Research on Landscape Pattern Dynamic Changes in Pingdingshan Mining Area Based on RS and GIS

Based on remote sensing(RS) and geographic information system(GIS) technology, the land use range and landscape pattern index were used to study the spatial-temporal change of land use in Pingdingshan mining area, Henan Province, China. We analyze the change of the range and spatial pattern based on remote sensing images in 1978, 1994 and 2006. The results showed: 1) The regional landscape were changed significantly. The cultivated land decreased quickly, the woodland area increased slowly after a period of going down, while the area of city, town, village, industry and mine enlarged obviously. 2) The variation trends of landscape structure and landscape heterogeneity are patch fragmenting, shape of patch becoming regular and types of landscape simplifying. 3) The land use change of Pingdingshan mining area has caused distinct landscape effects, such as environmental quality declining, edge effects intensification, land degradation and landscape elements reducing. 4) The paper suggests that land use manners should be improved in landscape scale so as to rehabilitate and reconstruct landscape ecosystems in this region.