1. Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Institute of Eco-Chongming, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China.
2. Institute of Ecology, College of Urban and Environmental Science and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, 100871, China.
3. Department of Biological Sciences, Eastern Illinois University, Charleston, IL, 61920, USA.
4. School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332, USA.