1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Water and Soil Conservation, Northwest A&F University Yangling PR China
2. Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Yangling PR China
3. Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Harbin PR China
4. Department of Soil and Water Conservation Yangtze River Scientific Research Institute Wuhan PR China