摘要
借助GIS技术,运用USLE预测模型,以云南省九大高原湖泊之一——阳宗海为研究对象,对该流域的土壤侵蚀量进行了估算。运用遥感和数学统计对USLE中的参数进行了选定,并通过合理的USLE因子算法,得出了2004年阳宗海流域的土壤侵蚀分布图和侵蚀总量。结合实地考察和土壤侵蚀状况,对土壤侵蚀原因进行了合理的分析,提出了相应的控制措施。
In the research of non - point pollution, how to calculate soil erosion modulus is a very important step. In the paper, Yangzonghai lake, one of the nine lakes of high plateau in Yunnan province, was chosen as research target, and the soil erosion of Yangzonghai lake watershed was predicted by combining geography information system （GIS） technology and universal soil loss equation （USLE） model. By first fixing the parameters of USLE by the methods of remote sensing （RS） and math statistics and the reasonable multiplications USLE, the soil erosion distributing map and the total soil erosion quantity of Yangzonghai lake watershed in 2004 were gained, which will provide scientific basis for land use, soil conservation and pollutant control. Based on the results of site - investigation and the situation of soil erosion, the causes of soil erosion were logically analyzed, and some control measures were proposed.
出处
《环境科学导刊》
2007年第4期1-4,共4页
Environmental Science Survey
关键词
USLE
GIS
土壤侵蚀
阳宗海
universal soil loss equation （USLE）
geography information system （GIS）
soil erosion
