[Du, Jun; Wang, Zheng] Henan Acad Sci, Inst Geog Sci, Zhengzhou 450052, Peoples R China.
[Wang, Zheng; Mao, Zhihua] Minist Nat Resources, Inst Oceanog 2, States Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Peoples R China.
[Xia, Junshi] RIKEN Ctr Adv Intelligence Project AIP, Geoinformat Unit, 2-1 Hirosawa, Wako, Saitama 3510198, Japan.
[Chen, Cheng] Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Zhejiang, Peoples R China.
[Zeng, Qun] Cent China Normal Univ, Coll Urban & Environm Sci, Wuhan 430079, Peoples R China.