1. College of Forestry and Landscape Architecture, Xinjiang Agricultural University, Urumqi 830052, China
2. State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
3. Gongliu County Forestry and Steppe Bureau, Gongliu 835400, China