1. Center of Forest Ecosystem Studies and Qianyanzhou Station; Key Laboratory of Ecosystem Network Observation and Modeling; Institute of Geographic Sciences and Natural Resources Research; Chinese Academy of Sciences; Beijing 100101 China
2. University of Chinese Academy of Sciences; Beijing 100049 China
3. The Key Laboratory of Science and Technology of Urban Environment; Peking University Shenzhen Graduate School; Shenzhen 518055 China
4. School of Ecological and Environmental Sciences; Tiantong National Station of Forest Ecosystem; East China Normal University; Shanghai 200241 China
5. Department of Ecology; College of Urban and Environmental Sciences and the Key Laboratory for Earth Surface Processes of the Ministry of Education; Peking University; Beijing 100871 China
6. Department of Plant Physiology; Estonian University of Life Sciences; Kreutzwaldi 1 51014 Tartu Estonia
7. Estonian Academy of Sciences; Kohtu 6 10130 Tallinn Estonia