[Zhao, Ping; Ni, Xiang; Meng, Ran; Sun, Rui] Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Peoples R China.
[Zhao, Feng] Cent China Normal Univ, Coll Urban & Environm Sci, Key Lab Geog Proc Anal & Simulat Hubei Prov, Wuhan 430079, Peoples R China.
[Huang, Chengquan] Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA.
[Huang, Huabing] Sun Yat sen Univ, Sch Geospatial Engn & Sci, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China.
[Lu, Zhong] Southern Methodist Univ, Roy M Huffington Dept Earth Sci, Dallas, TX 75275 USA.