Number of Live Trees 5 Inch and Larger per Acre of Timberland, 2002
This map shows the spatial distribution of the region’s live trees five inches and larger as a percentage of county timberland area. On average, by county, there are 123 trees, 5 inches and larger per acre of timberland in the area comprising the Northern Research Station.
Use this map only to identify broad spatial trends. At the time of assessment, data were not available for interior Alaska, the Pacific Basin, Puerto Rico, U.S. Virgin Islands, and a small number of counties in the lower 48 states
USDA Forest Service, 2002 RPA data, available at: http://www.fia.fs.fed.us/tools-data/
USDA Forest Service, Forest Inventory and Analysis.
USDA Forest Service, 2002 RPA data and the National Atlas of the United States.
Timberland is defined as forest land capable of producing in excess of 20 cubic feet per acre per year and not legally withdrawn from timber production, with a minimum area classification of 1 acre.
Last Modified: 03/29/2007