Abstract: This paper analyses the slope-direction of vegetation coverage of Daqing Mount Natural Reserve based on normalized difference mountain vegetation index (NDMVI)by using RS and GIS with the Landsat TM image data.The results show that(1)Obvious differences of coverage on different slope aspects exist in Daqing Mount Natural Reserve;(2)The slope-direction differentiation of vegetation coverage in Daqing Mount Natural Reserve becomes more obvious with increasing altitude and vertical distributions on different slope aspects are not same;(3)On north and northwest slope,the change of vegetation coverage become unapparent over the altitude of 1400m,while it become more apparent below the altitude of 1400m;(4)On the other slopes,the change of vegetation coverage on the altitude of 1600m to 2000m is smaller than it on higher and lower altitude;(5)On all slopes,the difference of vegetation coverage on the altitude of 1200m to 1600m are not very noticeable.

Key words: slope-direction, vegetation coverage, Daqing Mount