1. Department of Resources and Environmental Science, College of Agriculture/The Key Laboratory of Oasis Eco-agriculture of the Xinjiang Production and Construction Corps, Shihezi University, Shihezi 832003, P. R. China
2. College of Life Science, Shaoxing University, Shaoxing, Zhejiang 312000, China
3. Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
4. University of Chinese Academy of Sciences, Beijing 100049, China