[1] Shandong Univ Finance & Econ, Sch Econ, Jinan 250000, Peoples R China
[2] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100000, Peoples R China
[3] Qinghai Inst Water Resources & Hydropower, Qinghai Key Lab Basin Water Cycle & Ecol, Xining 810000, Peoples R China
[4] Nat Conservat, China Program, Beijing 100000, Peoples R China
[5] Lund Univ, Dept Polit Sci, S-22100 Lund, Sweden