干旱区生态环境知识资源中心(Arid): Compensatory climate effects link trends in global runoff to rising atmospheric CO2 concentration

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DOI	10.1088/1748-9326/ab5c6f
	Compensatory climate effects link trends in global runoff to rising atmospheric CO2 concentration
	Yang, Hui; Huntingford, Chris; Wiltshire, Andy; Sitch, Stephen; Mercado, Lina
通讯作者	Yang, H (corresponding author), Ctr Ecol & Hydrol, Benson Lane, Wallingford OX10 8BB, Oxon, England. ; Yang, H (corresponding author), Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing 100871, Peoples R China.
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2019
卷号	14 期号:12
英文摘要	River runoff is a key attribute of the land surface, that additionally has a strong influence on society by the provision of freshwater. Yet various environmental factors modify runoff levels, and some trends could be detrimental to humanity. Drivers include elevated CO2 concentration, climate change, aerosols and altered land-use. Additionally, nitrogen deposition and tropospheric ozone changes influence plant functioning, and thus runoff, yet their importance is less understood. All these effects are now included in the JULES-CN model. We first evaluate runoff estimates from this model against 42 large basin scales, and then conduct factorial simulations to investigate these mechanisms individually. We determine how different drivers govern the trends of runoff over three decades for which data is available. Numerical results suggest rising atmospheric CO2 concentration is the most important contributor to the global mean runoff trend, having a significant mean increase of +0.18 0.006 mm yr-2 and due to the overwhelming importance of physiological effects. However, at the local scale, the dominant influence on historical runoff trends is climate in 82% of the global land area. This difference is because climate change impacts, mainly due to precipitation changes, can be positive (38% of global land area) or negative (44% of area), depending on location. For other drivers, land use change leads to increased runoff trends in wet tropical regions and decreased runoff in Southeast China, Central Asia and the eastern USA. Modelling the terrestrial nitrogen cycle in general suppresses runoff decreases induced by the CO2 fertilization effect, highlighting the importance of carbon nitrogen interactions on ecosystem hydrology. Nitrogen effects do, though, induce decreasing trend components for much of arid Australia and the boreal regions. Ozone influence was mainly smaller than other drivers.
英文关键词	runoff climate change atmosphericCO(2) hydrological cycle carbon-nitrogen interaction
类型	Article
语种	英语
开放获取类型	gold, Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000514833200049
WOS关键词	ENVIRONMENT SIMULATOR JULES ; LAND-SURFACE MODEL ; CARBON ; WATER ; NITROGEN ; PHOTOSYNTHESIS ; IMPACT ; OZONE ; CYCLE ; EVAPOTRANSPIRATION
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369762
作者单位	[Yang, Hui; Huntingford, Chris; Mercado, Lina] Ctr Ecol & Hydrol, Benson Lane, Wallingford OX10 8BB, Oxon, England; [Yang, Hui] Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing 100871, Peoples R China; [Wiltshire, Andy] Hadley Ctr, Met Off, Exeter, Devon, England; [Sitch, Stephen; Mercado, Lina] Univ Exeter, Coll Life & Environm Sci, Exeter, Devon, England
推荐引用方式 GB/T 7714	Yang, Hui,Huntingford, Chris,Wiltshire, Andy,et al. Compensatory climate effects link trends in global runoff to rising atmospheric CO2 concentration[J]. 北京大学,2019,14(12).
APA	Yang, Hui,Huntingford, Chris,Wiltshire, Andy,Sitch, Stephen,&Mercado, Lina.(2019).Compensatory climate effects link trends in global runoff to rising atmospheric CO2 concentration.ENVIRONMENTAL RESEARCH LETTERS,14(12).
MLA	Yang, Hui,et al."Compensatory climate effects link trends in global runoff to rising atmospheric CO2 concentration".ENVIRONMENTAL RESEARCH LETTERS 14.12(2019).