1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China
2. Department of Land Management, School of Public Affairs, Zhejiang University, Hangzhou, Zhejiang Province 310058, China
3. Zhejiang Provincial Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration, School of Environmental & Resource Sciences, Zhejiang A&F University, Lin An, Zhejiang Province 311300, China
4. Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI 48823, USA