Institution: | [1]Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, P. R. China [2]Graduate University, Chinese Academy of Sciences, Beijing 100039, P. R. China [3]Shandong Economic University, Jinan 250014, P. R. China [4]College of Population, Resources and Environment, Shandong Normal University, Ji'nan 250014, P. R. China |