Land Cover Change and Landscape Pattern of Guizhou Huangjia 10 000-Mu Basins

To reveal the sustainable utilization of land resources in Guizhou 10 000-Mu basins,combined the integrated technology of ecological quantity analytical method with GIS technology,based on ETM image in 2000,ASRAR image in 2005,ALOS image in 2010,the authors conducted a quantitative analysis on the changes of land use/cover landscape pattern in Huangjia Basin.Results:Area of cultivated land continually reduced but forest land,rurban construction,rural dwelling land,water land and road land increased in different degrees from 2000 to 2010.But shrub land presented a first decreasing and then increasing trend.The major patterns of land use change were the conversion of cultivated land to rural dwelling land,land for urban construction and road.Both landscape fragmentation index and landscape diversity index decreased while dominance index reduced.Landscape structure became diverse and uniform.The cultivated land was the most unstable landscape,the landscape structure of forest land was the steadiest.The land use change/cover was affected by the population and economic factor.In the meanwhile,the adjustment of industrial structure and policy also had certain driving role.