[1] Nanjing Univ, State Key Lab Pollut Control & Resource Reuse, Sch Environm, Nanjing 210008, Jiangsu, Peoples R China
[2] Nanjing Univ, Johns Hopkins Univ, Ctr Chinese & Amer Studies, Nanjing 210008, Jiangsu, Peoples R China
[3] Rutgers State Univ, Bloustein Sch Planning & Publ Policy, New Brunswick, NJ 08903 USA