In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service.[2] Tree volumes and weights are not directly measured in the field, but computed from other variables that can be measured.[3][4]
This is only the total amount of timberland. Actual forest cover for each state may be significantly higher.[5][1]
- ^ a b "Forest Inventory and Analysis National Program - FIA Library". www.fia.fs.fed.us. Archived from the original on 11 November 2020. Retrieved 21 April 2018.
- ^ "Forest Inventory and Analysis Fiscal Year 2016 Business Report" (PDF). United States Department of Agriculture. Retrieved 25 July 2022.
- ^ "FIA Volume Calculations" (PDF). fs.fed.us. Archived from the original (PDF) on 21 November 2020. Retrieved 21 April 2018.
- ^ Bechtold, William A.; Patterson, Paul L. (2005). Bechtold, William A; Patterson, Paul L (eds.). "The enhanced forest inventory and analysis program - national sampling design and estimation procedures". Gen. Tech. Rep. SRS-80. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. 85 p. doi:10.2737/SRS-GTR-80. hdl:2027/umn.31951d02988399b. Retrieved 25 July 2022.
- ^ "United States Map: Percent of Area with Forest, 2002 | The Federal Reserve Bank of Minneapolis". fedgazette. Archived from the original on January 7, 2009.
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