Validation of three infiltration models on purple soil under simulated rainfall

作     者：Wang Yukuan1,2,Fu Bin1,3,Xu Pei1,2,Wang Daojie1,2,Wang Xiantuo1,3 and Wang Yongqiang1,3(1.Key Laboratory of Mountain Surface Process and Hazards,Chinese Academy of Seiences,Chengdu 610041,China 2.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China 3.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China) 

作者机构：Key Laboratory of Mountain Surface Process and Hazards Chinese Academy of Sciences Chengdu 610041 China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2007年第17卷第9期

页      面：1059-1066页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：Supported by the National Programon Key Basic Research Projects(Grant Nos.2003CB415202 2007CB407206) 

主　　题：infiltration model sloping farmland purple soil rainfall simulation 

摘      要：So as to find models suitable for the prediction of water infiltration in purple soil,infiltration rates simulated by three popular empirical infiltration models,Horton model,Kostiakov model,and the modified Kostiakov model,were compared by using those observed results on slope in purple soil under rainfall simulation.28 sets of infiltration data were divided into two parts for parameter estimation and validation *** performance of the three infiltration models was evaluated with the Nash and Sutcliffe efficiency *** results show that the percent for Nash and Sutcliffe efficiency greater than 0.7 is about 69.7% for the Horton model,and 48.48%,and 54.55% for the Kostiakov model and the modified Kostiakov model,*** model is better than Kostiakov model and the modified Kostiakov model in most rain events in the ***,Kostiakov model is still suitable for reasonable prediction of the infiltration in purple soil sloping farmland because fewer parameters are ***,rainfall intensity has significant effects on the parameter values used in the simulation *** simulation results can be improved by choosing suitable parameters according to the rainfall intensity.