1. College of Water Resources and Civil Engineering China Agricultural University Beijing People's Republic of China
2. Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing China
3. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation Chinese Academy of Science and Ministry of Water Resources Yangling People's Republic of China
4. College of Water Conservancy and Civil Engineering Shandong Agricultural University Tai'an People's Republic of China