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Spatial and temporal variation of ecological risk in the process of ecological immigration in the arid zone of central Ningxia:A case of Hongsibu District
WANG Ya-juan, WANG Peng, HAN Wen-wen, LIU Xiao-peng, CHEN Xiao, KONG Fu-xing
干旱区地理 . 2018, (4): 817 -825 .  DOI: 10.12118/j.issn.1000-6060.2018.04.18