Dynamic change of marsh landscape patterns and its driving forces in Maqu

By using RS and GIS techniques, landscape ecological method, index of LAND, SHAPE, PD, the change of wetland landscape pattern in Maqu was systematically analyzed from 1995 to 2006. The results shown that the reduction tendency of the wetlands was obvious under the background of climate warming up, and the patch number significantly decreased for those area smaller than 10 hectares. At the same time, reduction in landscape shape index was mainly due to the regularly of larger patches. The results of this study could contribute to the protection of alpine marsh wetland