[1] Fujian Normal Univ, Sch Geog Sci, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Cangsan Campus, Fuzhou 350007, Peoples R China
[2] Univ Fraser Valley, Sch Comp, Abbotsford, BC V2S 7M7, Canada
[3] Univ Toronto, Dept Geog & Planning, Toronto, ON M5S 3G3, Canada