[Xie, R; Wang, Hui; Xie, Rui] Hunan Univ, Sch Econ & Trade, Changsha 410006, Peoples R China.
[Lin, Weifen] Shanghai Univ Finance & Econ, Sch Urban & Reg Sci, Shanghai, Peoples R China.
[Ma, Chunbo] Univ Western Australia, Sch Agr & Environm, Dept Agr & Resource Econ, Crawley, WA, Australia.
[Gong, Linyun] Cent South Univ Forestry & Technol, Swan Coll, Changsha, Peoples R China.
[Lin, Weifen; Lin, WF] South China Agr Univ, Coll Econ & Management, Guangzhou 510642, Peoples R China.