Research on dynamic change and trend of Guyuan soil erosion based on RS and GIS

摘要

Soil erosion is a natural phenomenon of the earth's surface. Different degrees of soil erosion happen in everywhere except the permafrost area. When human society appears, soil erosion has become a dynamic process under the action of the natural and human activities. In recent years, the remote sensing technology (RS) and geographic information systems technology (GIS) have a significant development which making a variety of related spatial analysis as possible. So in this paper, these two technologies were used to monitor and analyze the change and development trend of Guyuan County's soil erosion in 1998 and 2008.