Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China;
Graduate University of Chinese Academy of Sciences Beijing 100049 China;
Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China;
Graduate University of Chinese Academy of Sciences Beijing 100049 China;
Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China;
ecological footprint; ecological productive land; ecological deficit; Zhangjiakou City;