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Northern Research Station
One Gifford Pinchot Drive
Madison, WI 53726
(608) 231-9318
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All Live Merchantable Hardwood Tree Biomass per acre on Timberland, 2002



This map shows the spatial distribution of all live merchantable hardwood tree biomass in 2002 in tons per acre of timberland by county. On average, by county, there are 26 tons of merchantable hardwood 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.


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.






Last Modified: 11/20/2007