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Assessing the Impact of Land Conversion to Urban Use on Soils with Different Productivity Levels in the USA

^a Dep. of Agronomy, College of Agricultural Sciences, and Environmental Resources Research Institute, 101 Land and Water Research Building, The Pennsylvania State Univ., University Park, PA 16802
^b NASA Goddard Space Flight Center, Code 923/Biospheric Sciences Branch, Greenbelt, MD 20772
^c National Soil Survey Center, USDA-NRCS, 100 Centennial Mall North, Lincoln, NE 68508
^d Statistical Lab., Iowa State Univ., 212 Snedecor Hall, Ames, IA 50011
^e ZedX Inc., 369 Rolling Ridge Drive, Bellafonte, PA 16823

View larger version (68K): [in a new window]   Fig. 1. USDA-NRCS region and state boundaries

View larger version (83K): [in a new window]   Fig. 2. Distribution of potential soil productivity in the conterminous United States

View larger version (33K): [in a new window]   Fig. 3. Urban land use map derived from the DMSP/OLS satellite nighttime imagery

View larger version (34K): [in a new window]   Fig. 4. Preurbanization soil productivity levels of land under urbanization