GeoWEPP在黄土高原地区应用的适用性评价  

Evaluation of applicability of GeoWEPP model on Loess Plateau in China

作　　者：张晓明[1] 曹文洪[1] 余新晓[2] 郑培龙 

机构地区：[1]中国水利水电科学研究院,北京100048 [2]北京林业大学水土保持与荒漠化防治重点实验室,北京100083 [3]北京水保生态工程咨询有限公司,北京100053

出　　处：《泥沙研究》2011年第6期50-54,共5页Journal of Sediment Research

基　　金：国家自然科学基金项目(51009154);水利部公益专项(201201082);"十一五"国家科技支撑项目(2006BAD09B02)

摘　　要：WEPP模型是由美国农业部组织开发的土壤水蚀预报模型,研究从两方面来探讨流域版GeoWEPP在黄土高原地区应用的适用性:①GeoWEPP模拟时输入的基本气象参数精度检验;②GeoWEPP对流域侵蚀产沙模拟的精度评价。结果表明,由WEPP模型CLIGEN气候发生器生成气象数据不仅较好反映了实测值,而且精确表达了普通或极端天气的实际分布;GeoWEPP对黄土高原流域径流和输沙进行模拟,模拟值与实测值的绝对误差小于30%,相关系数大于0.90,Nash-Sutcliffe系数大于0.80,模拟值较好反映了实测值。The paper discusses the applicability of the GeoWEPP model on the Loess Plateau in China.First,the accuracy of simulated meteorological data produced by the CLIGEN weather generator was examined.Then,the performance of simulated soil erosion by the GeoWEPP model was evaluated.The results show that the simulated meteorological data produced by the CLIGEN weather generator were not only performed a good agreement with the observed data,but also reproduced the distributions of normal and extreme conditions.The absolute errors between the simulated and observed values of both of water yield and sediment yield were lower than 30%.Their coefficients of determination were higher than 0.90 and the Nash-Sutcliffe coefficients of them were lager than 0.80,which meant the simulated had a good agreement with the observed.

关 键 词：GeoWEPP 气候生成器 适用性评价 黄土高原 

分 类 号：S157[农业科学—土壤学]