[Wu, Yijin] Cent China Normal Univ, Sch Urban & Environm Sci, Wuhan 430079, Peoples R China.
[Becker, Stefan] Univ Wisconsin, Dept Geog, Oshkosh, WI 54901 USA.
[King, Lorenz; Hartmann, Heike] Univ Giessen, Inst Geog, Giessen, Germany.
[Kung, Hsiang-Te] Memphis State Univ, Dept Earth Sci, Memphis, TN 38152 USA.
[Jiang, Tong] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China.