基于GIS的鞍山市水土流失敏感性评价

Sensitivity assessment of soil and water loss in Anshan based on GIS

基于地理系统系统GIS技术,结合水土流失通用方程,应用DEM和土地利用数据对鞍山市的水土流失敏感性按照生态功能区划暂行规程进行了评价。结果表明:鞍山市土壤侵蚀敏感性较低,轻度敏感性以下区域占大部分,约为72.90%;中度敏感区次之,约为26.08%;高度敏感区所占比例最低,约为约为1.02%,但由于易发生土壤侵蚀应引起特别注意。最后对各敏感区提出了治理建议。

Based on space analysis function of GIS technique, the sensitive division of soil and water loss of Anshan was studied with universal soil and water loss equation in accordance with the national regulation of ecosystem delineation by data of DEM and land use. The results show that the mild erosion takes most area, about 72.90 %.The moderate erosion follows, about 26.08 %.The high degree of erosion is minimum ,about 1.02%,but the high erosion area should be paid attention to. At last, we put forward some suggestions about controllability.