1. CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
2. University of Chinese Academy of Sciences, Beijing, China
3. Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
4. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
5. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
6. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
7. Center for Microbial Ecology, Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, Michigan, USA