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Northern Research Station
One Gifford Pinchot Drive
Madison, WI 53726
(608) 231-9318
(608) 231-9544 TTY/TDD

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All Live Tree Biomass per Acre of Timberland, 2002



This map shows the spatial distribution of all live tree biomass per acre of timberland in tons per acre of timberland by county. On average, by county, there are 41 tons of live tree biomass per acre of timberland.

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:


USDA Forest Service, Forest Inventory and Analysis.


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


Biomass is defined as the total aboveground, ovendry weight for live sample trees 1.0 inch diameter or larger, including all tops and limbs (excluding foliage).






Last Modified: 03/29/2007