The Analysis Of Mining Area's Land Use System And Updating Of Elements Based On GIS Technology

GIS and RS are used as technical means into the management on land use in mining area. The result of the interpretation of remote sensing images are used as the main source data in updating original land-use system in ArcGIS9.0.Zhangji mining area's original land-use system map is extracted on the basis of the land-use type database in Huainan mining area of Anhui Province. The map is used as the background map .The CBERS images of Zhangji mining area in 2000 and the images in 2007 are selected and downloaded from the website of the China Center for Resource Satellite Data and Applications (CRESDA). After the pretreatment works such as geometric correction and image enhancement, Zhangji mining area are selected and cut down. They are one of the main sources of original land-use system updating information.The normalized difference vegetation index (NDVI) is calculated, and the spatial elements such as the mining subsided land and the new mining industrial square, roads and railways are extracted by the computer automatic classification method assisted by visual interpretation combining with the original land-use system.Overlay analyses between mining subsidence and original land-use elements are done in order to get the scope and exact area of each type of land-use affected by subsidence.According to the overlay results and RS images, the vector elements in Zhangji mining area's land use syetem are updated. The change of dynamic land use in study area is showed by the thematic maps and tables.According to the effect of subsidence on environment, the renovate measure of mining subsidence in Zhangji mining area is put forward. The related basis of land reclamation planning, environment comprehensive management and ecology restoration measure in Zhangji mining area is provided.