[1] Changzhou Univ, Sch Urban Construct, Changzhou 213164, Peoples R China
[2] Chengdu Univ Informat Technol, Coll Resources & Environm, Chengdu 610225, Peoples R China
[3] Xichang Univ, Acad Environm & Econ Sci, Xichang 615000, Peoples R China
[4] Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China