1. State Key Laboratory of Eco‐hydraulic Engineering in Arid AreaXi'an University of Technology Xi'an China
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water ConservationNorthwest A&F University Xi'an China
3. State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan University Chendu China
4. Department of Ecosystem Sciences and ManagementPennsylvania State University University Park Pennsylvania