Study On The Dynamic Changes Of Land Use And Landscape Patter Of Typical Agro-pasture Zigzag Zone In Northeast China

Selected four prefectures of Kulun, Keerqin,Kangpin and Faku as topic agro-pasture zigzag zone in Northeast China, Combined the integrated technology of ecological quantity analytical method with GIS technology through Arc Info, Arc View and Fragstats, the changes of land use/cover and landscape pattern had been analyzed in this paper, using the land use data of 1987,1995,2003 and 2007,and will carry on the forecast to the future land Use structure. The driving forces of the LUCC were the nature, society and economic development.The results show that the areas of farmland and grassland obviously decrease, while the areas of unused land increase, and the areas of forest land and construction land keep less increase, then water land keep less decrease. The major patterns of land use change are the conversions of farmland to grassland and unused land, forest land to grassland, and grassland to unused land. In the future 12 years, the areas of farmland, forest land, grass land and water land will keep decrease, and construction and unused land will increase. The common factors of affecting the areas of farmland and grass land are plantation output and the number of alargeanimal.The analysis on the index of patch show that from 1987 to 1995, landscape is becoming more fragmental, and the diversification and evenness of landscape pattern are more obvious; from 1995 to 2003, the diversification is also obvious; form 2003 to 2007 the diversification is decrease, and evenness of landscape pattern is stable. The area is easily be interrupt by people before 1995,and the interrupt is decreasing after 1995.