1. CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. School of Public Administration, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
4. College of Forestry, Inner Mongolia Agricultural University, Hohhot 010019, China
5. School of Geographical Sciences, Northeast Normal University, Changchun 130024, China
6. E’erguna Wetland Ecosystem National Research Station, Hulunbuir 022250, China