STUDE ON DYNAMIC CHANGE OF LAND USE OF GUYANG COUNTY BASED ON RS AND GIS

Taking Guyang County of Baotou city as the research object,by 1991,2000 and 2007 three periods of remote sensing images as the basic data source,based on RS,GIS as the technology platform,the interactive interpretation method in different period of land use for interpretation,rule of dynamic change of land use in the area,so as to provide theoretical reference and data support for certain and effective management and ecological environment construction of rational utilization of land resources in this area. The results show that:( 1) dominated by arable land,grassland and woodland types of land use in the study area,three in total close to 96% of the study area,the dominant.( 2) during the study period,reduce the amount of arable land and grassland,water and unused land has a small reduction; woodland area increased most,construction land area also increase.( 3) a single dynamic degree of land use, land use change speed from fast to slow as follows: land construction land cropland unused land grassland waters; on the intensity of land use change,the speed from fast to slow as follows: cultivated land grassland woodland unused land for construction waters.( 4) from the perspective of comprehensive land use degree,land use degree of the study area in 16 years, slightly higher than the national average level,but the land use status quo and present decline,recession intensified trend.