Large spatial variation and stagnation of cropland gross primary production increases the challenges of sustainable grain production and food security in China
Fang Liu, University of Oklahoma, Norman, United States, Xiangming Xiao, Department of Microbiology and Plant Biology, Center for Spatial Analysis, University of Oklahoma, Norman, United States, Yuanwei Qin, University of Oklahoma, Department of Microbiology and Plant Biology, Norman, United States, HuiMin Yan, CAS Chinese Academy of Sciences, Beijng, China, Jikun Huang, Peking University, Beijing, China, Xiaocui Wu, University of Illinois, Urbana-Champaign, United States, Yao Zhang, Peking University, Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Beijing, China, Zhenhua Zou, University of Maryland College Park, Geographical Sciences, College Park, MD, United States and Russell Doughty, University of Oklahoma, GeoCarb Mission and the College of Atmospheric and Geographic Sciences, Norman, United States
