1. China Market Economy Research Center, Beijing Normal University, Beijing, China
2. Key Laboratory of Coastal Basin Environment, School of Ocean Science and Biochemistry Engineering, Fuqing Branch of Fujian Normal University, Fuqing, China
3. School for Resource and Environmental Studies, Dalhousie University, Halifax, Canada
4. Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
5. National Engineering Laboratory for High Efficiency Utilization of Soil and Fertilizer, College of Land and Environment, Shenyang Agricultural University, Shenyang, China
6. School of Economics, Qingdao University, Qingdao, China