基于遥感和GIS的平坝县岩溶地区石漠化监测

Monitoring on Rocky Desertification in Karst Area in Pingba Country Based on RS and GIS

为平坝县石漠化的综合治理提供参考依据,对2008年ALOS数据、2009年SPOT 5数据进行图像预处理,并结合数字高程模型、土地利用现状图等背景数据进行图像辨读解译一系列处理分析。结果表明:平坝县非岩溶区面积为37 818hm2,石漠化土地26 684.5hm2,潜在石漠化土地11 267.8hm2,非石漠化土地2 4129.4hm2,分别占全县国土面积的37.86%、26.71%、11.28%和24.15%。按行政区划分,石漠化土地主要分布在马场镇、乐平乡、齐伯乡、白云镇、高峰镇及城关镇。按地形划分,石漠化土地集中分布在中西部峡谷地区,且沿河、湖地带性分布比较明显。

The author took a series of image preprocessing of 2008 ALOS data and 2009 SPOT 5 data, and then combined with the DEM, present land use map and other background data to do image interpretation to provide a reference for comprehensive treatment of rocky desertification in Pingba County. The results were as follows： non-karst area 37 818 hm2 ,rocky desertification land 26 684.5 hm2 , potential of rocky desertification land 11 267. 8 hm2, non-rocky desertification land 24 129. 4 hm2, accounting for 37.86%, 26.71%, 11.28% and 24.15% of total land area. In administrative region, rocky desertification land is mainly distributed in towns of Machang, Leping, Qibo, Baiyun, Gaofeng and Chengguan. According to the topography division, rocky desertification land mainly distributed in the midwest canyon area, and river, lake zonal distribution is obvious.