Retrospective assessment of impact on landscape pattern of the open-pit coal mine in grassland areas——taking Shengli No1 open-pit coal mine for example
Taking Shengli No1 open-pit coal mine for example,through interpreting 40 years of remote sensing images around the coal mine,landscape types and landscape patterns change were looked back,and the results showed that：（1）The grassland was main landscape around Shengli No1 open-pit coal mine now,75.41% of the whole landscape was the grassland.Stipa krylovii presented the most part of the grassland landscape,Stipa krylovii was up to 60.22% in the wole landscape.Leymus chinensis was the second biggest part,and it was 11.58% of the whole landscape.（2）The landscape types around Shengli No1 open-pit coal mine changed greatly in recent 40 years,and the grassland landscape decreased and the man-created landscape increased continuously,especially after 2000 the rate of the man-created landscape increase quickly,and area of the man-created landscape in 2010 was 3.54 times as much as in 2000.（3）The soil texture around Shengli No1 open-pit coal mine was having translated from low wet soil to mesophytization and lithoid soil.Comparing with 1973,in 2010 Stipa krylovii area had increased 14.22%,while Leymus chinensis ares had decreased 53.6%.（4） Increasing of the man-created landscapes made the whole landscape around coal mine more diverse and homogeneous,and the dominance of the whole landscape reduced,and the degree of fragmentation enhanced.（5） Increasing of the man-created landscapes destroyed the diversity and homogeneity of the grassland landscape,and the dominance of grassland landscape enhanced with the increase of Stipa krylovii area.
grassland areasthe open-pit coal mineimpact on landscape patternretrospective assessment
NETL
NSTL
万方数据
维普
