An analysis on the degradation pattern of the steppe grassland on different slope in North China

In this study, the degradation pattern of the steppe was taken as the study object. Based on Gutman model, four kinds of degraded grassland were extracted from TM image in 1991 and 2005. And the slope of the research area was computed from DEM. In addition, the degradation pattern of the grassland on different slope was analyzed. The result suggests that the study of degradation pattern of the steppe is helpful to control the grassland degradation, and to attain the aim of the sustainable grassland ecosystem management.