Affiliation: | 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, P. R. China;2. Institute of Soil and Water Conservation of Chinese Academy of Sciences (CAS), Ministry of Water Resources (MWR), Yangling, Shaanxi, P. R. China;3. Animal Science and Technology School, Henan University of Science and Technology, Luoyang, Henan, P. R. China |