气候变化领域集成服务门户(CCPortal): The complex drought effects associated with the regulation of water-use efficiency in a temperate water-limited basin

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DOI	10.1016/j.ejrh.2021.100864
	The complex drought effects associated with the regulation of water-use efficiency in a temperate water-limited basin
	Yan, Sirui; Li, Miao; Sun, Tao; Liu, Qiang; Liang, Liqiao; Wang, Xuan; Li, Chunhui
通讯作者	Liu, Q (通讯作者)
发表日期	2021
EISSN	2214-5818
卷号	36
英文摘要	Study region: Yellow River basin, China. Study focus: Drought, whose intensity and frequency are projected to increase under climate change, profoundly affects terrestrial carbon and water cycles. In the study, we explored the ecological response to long-term meteorological drought, with a focus on gross primary production (GPP), transpiration (Tr) and water-use efficiency (WUE) by a linear fitted model in the Yellow River basin (YRB), a temperate water-limited basin. New hydrological insights: The onset and conclusion of a long-term meteorological drought event were 1990 and 2001, which were used to subdividing pre-drought, drought and recovery periods to reflect hydrological response stages. GPP, Tr and WUE increased between 1982-2010, which presented different trends in the three periods (e.g., WUE decreased in the YRB and increased in the Loess Plateau region (LPR) during the drought period). The sensitivity of GPP to P and Tr varied under different hydrological response stages (e.g., GPP was most sensitive to Tr during the drought period). That is, drought can profoundly alter terrestrial carbon uptake (i.e., GPP) and water loss (i.e., Tr) that effectually alters WUE, which differs in different hydro-climatic conditions. To a certain extent, the expansive revegetation has altered the water balance of the region, subsequently increasing drought risks. This study enhances our understanding of the effects of long-term drought on carbon and water cycles in water-limited ecosystems.
关键词	LAND-SURFACE SCHEME VEGETATION CHANGES CLIMATE EXTREMES LOESS PLATEAU CARBON FLUXES CHINA VARIABILITY PRECIPITATION MODEL PROGRAM
英文关键词	Drought; Water-use efficiency; Gross primary production; Transpiration; Yellow River basin
语种	英语
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS记录号	WOS:000687245900003
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260133
推荐引用方式 GB/T 7714	Yan, Sirui,Li, Miao,Sun, Tao,et al. The complex drought effects associated with the regulation of water-use efficiency in a temperate water-limited basin[J]. 中国科学院青藏高原研究所,2021,36.
APA	Yan, Sirui.,Li, Miao.,Sun, Tao.,Liu, Qiang.,Liang, Liqiao.,...&Li, Chunhui.(2021).The complex drought effects associated with the regulation of water-use efficiency in a temperate water-limited basin.JOURNAL OF HYDROLOGY-REGIONAL STUDIES,36.
MLA	Yan, Sirui,et al."The complex drought effects associated with the regulation of water-use efficiency in a temperate water-limited basin".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 36(2021).