USDA Forest Service
  

Forest Inventory and Analysis National Program


 

Forest Inventory & Analysis
National Office
U.S. Forest Service
1400 Independence Ave., SW
Washington, D.C. 20250-0003

(703) 605-4177

United States Department of Agriculture Forest Service.

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Average Annual Mortality of Softwood Growing-Stock Trees per Acre of Timberland, 2007

Description

This map shows the spatial distribution of the average annual mortality of softwood growing-stock trees per acre of timberland by county. Nationwide, the average is roughly 5.5 cubic feet per acre per year.


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.

 

Sources:

USDA Forest Service, 2007 RPA data, available at: http://www.fia.fs.fed.us/tools-data/

Distributor:

USDA Forest Service, Forest Inventory and Analysis.

Layers:

USDA Forest Service, 2007 RPA data and the National Atlas of the United States.

Definitions:


Growing stock trees - Live trees of commercial species which meet specified standards of quality and vigor. Trees classified as growing stock are commercial species of good form that are at least 5.0 inches diameter breast height (dbh) (4.5 feet). Trees not classified as growing stock are classified as cull trees.


 

Map 678 kb PDF

High resolution zipped
files for download:
Map 1,484 kb- PDF
Map 2,650 kb - JPG

USDA Forest Service
Last Modified: April 1, 2009


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