GIS在怒江州贡山县退耕还林中的应用

Application of GIS to Converting Cultivated Land to Forest in Gongshan,Nujiang

退耕还林是保护生态环境,治理水土流失的一项重大工程,也是改善生态环境,促进区域经济可持续发展的重要途径。运用GIS技术空间分析方法,对土地利用、等高线、河流等数据进行分析,获得退耕还林面积大小,同时也对退耕还林的时序作了一定的分析,最终确定退耕还林的重点区域。结果显示:贡山县坡度>25°的需要退耕还林的面积为2 184.78hm2,重点退耕还林的面积为479.31hm2。

Reforest the cultivated land is one of the essential project for protecting the ecological environment as well as soil and water conservation.At the same time,it's an important way to improve ecological environment and promote sustainable economic development in the region.The states social and economic development was restricted by the remote terrain,natural and man-made factors and eco-environmental degradation of the.By using GIS technology,combined with the principle of converting cultivated land to forest and with the research method of spatial analysis,this paper did overlay analysis for data,such as land use,slope,river and so on.It resulted in acquiring the areas of converting cultivated land to forest and investigating its timing and Forest distribution.At last determine the key area of converting cultivated land to forest.An investigation showed that need the areas of 2184.78 hm2 for converting cultivated land to forest above 25 of slope in gongshan,and the scope of the key area of Converting Cultivated Land To Forest is 479.31hm2.