1. The State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS&MWRNorthwest A&F University Yangling Shaanxi Province China
2. College of Natural Resources and Environment and the Key Laboratory of Plant Nutrition and the Agri‐environment in Northwest China (Ministry of Agriculture) Northwest A&F University Yangling Shaanxi China
3. School of Agriculture, Meiji University1‐1‐1 Higashimita, Tama‐ku Kawasaki Kanagawa Japan
4. Johansen Environmental Modelling Consulting Trondheim Norway
5. Department of Renewable ResourcesUniversity of Alberta Edmonton Canada