 or CD/sy
crest-rocky
slope-rocky
slope-stony
03 or CH/ck
03 or CH/sk
03 or CH/ny
crest-skeletal
slope-skeletal
stony
01 or PT/dr
01 or PT/sl
01 or PT/zn
drier
slope
zonal
05 or LO/fd
05 or PE/cs
flat-depression
cool-slope
04 or GY/ft
04 or GY/sl
04 or GY/gd
flat
slope
gully-depression
06 or SR/sl
06 or SR/gd
06 or SR/al
slope
gully-depression
alluvial
09 or EQ/dp
09 or EQ/al
depression
alluvial
ICHmk3 variant
02 or CD
Cladonia
FdCw−Wavy-leaved moss
03 or CH
Chimaphila
CwSxw−Soopalallie
01 or PT
Ptilium
CwSxw−Falsebox−Knight’s plume
05 or LO
Lonicera
Sxw−Twinberry−Coltsfoot
04 or GY
Gymnocarpium
CwSxw−Oak fern−Cat’s-tail moss
06 or SR
Streptopus
CwHw−Devil’s club− Lady fern
07 or EQ
Equisetum
CwSxw−Devil’s club−Horsetail