Soil Scientist;
Soil Erosion Research Laboratory;
Purdue Univ.;
West Lafayette;
IN 47907-2077;
USA.;
Research Prof.;
Corresponding author;
State Key Laboratory Of Soil Erosion and Dryland Farming on the LoessPlateau;
Institute of Soil and Water Conservation;
CAS and MOWR;
Northwestern A & Univ.;
Yangling Shaanxi712100;
China;