EVALUATION OF EROSION PRODUCTIVITY IMPACT CALCULATOR (EPIC) MODEL FOR MIDDLE MOUNTAIN REGION OF NEPAL

编号 zgly0000346617

文献类型 期刊论文

文献题名 EVALUATION OF EROSION PRODUCTIVITY IMPACT CALCULATOR (EPIC) MODEL FOR MIDDLE MOUNTAIN REGION OF NEPAL

学科分类 220.1040;森林土壤学

作者 SohanKumarGHIMIRE  MukandSinghBABEL 

作者单位 CivilEngineer  AssociatePr0fessor 

母体文献 International Journal of Sediment Research;国际泥沙研究: 英文版 

年卷期 2004,19(2)

页码 106-122

年份 2004 

分类号 S157  TP391.9 

关键词 计算机仿真  丘陵  降雨量  暴风雨尺度  水土流失 

文摘内容 This study verifies the applicability of EPIC model for an erosion plot (61.2 m2) and an upland terraced watershed (72 ha) using a total of 94 rainfall events over a study period of two years. In order to analyze the effect of storm size on runoff and soil loss processes, rainfall events are divided into three groups: small (<25mm), moderate (25-50mm) and large (>50ram). Results indicate that the model could predict reasonably well the runoffand soil loss from the erosion plot and the watershed for the moderate and large rainfall events. However, the runoff and soil loss prediction for the small rainfall events is found to be poor. On annual basis, both surface runoff and soil loss predictions match well the observations. In light of the importance of the moderate and large rainfall events in producing most of the annual runoffand soil loss in the study area, the EPIC model is applied to assess the impacts of erosion on agricultural productivity and to evaluate management practices to protect watersheds in the middle mountainous area of Nepal。