期刊论文

中文

土壤通报

0564-3945

2010

41

2

434-436

10.19336/j.cnki.trtb.2010.02.036

国家“十一五”科技支撑项目（2006BAC10B020） 中国科学院***项目（0629221C01）资助

本校为其他机构

土壤自身的可侵蚀性是土壤侵蚀发生的内在因素. 由于具有明确的物理意义和方便的测定方法,土壤可蚀性K指标值成为水土流失预报模型的一个重要参数. 采用EPIC中土壤可蚀性K值计算方法,对丹江口水库库区内1.94km~2的五龙池小流域的K值进行了计算. 结果显示,研究区内土壤可蚀性K值平均为0.0302thm~2h(MJmmhm~2)~(-1),与我国其他有黄棕壤分布地区已有的研究结果相一致. 小流域土壤可蚀性存在一定的空间变异,但变异性不大(变异系数14.7%),86.56%土地面积上的K值位于0.0264~0.0330之间. 从土壤可侵蚀性强弱判断,该区土壤为易侵蚀土. 利用反距离权重插值(IDW)进行了K值图的制作,并简要介绍了K值图的应用...

The Danjiangkou Reservoir is the water source area of China's South-to-North Water Transfer Project (Middle Route). Water and soil conservation is of critical importance. In this paper, we used Erosion/Productivity Impact Calculator (EPIC) model to calculate the soil erodibility K index value of a representative watershed of Wulongchi with a total area of 1.94 km~2. The results showed that the average K value was 0.0302 with spatial variation coefficient of 14.7%. Also, 86.56% of the watershed area had a K value between 0.0264 and 0.0330. Inverse distance weighted interpolation (IDW) was appli...