Pacific Northwest Research Station

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Pacific Northwest Research Station
333 SW First Avenue
Portland, OR 97204

(503) 808-2592

Pacific Northwest Forest Inventory and Analysis

Susan A. Willits, Program Manager
Forestry Sciences Laboratory
620 SW Main, Suite 400
P.O. Box 3890
Portland, OR 97208-3890
Phone: (503) 808-2066

Our Mission: To collect, compile, summarize, and make available high-quality and comprehensive forest inventory data and to provide interpretations of and produce research findings from that data. (For more information, please visit Forest Inventory and Analysis Program Page)

ABOUT US

RESEARCH AREAS

[Photograph]: View of coniferous forest in the Pacific Northwest. The Forest Inventory and Analysis Program is one of seven research program areas of the Pacific Northwest Research Station. The Pacific Northwest Forest Inventory and Analysis (FIA) program inventories the extent and condition of forest resources and analyzes how these resources change over time. The inventories included lands across all ownerships in Alaska, California, Hawaii, Oregon, U.S. Pacific territories, and Washington.

[Photograph]: This photo shows an aerial view of forest that will be inventoried.

An aerial view of forest that will
be inventoried.

[photograph]: Field crew prepares a location plot. FIA consists of a nationally consistent core program, which can be enhanced at the regional, state, or local level to address special interests. The national core consists of three phases:

(1) A remote sensing phase aimed at classifying the land into forest and nonforest and taking spatial measurements such as fragmentation, urbanization, and distance variables.

( 2) FIA consists of a set of field sample locations distributed across the landscape with approximately one sample location plot every 6,000 acres. Field crews, who collect a variety of forest ecosystem data, visit forested sample locations.

(3) Forest Health Management consists of a subset of the phase two plots that are visited during the growing season in order to collect an extended suite of ecological data including full vegetation inventory, tree and crown condition, soil data, lichen diversity, coarse woody debris, and ozone damage.

US Forest Service - Pacific Northwest Research Station
Last Modified: Wednesday, 12 March 2008 at 17:25:43 EDT