基于GIS和USLE的土壤侵蚀预测研究——以云南新平大红山铁矿为例  

Study on Prediction of Soil Erosion Based on GIS and USLE——Taking Dahongshan Iron Mine at Xinping of Yunnan Province as A Case Study

作　　者：徐清艳[1] 周跃[2] 

机构地区：[1]闽江学院化学与化学工程系,福州350108 [2]昆明理工大学环境科学与工程学院,昆明650093

出　　处：《水土保持研究》2009年第4期72-75,共4页Research of Soil and Water Conservation

基　　金：云南省自然科学基金(2002D0017M)

摘　　要：将地理信息系统(GIS)与通用土壤流失方程(USLE)相结合对云南新平大红山铁矿区进行土壤侵蚀量的预测和估算。结果表明:全区土壤流失面积为5.54 km2,占矿区总面积的65.17%,年土壤流失量为4.855万t。矿区50 a之后,土壤流失面积变化不大,年流失量下降为2.736万t,减少了43.65%。完成土地生物复垦后的土壤流失变化趋势是强度及其以上级别的土壤侵蚀量降低,中度及其以下的侵蚀量增加。Soil loss was predicted and risk areas of soil erosion were identified in Dahongshan Iron Mine at Xinping of Yunnan province by means of combinin geographical information system（GIS） and universal soil loss equation（USLE）.The results showed that the area of regional soil erosion was predicted to be 5.54 km^2,which was 65.17% of the studied area.The annual soil loss is 4.855×10^4 t.And the erosion area will not change too much in 50 years,but annual soil loss amount will decline to 2.736×10^4 t,at a reducing rate of 43.65 %. The change trend of accomplished vegetation rehabilitation is that the erosion loss amount of highly eroded area will reduce. And the erosion loss amount of low-grade erosion area will increase.

关 键 词：地理信息系统 通用土壤流失方程 土壤侵蚀量 大红山铁矿 

分 类 号：S157.1[农业科学—土壤学] TP79[农业科学—农业基础科学]