气候变化领域集成服务门户(CCPortal): Changing the retention properties of catchments and their influence on runoff under climate change

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DOI	10.1088/1748-9326/aadd32
	Changing the retention properties of catchments and their influence on runoff under climate change
	Yang, Hui; Piao, Shilong; Huntingford, Chris; Ciais, Philippe; Li, Yue; Wang, Tao; Peng, Shushi; Yang, Yuting; Yang, Dawen; Chang, Jinfeng
通讯作者	Piao, SL (通讯作者)
发表日期	2018
ISSN	1748-9326
卷号	13 期号:9
英文摘要	Many studies on drought consider precipitation and potential evapotranspiration (PET) impacts. However, catchment water retention is a factor affecting the interception of precipitation and slowing down runoff which also plays a critical role in determining the risks of hydrological drought. The Budyko framework links retention to the partitioning of precipitation into runoff or evapotranspiration. Applied worldwide, we demonstrate that retention changes are the dominant contribution to measured runoff changes in 21 of 33 major catchments. Similarly, assessing climate simulations for the historical period suggests that models substantially underestimate observed runoff changes due to unrepresented water management processes. Climate models show that water retention (without direct water management) generally decreases by the end of the 21st century, except in dry central Asia and northwestern China. Such decreases raise runoff, mainly driven by precipitation intensity increases (RCP4.5 scenario) and additionally by CO2-induced stomata closure (RCP8.5). This mitigates runoff deficits (generally from raised PET under warming) by increasing global mean runoff from -2.77 mm yr(-1) to +3.81 mm yr(-1) (RCP4.5), and -6.98 mm yr(-1) to +5.11 mm yr(-1) (RCP8.5).
关键词	POTENTIAL EVAPOTRANSPIRATION PLANT-RESPONSES WATER CYCLE VEGETATION PRECIPITATION INCREASE CARBON 21ST-CENTURY MULTIMODEL FRAMEWORK
英文关键词	runoff; water retention; climate change; atmospheric CO2; hydrological cycle; drought risk
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000444612000001
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
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/259350
推荐引用方式 GB/T 7714	Yang, Hui,Piao, Shilong,Huntingford, Chris,et al. Changing the retention properties of catchments and their influence on runoff under climate change[J]. 中国科学院青藏高原研究所,2018,13(9).
APA	Yang, Hui.,Piao, Shilong.,Huntingford, Chris.,Ciais, Philippe.,Li, Yue.,...&Chang, Jinfeng.(2018).Changing the retention properties of catchments and their influence on runoff under climate change.ENVIRONMENTAL RESEARCH LETTERS,13(9).
MLA	Yang, Hui,et al."Changing the retention properties of catchments and their influence on runoff under climate change".ENVIRONMENTAL RESEARCH LETTERS 13.9(2018).