1 College of Land Science and Technology, China Agricultural University, Beijing, China.
2 Department of Microbiology and Plant Biology, and Center for Spatial Analysis, University of Oklahoma, Norman, OK, USA. xiangming.xiao@ou.edu.
3 Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China. dongjw@igsnrr.ac.cn.
4 Climate and Ecosystem Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
5 Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, Institute of Biodiversity Science, Fudan University, Shanghai, China.
6 Department of Microbiology and Plant Biology, and Center for Spatial Analysis, University of Oklahoma, Norman, OK, USA.
7 Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
8 College of Atmospheric and Geographic Sciences, University of Oklahoma, Norman, OK, USA.