Fig. 5. Land use/cover pattern and temperature distribution in the PRD region on Oct. 13, 1990 and Nov. 1, 2000, (a) land use/cover patterns on Oct. 13, 1990, (b) land
use/cover patterns on Nov. 1, 2000, (c) temperature on Oct. 13, 1990, and (d) temperature on Nov. 1, 2000. The boxes in (a) are the locations of the examples for
grassland degradation and crop harvest shown inFig. 6.