1. College of Grassland Science, Xinjiang Agricultural University, Urumqi 830052, China
2. State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, China
3. College of Agriculture, Xinjiang Agricultural University, Urumqi 830052, China
4. College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China