Jinwei Dong¹, Xiangming Xiao², Yuanwei Qin³, Bangqian Chen⁴, Weili Kou³, Jie Wang⁵ and Geli Zhang⁶, (1)Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China, (2)Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman, United States, (3)University of Oklahoma, Norman, OK, United States, (4)Organization Not Listed, Danzhou, China, (5)University of Oklahoma Norman Campus, Department of Microbiology and Plant Biology, Center for Spatial Analysis, Norman, OK, United States, (6)China Agricultural University, College of Land Science and Technology, Beijing, China