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Spatial-temporal Variation Characteristics of NPP and the Driving Factors: A Case Study of Yan’an
MA Su, CUI Guoyi, ZHAO Yu, ZHAO Ying, LIU Xuezhen, ZHANG Chengdong
Chinese Agricultural Science Bulletin . 2022, (19): 93 -98 .  DOI: 10.11924/j.issn.1000-6850.casb2021-0733