Differentiating cumulative and lagged effects of drought on vegetation growth over the Mongolian Plateau

Abstract Drought has a great impact on global terrestrial ecosystems. A large number of studies have shown that the drought vegetation growth lagged and cumulative effect, but it is unclear how much contributes to different types. Therefore, based standardized precipitation evapotranspiration index (SPEI) base version 2.5 Global Inventory Monitoring Modeling System (GIMMS3g) normalized difference (NDVI) datasets, this study aimed analyze response process types effects in Mongolian Plateau during 1982–2015 using Pearson correlation Mann–Kendall mutation method deeply explore magnitude contribution multiple regression method. Our results show that, from 1982 2015 as whole, NDVI showed an insignificant increasing trend, SPEI had significant 1998 trend before after 1998. Before 1998, months were shorter (1–3 months) central steppe agricultural zones, longer (10–12 southeastern northeastern forest zones; increased (7–12 lag decreased (3–8 most zones. comparison accumulation revealed main driver shifted effect.