4 Center for Ecological Research, Northeast Forestry University, 150040 Harbin China
Changjin Cheng (chengcj@bjfu.edu.cn); Mingxu Li (mingxuli@igsnrr.ac.cn); Congcong Liu (liucc@igsnrr.ac.cn); Li Xu (xuli@igsnrr.ac.cn); *Corresponding authors: Nianpeng He (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Tel.: +86 10 64889263; Fax: +86 10 64889432; E-mail: henp@igsnrr.ac.cn)
This manuscript had 150 words in the abstract, 4972 words in the main text, 55 references, 2 table, and 4 figures.Author contribution
N.H. planned and designed the research; C.C., M.L., C.L. and L.X. conducted fieldwork and collected data; C.C. analyzed data and wrote the manuscript; and all authors contributed substantially to revisions.