干旱区生态环境知识资源中心(Arid): Global assessment of lagged and cumulative effects of drought on grassland gross primary production

Arid

DOI	10.1016/j.ecolind.2022.108646
	Global assessment of lagged and cumulative effects of drought on grassland gross primary production
	Wei, Xiaonan; He, Wei; Zhou, Yanlian; Ju, Weimin; Xiao, Jingfeng; Li, Xing; Liu, Yibo; Xu, Shuhao; Bi, Wenjun; Zhang, Xiaoyu; Cheng, Nuo
通讯作者	Zhou, YL
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	136
英文摘要	Drought has large impacts on the vegetation growth of global terrestrial ecosystems, particularly grasslands. Extensive in-situ studies have shown that the impact of drought on vegetation growth has lagged and cumulative effects, but it is not well known how grassland productivity (gross primary production or GPP) responds to drought over time at large scales. Here, we investigated the spatiotemporal patterns of lagged and cumulative effects of drought on global grassland GPP using an OCO-2 solar-induced chlorophyll fluorescence (SIF) based GPP product (GOSIF GPP) and the Standardized Precipitation Evapotranspiration Index (SPEI). The results showed that globally, 88.37% of the grassland had a lagged response to drought, with a lagged time scale of mainly 1 month. With the increase in soil water availability, the magnitude of the lagged effect gradually weakened. Grasslands in semiarid and semi humid conditions that were adaptable to periodic drought responded fastest to drought. Globally, more than three quarters (78.55%) of the grassland was affected by the cumulative effect of drought. The accumulated months occurred at longer time scales (8 similar to 10 months) for the region at 40 degrees N-55 degrees N, which is relatively arid. The cumulative effect in relatively arid areas was stronger than that in relatively humid areas, indicating that grasslands in more arid areas had stronger tolerance to drought. More importantly, we found that the cumulative effect of drought on grassland GPP was stronger than the lagged effect. This study highlights the great importance of considering the legacy effect, especially the cumulative effect, of drought on grassland productivity, which would advance our understanding of the impact of climate change on the carbon and water cycles of terrestrial ecosystems.
英文关键词	Gross primary productivity Water stress Lagged effect Cumulative effect Carbon cycle Grassland
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000761399500001
WOS关键词	CLIMATE-CHANGE ; SOIL-MOISTURE ; CARBON UPTAKE ; VEGETATION PRODUCTIVITY ; ECOLOGICAL RESPONSES ; ECOSYSTEM STABILITY ; EXTREME DROUGHT ; WATER-STRESS ; TIME-SCALES ; IMPACTS
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392302
推荐引用方式 GB/T 7714	Wei, Xiaonan,He, Wei,Zhou, Yanlian,et al. Global assessment of lagged and cumulative effects of drought on grassland gross primary production[J],2022,136.
APA	Wei, Xiaonan.,He, Wei.,Zhou, Yanlian.,Ju, Weimin.,Xiao, Jingfeng.,...&Cheng, Nuo.(2022).Global assessment of lagged and cumulative effects of drought on grassland gross primary production.ECOLOGICAL INDICATORS,136.
MLA	Wei, Xiaonan,et al."Global assessment of lagged and cumulative effects of drought on grassland gross primary production".ECOLOGICAL INDICATORS 136(2022).