Forest Inventory and Analysis National Program

All Live Merchantable Softwood Tree Biomass on Timberland, 2002

Description

This map shows the spatial distribution of all live merchantable softwood tree biomass in 2002, in million tons by county.



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:

Distributor:

USDA Forest Service, Forest Inventory and Analysis.

Layers:

USDA Forest Service, 2002 RPA data and the National Atlas of the United States.

Definitions:

Merchantable biomass is defined as the total ovendry, gross biomass (including bark) of a tree 5.0 inches DBH or larger from a 1-foot stump to a minimum 4-inch top DOB of the central stem.