. An analysis of Pennsylvania's forest resources. Forests and forestry Pennsylvania; Forest management Pennsylvania. concentrated in the western half of the state, the northern Susquehanna River drainage, and a strip along the Pennsylvania-Maryland, Delaware, and New Jersey border in the south- east. The good forest soils, which are most prevalent, are concentrated in eastern Pennsylvania. The poorest soils cover the least area and are found in the Lake Erie drainage and the ridges of central Pennsylvania. Of course, there is local variation within these four broad groups. Detailed county data
. An analysis of Pennsylvania's forest resources. Forests and forestry Pennsylvania; Forest management Pennsylvania. concentrated in the western half of the state, the northern Susquehanna River drainage, and a strip along the Pennsylvania-Maryland, Delaware, and New Jersey border in the south- east. The good forest soils, which are most prevalent, are concentrated in eastern Pennsylvania. The poorest soils cover the least area and are found in the Lake Erie drainage and the ridges of central Pennsylvania. Of course, there is local variation within these four broad groups. Detailed county data are available from the USDA Soil Conservation Service. Undisturbed forest cover pro- tects soils very well. Erosion is mini- mized and compaction is negligible. Disturbance of the forest floor will in- crease these problems, but to varying degrees. When a forest stand is har- vested, for example, the degree of erosion depends more on the logging practices, especially the location, construction, and the use of logging roads, than on the type or extent of the cutting itself (Pennock et al. 1975). Where logging roads are well- planned, constructed, and main- tained, erosion will be minimized and usually within a year or two after log- ging the erosion problem will have disappeared. To keep soil erosion and stream sedimentation at tolerable levels, the Pennsylvania Department of Environ- mental Resources (DER) requires an erosion and sedimentation plan where fewer than 25 acres will be dis- turbed, and an erosion and sedi- mentation permit where more than 25 acres will be disturbed. For timber This main haul road was seeded and will return to forest land use naturally with no adverse environmental Pennsylvania Bureau of Forestry sales. DER concludes that 10 percent of the logged area will be disturbed, so a permit is required for a sale area that exceeds 250 acres. Compaction has two important consequences. When the ability of the soil to absorb water is reduced, the pote
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