_:genid1 "Copyright protected. Obtain permission from the original figure source."^^ . "county-scale-land-use-changes-1950-2000" . "County-Scale Land Use Changes, 1950 to 2000"^^ . "These products were generated using censuses of population, housing, and agriculture: (top) change in population density; (middle) change in land area settled at “exurban densities” (i.e., 1 house per 1 to 40 acres); and (bottom) change in percentage of cropland. Credit: D.G. Brown, University of Michigan (reproduced from Ecological Applications with permission from the Ecological Society of America)."^^ . _:genid1 . . . _:genid2 . _:genid2 . _:genid2 . _:genid2 . _:genid2 .