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Fig. 1 | Environmental Sciences Europe

Fig. 1

From: Irrigation expansion has kept pace with the CO2 fertilization effect on vegetation growth in a typical arid region

Fig. 1

Variations of vegetation growth in IANC. Interannual variations of growing season (from May to October) mean GIMMS3g NDVI in a the whole region, b the cropland zone, and c the natural vegetation zone. Interannual variations of growing season accumulative GPP calculated by revised LUE model in d the whole region, e the cropland zone, and f the natural vegetation zone. The shaded areas in the figure represent the 95% confidence intervals of the fitted curves. In panels (c, f), we divided two periods, before and after 1995

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