Annual inventory report for Pennsylvania's forests: results from the first three years
Resour. Bull. NE-159. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 95 p.
In 2000, the USDA Forest Service's Forest Inventory and Analysis (FIA program implemented a new system for inventory and monitoring Pennsylvania?s forests. The most salient feature of the new inventory process will be a nearly threefold improvement in timeliness. This report summarizes the results for the first 3 years of annual inventory measurements. The area of forest land in Pennsylvania has remained stable since a previous inventory in 1989. The State's forests continue to mature as larger trees and an increase in inventory volume were recorded. A separate study of tree seedlings revealed a general lack of regeneration in half of stands in which regeneration should be adequate.
McWilliams, William H.; Alerich, Carol A.; Devlin, Daniel A.; Lister, Andrew J.; Lister, Tonya W.; Sterner, Stephen L.; Westfall, James A. 2004. Annual inventory report for Pennsylvania''s forests: results from the first three years. Resour. Bull. NE-159. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 95 p. https://doi.org/10.2737/NE-RB-159.