1. State Key Laboratory of Grassland Agro‐Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou PR China
2. Grassland Research Center of National Forestry and Grassland Administration, Research Institute of Forestry Chinese Academy of Forestry Beijing PR China
3. State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing PR China