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Science China Press

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(a) and (c) are the spatial distributions of legacy time scales of PREPGS to GIMMS NDVI (NDVIG) and TRENDY GPP (GPPT), respectively; (b) and (d) are the partial correlation coefficients between NDVIG and GPPT, and PREPGS (also considering pre−growing−season temperature, and current season precipitation and temperature) at different legacy time scales, respectively. Insets in (a) and (c) are the frequency distributions of the legacy step for spatial grids, and correlation coefficients are not significant (p < 0.05) within the purple shadows.

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