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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2017
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Article
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Fig 6
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Research Article
Analysis of Drought Characteristics in Xilingol Grassland of Northern China Based on SPEI and Its Impact on Vegetation
Figure 6
Spatial pattern of SPEI (a), NDVI (b) trend, and their correlation (c) during 2000–2015.
(a)
(b)
(c)