Qun Gao¹, Gangsheng Wang², Yunfeng Yang¹, Kai Xue³, Feifei Liu⁴, He Zhili⁵, Ning Daliang⁵, Sarah E Hobbie⁶, Peter B. Reich⁷ and Jizhong Zhou⁵, (1)Tsinghua University, School of Environment, Beijing, China, (2)University of Oklahoma Norman Campus, Norman, United States, (3)University of Chinese Academy of Sciences, Beijing, China, (4)Guangdong Institute of Microbiology, Guangzhou, China, (5)University of Oklahoma Norman Campus, Norman, OK, United States, (6)University of Minnesota Twin Cities, Dept. of Ecology, Evolution and Behavior, Saint Paul, MN, United States, (7)University of Minnesota Morris, Morris, MN, United States