[Zhang, Maomao; Tan, Shukui] Huazhong Univ Sci & Technol, Coll Publ Adm, Wuhan 430079, Peoples R China.
[Pan, Zichun] Northwest A&F Univ, Coll Econ & Management, Yangling 712100, Peoples R China.
[Hao, Daoqing] Dongbei Univ Finance & Econ, Sch Management Sci & Engn, Dalian 116025, Peoples R China.
[Zhang, Xuesong] Cent China Normal Univ, Coll Urban & Environm Sci, Wuhan 430079, Peoples R China.
[Chen, Zhenhuan] Northeast Forestry Univ, Coll Econ & Management, Harbin 150040, Peoples R China.