半干旱典型风沙区植被覆盖度演变与气候变化的关系及其对生态建设的意义
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Relationship between vegetation coverage and climate change in semi-arid sandy land and the significance to ecological construction
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图3. 中国半干旱典型风沙区1998—2018年NDVI年际变化 |
Fig.3. The inter-annual variations of the normalized-difference vegetation index (NDVI) in semi-arid sandy land of China from 1998 to 2018 |
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