Figure 6.15--Forest population density index (FPD) in (A) people per square mile of forest by county for 1992 and (B) change in FPD for 1992 to 2020 [1992 forest land use from the National Resources Inventory (National Cartography and Geospatial Center (1998); 2000 forest use from the land use forecasting model described in Hardie and others (2000); population in 1992, U.S. Census Bureau (2002); and population in 2020 from county-level forecasts by NPA Data Service Inc. (1999)]