基于RS&GIS的临沂市北部山区土地利用变化研究

Study of Changes of Land-Use in the Northern Mountainous Area of Linyi on the Basis of RS&GIS

利用1995年、2004年LandsetTM遥感影像提取研究区土地利用数据,通过DEM模型并提取坡度、高程因子,利用ArcGIS的叠加分析功能,获取研究区近十年来土地利用随高程和坡度的变化状况.研究结果表明:近十年来临沂市北部山区土地利用/覆被变化随坡度和高程的变化具有明显的规律,土地利用变化随着高程的增加、坡度的增大而减缓;土地利用变化主要集中在0–400m高程且坡度小于25°范围的坡地,其中以耕地和林地的转化最为剧烈.

The research of changes of land-use is one of the hot topics of global environmental change. TM image are used to create the spatial distribution of land-use by user-computer interactive interpreting method. Under the support of GIS technologies, the study show that the land-use changes slowly with the increase in elevation and slope, the changes are mainly in the elevation of 0-400m and the slope of less then 25°, the changes between land-uses are dramatic mainly on the elevation of 0-400m, and the conversion of farmland and woodland is the most intense.