Abstract：This paper focused on the change of vegetation coverage and its influencing factors in Xilinhot's Shengli mining area in recent 30 years in Inner Mongolia. Sen gradient estimation and M-K test were used to analyze the trend of NDVI. Vegetation coverage changes were analyzed based on pixel scale and their spatial differeces were studied. The stability of vegetation coverage, the influence of rainfall and topography tactors were studied by transter matrix. The results indicated that: (1) The average NDVI showed a slowly decreasing trend during the past 30 years; (2) The area of damaged vegetation accounted for 23. 02% of the study area, mainly distributed in mining area and urban building land, such as open pits and dumping sites; The area of vegetation restoration accounted for 3. 11% of the study area, mainly distributed in artificial grassland and Xilin River wetland; (3) Vegetation coverage was extremely unstable and easy to transfer; (4) There was a significant negative correlation between slope and vegetation coverage in open-pit coal mine dumps, the relationship between slope direction and vegetation coverage was not significant.

Keyword：Shengli mining area;vegetation coverage;NDVI trend;stability;terrain factor;