1. State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China
2. University of Chinese Academy of Sciences Beijing 100049 China
3. Chemistry and Environment Science School Yili Normal University Yining 835000 China
4. Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection College of Resources and Environment Linyi University Linyi 276000 China
5. Research Center for Ecology and Environment of Central Asia Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China