基于GIS和RUSLE模型的土壤侵蚀定量评价——以咸宁市咸安区为例  

Quantitative Evaluation of Watershed Soil Erosion Based on GIS and RUSLE——Taking Xian'District as an Example

作　　者：周亚欣[1] 陈浩[2] 袁希平[1] 甘淑[1] 

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]华南师范大学地理科学学院,广东广州510631

出　　处：《安徽农业科学》2015年第21期97-100,106,共5页Journal of Anhui Agricultural Sciences

摘　　要：[目的]对土壤侵蚀的强度做合理的评价和预测,有利于实现区域社会及生态环境的可持续发展。[方法]以咸安区为例,运用RUSLE模型,通过土壤侵蚀力因子、降水因子、坡度因子、坡长因子、植被覆盖因子、水保持因子等6个因子算法,利用GIS构建土壤侵蚀模型,综合评定出咸宁市咸安区土壤侵蚀强度等级。[结果]咸安区总体以微度侵蚀为主;强度侵蚀及其以上侵蚀程度土地共计16.833 1 km2,占总面积的1.12%,其中剧烈侵蚀仅为3.326 3 km2,分布于莲台山、白云岩矿以及孙家山一带。[结论]在咸安区寻求发展过程中,应注重水土保持。[ Objective ] The reasonable evaluation and prediction of soil erosion intensity can realize sustainable development of regional society and ecological environment. [ Method] Taking Xian＇ an District as an example, using RUSLE model, through the soil erosion factor, such as rainfall, slope, slope length, vegetation, soil and water conservation, the soil erosion model was constructed by using GIS, and a comprehensive evaluation of the strength grade of soil erosion in Xian＇ an District was made. [ Result ] The district overall was micro erosion. The total area of intensity and above degree soil erosion type was 16. 833 1 square kilometers, accounting for 1.12% of the total area of the region. Severe erosion area of 3. 326 3 square kilometers, was located in Liantai Mountain, dolomite mine and Sunjia Mountain area. [ Conclusion] In the process of seeking development, soil and water conversation should be paid attention to in Xian＇ an District.

关 键 词：土壤侵蚀 评价 GIS RUSLE 咸安区 

分 类 号：S127[农业科学—农业基础科学]