This study was supported by the National Natural Science Foundation of China(Grant no.41401299);the National Basic Research Program of China(Grant no.2007CB407201);the USDA-ARS Grazinglands Research Laboratory.The authors would like to thank Dr.Römkens M.J.M.,Dr.Xiangming Xiao,the editors and anonymous reviewers for their helpful comments and suggestions.
Soil erodibility(K-factor)is an essential factor in soil erosion prediction and conservation practises.The major obstacles to any accurate,large-scale soil erodibility estimation are the lack of necessary data on soil...