干旱区生态环境知识资源中心(Arid): Evaluating global ecosystem water use efficiency response to drought based on multi-model analysis

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DOI	10.1016/j.scitotenv.2021.146356
	Evaluating global ecosystem water use efficiency response to drought based on multi-model analysis
	Yang, Shanshan; Zhang, Jiahua; Han, Jiaqi; Wang, Jingwen; Zhang, Sha; Bai, Yun; Cao, Dan; Xun, Lan; Zheng, Minxuan; Chen, Hao; Xu, Chi; Rong, Yuejing
通讯作者	Zhang, JH (corresponding author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, 9 Dengzhuang South Rd, Beijing 100094, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	778
英文摘要	Drought has serious consequences on terrestrial ecosystems, particularly for their carbon and water processes. As an important indicator to examine the balance of ecosystem water and carbon cycles, ecosystem water use effi-ciency (WUE) has been widely used to investigate ecosystem responses to drought. However, the response of WUE to drought and the role of different ecosystem processes in controlling the response of WUE to drought are not well studied. In this paper, we used four WUE datasets from different remote sensing-driven (RS-driven) models and three drought indices (Standardized Precipitation Evapotranspiration Index, soil moisture anomaly index and water storage anomaly-based drought index) to comprehensively investigate the response of WUE to drought and its dominant ecosystem processes during the period of 2001-2018. The results showed the WUE datasets from four different RS-driven models had discrepancies in WUE temporal trends, particularly in tropical and subtropical forest and semi-arid regions. The Spearman correlation analysis revealed that the positive correlations between WUE and drought accounted for more than half of global vegetated lands, while negative relationship mainly occurred in the high latitude regions. We further explored the dominant ecosystem processes (represented by GPP and ET) in controlling WUE response to drought, and found ET controlled WUE-drought relationship in the high latitude areas and semi-arid/sub-humid regions, while GPP dominated it in tropical forest regions. Additionally, the effects of GPP and ET on controlling WUE response to drought were examined to change with different drought indices, especially in the semi-arid regions. Our study suggests multi-model analysis tend to reduce uncertainties in analyzing WUE response to drought caused by a single WUE data. Moreover, our results highlight the different role of ecosystem processes in controlling WUE response to drought and provide new information for the underlying mechanism of drought impacts on ecosystem water and carbon cycles. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Drought Remote sensing-driven model Gross primary productivity (GPP) Evapotranspiration (ET) Ecosystem water use efficiency (WUE)
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000655718000006
WOS关键词	GROSS PRIMARY PRODUCTIVITY ; NET PRIMARY PRODUCTION ; TERRESTRIAL EVAPOTRANSPIRATION ; SPATIOTEMPORAL PATTERN ; CARBON-DIOXIDE ; ENERGY FLUXES ; CHINA ; MODIS ; CLIMATE ; FOREST
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351664
作者单位	[Yang, Shanshan; Zhang, Jiahua; Han, Jiaqi; Wang, Jingwen; Cao, Dan; Xun, Lan; Zheng, Minxuan; Xu, Chi] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Digital Earth Sci, Beijing, Peoples R China; [Yang, Shanshan; Zhang, Jiahua; Han, Jiaqi; Wang, Jingwen; Cao, Dan; Xun, Lan; Zheng, Minxuan; Xu, Chi] Univ Chinese Acad Sci, Beijing, Peoples R China; [Zhang, Jiahua; Zhang, Sha; Bai, Yun] Qingdao Univ, Coll Comp Sci & Technol, Remote Sensing Informat & Digital Earth Ctr, Qingdao, Peoples R China; [Chen, Hao] Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China; [Chen, Hao] Tianjin Univ, Tianjin Key Lab Earth Crit Zone Sci & Sustainable, Tianjin, Peoples R China; [Rong, Yuejing] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China; [Rong, Yuejing] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yang, Shanshan,Zhang, Jiahua,Han, Jiaqi,et al. Evaluating global ecosystem water use efficiency response to drought based on multi-model analysis[J],2021,778.
APA	Yang, Shanshan.,Zhang, Jiahua.,Han, Jiaqi.,Wang, Jingwen.,Zhang, Sha.,...&Rong, Yuejing.(2021).Evaluating global ecosystem water use efficiency response to drought based on multi-model analysis.SCIENCE OF THE TOTAL ENVIRONMENT,778.
MLA	Yang, Shanshan,et al."Evaluating global ecosystem water use efficiency response to drought based on multi-model analysis".SCIENCE OF THE TOTAL ENVIRONMENT 778(2021).