[Xiao, Pengnan] Cent China Normal Univ, Coll Urban & Environm Sci, Wuhan 430079, Peoples R China.
[Zhang, Yuan; Yu, Zupeng; Lu, Mengyao] Zhongnan Univ Econ & Law, Sch Business Adm, Wuhan 430073, Peoples R China.
[Qian, Peng] Party Sch Henan Prov Comm CPC, Dept Econ, Zhengzhou 451464, Peoples R China.
[Xu, Jie] Hubei Univ, Fac Resources & Environm Sci, Wuhan 430062, Peoples R China.
[Zhao, Chong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430040, Peoples R China.