1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, China
2. Leibniz-Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany
3. Africa Multiple Cluster of Excellence, University of Bayreuth, Bayreuth, Germany
4. Chinese Academy of Science and Technology for Development, Ministry of Science and Technology, Beijing, China
5. Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas (Ministry of Education), Northwest A&F University, Yangling, China
6. Faculty of Life Science, Humboldt University of Berlin, Berlin, Germany