红壤和紫色土抗侵蚀性指标的计算方法研究  

Calculation Methods of Soil Anti-erodibility Index of Red Soil and Purple Soil

作　　者：钟壬琳[1,2] 张平仓[2] 

机构地区：[1]浙江省水土保持监测中心,浙江杭州310009 [2]长江科学院水土保持研究所,湖北武汉430010

出　　处：《水土保持通报》2011年第6期95-98,107,共4页Bulletin of Soil and Water Conservation

基　　金：国家重点基础科学(973)研究发展计划项目"中国主要水蚀区土壤侵蚀过程与调控研究"(2007CB407203)

摘　　要：以长江流域主要侵蚀性土壤——红壤和紫色土为研究对象,以土壤可蚀性K值作为土壤抗侵蚀性指标,采用通用土壤流失方程计算得到人工模拟降雨试验下红壤和紫色土的抗侵蚀性指标,分别为0.325 2和0.276 3。应用侵蚀—生产力评价模型(EPIC),根据上述两种土壤的理化性质计算其土壤抗侵蚀性指标,分别为0.313 8和0.266 8。分析比较这两种方法得到的土壤抗侵蚀性指标,最终得到侵蚀—生产力评价模型(EPIC)的修正系数(1.04)。Two erosive soils,red soil and purple soil in Yangtze River basin,was selected as research objects,and K value was taken as indices of soil anti-erodibility,this paper calculated the soil anti-erodibility of red soil and purple soil under rainfall simulation experiments using universal soil loss equation（USLE）.The results showed that the K values were 0.325 2 and 0.276 3 respectively for red and purple soil.Meanwhile,the K values were also calculated for red and purple soil using EPIC model,they were 0.313 8 and 0.266 8 respectively.Bases on the comparison of K values with two methods,the correction coefficient of EPIC model was obtained,the value was 1.04.

关 键 词：红壤 紫色土 土壤抗侵蚀性指标 侵蚀—生产力评价模型 

分 类 号：S157[农业科学—土壤学]