Estimation of influence of Dong open-cast coal mine area on soil erosion and land use

The large-scale open mining area of loess district is a kind of artificial violent perturbation area. Mining destructs land resources and eco-environment. Precise forecast of soil erosion and land use change by artificial mining is propitious to provide basis references of ecological restoration and rehabilitation for the ecological fragile district. Forecast of soil and water loss and land use change was analyzed based on RS and GIS technique, statistical analysis, historical analogy and inferring from trend for dong open-cast coal mine during 2005～2080. Results show that there are 3666.07 hm² of arable land, 1402.13 hm² of uncultivated land and 121.80 hm² residential land change to industrial and mining area unless reclamation. Diversity of land cover is decreased considerably. Soil and water loss changes from the original 54.50 Mt/a to 77.85 Mt/a.