1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Northwest A&F University Yangling PR China
2. College of Forestry Northwest A&F University Yangling PR China
3. Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Yangling PR China
4. Department of Geography The University of Hong Kong Pokfulam Hong Kong
5. State Environmental Protection Key Laboratory of Soil Health and Green Remediation Huazhong Agricultural University Wuhan PR China
6. Department of Geography National University of Singapore Singapore Singapore