Data Access and Analysis
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Publications
Accessing data on Web
Using Mapmaker application
Spatial Data Service Center
Call us with special requests
Analysis- using FIA data
Attributes of Interest
(40 items to choose from)
This is what will be reported in the cells of the output table
• Numbers of Plots
• Area of Land
All land, Forest land, Timberland (acres)
• Numbers of trees
• Volume
All live, Growing-stock , Sawtimber
• Net growth
• Mortality
• Removals
• Biomass
Classification Variables
Headings for: Page, Row, Column
(currently 86 to choose from)
•All live stocking
•County code
•Current diameter
•Forest type
•Growing-stock volume
•Major land use
•Ownership class
•State code
•Species
•Species group
•Stand size
•Tree grade
State Map
With Counties Colored
Circle retrieval
around Pittsburgh
Public Access to FIA Data
• Queries for forest estimates using
boundaries other than “county” can be
made, BUT the plots are swapped and
fuzzed.
CIPSEA
• Confidential Information Protection and
Statistical Efficiency Act of 2002
• Title V of E’Govt Act of 2002 (PL 107-347)
• Data collected by executive
federal agencies must be kept
confidential if respondents are
told so
• Class E felony = 5 years in
prison and/or $250,000 fine
Random Most Similar Neighbor Swap
etc.
etc.
etc.
Policies and Procedures
• Rule of “3”
– Within any summary of data there must be 3
different privately owned plots included
– Ex. Summary of data by a soil type polygon –
there must be 3 different privately owned plots
making up each cell in the table of summary
statistics provided
Northeastern FIA
Spatial Data Service Center
• Elizabeth LaPoint
• Northeastern Research Station-FIA
• Located at USDA Forest Service Louis
C. Wyman Forestry Sciences
Laboratory in Durham, New Hampshire
• elapoint@fs.fed.us
• Phone (603)
868-7675
Change in Growing-stock Volume on Private
Timberland by Unit, 1989-2004
Allegheny +4.0%
+1.7%
North-central
Northeastern
+4.1%
Pocono
+16.7%
Western
South-central
+5.4%
+7.5%
Southwestern
+23.5%
Southeastern
+16.8%
State Average +8.0%
Top Three Species on Private Timberland, by
Unit, and Percent Increase 1989-2004
Red Maple +17.2
Sugar maple -19.5%
Blk. Cherry +9.1%
Northeastern
Allegheny
Blk. Cherry +0.8%
Red Maple +25.4%
N. Red Oak -12.5%
Red Maple +18.9%
Hemlock +76.2%
Sugar maple -22.2%
North-central
Pocono
Red Maple +29.0%
Chestnut oak +27.2%
White oak +22.1%
Western
South-central
Southeastern
Southwestern
Red Maple +8.3%
Blk. Cherry +7.9%
N. Red Oak +8.6%
Red Maple +28.5%
Blk. Cherry +8.1%
N. Red Oak -20.6%
Yellow-poplar +36.4%
Other oaks +20.5%
N. Red Oak +48%
Chestnut oak +21.7%
N. Red Oak +18.7%
Other oaks +21.9%
Rich Widmann
USDA Forest Service
11 Campus Blvd., Suite 200
Newtown Square, PA 19073
Phone 610-557-4051
e-mail rwidmann@fs.fed.us