1. Associate Professor, Water Resources and Architectural Engineering College of Shihezi Univ., Shihezi, Xinjiang 832003, China (corresponding author).
2. Professor, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumchi, Xinjiang 830011, China.
3. Associate Professor, Normal College of Shihezi Univ., Shihezi, Xinjiang 832000, China.