干旱区生态环境知识资源中心(Arid): Low and contrasting impacts of vegetation CO2 fertilization on global terrestrial runoff over 1982-2010: accounting for aboveground and belowground vegetation-CO2 effects

Arid

DOI	10.5194/hess-25-3411-2021
	Low and contrasting impacts of vegetation CO2 fertilization on global terrestrial runoff over 1982-2010: accounting for aboveground and belowground vegetation-CO2 effects
	Yang, Yuting; McVicar, Tim R.; Yang, Dawen; Zhang, Yongqiang; Piao, Shilong; Peng, Shushi; Beck, Hylke E.
通讯作者	Yang, YT (corresponding author), Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China.
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2021
卷号	25 期号:6 页码:3411-3427
英文摘要	Elevation in atmospheric carbon dioxide concentration (eCO(2)) affects vegetation water use, with consequent impacts on terrestrial runoff (Q). However, the sign and magnitude of the eCO(2) effect on Q are still contentious. This is partly due to eCO(2)-induced changes in vegetation water use having opposing responses at the leaf scale (i.e., watersaving effect caused by partially stomatal closure) and the canopy scale (i.e., water-consuming induced by foliage cover increase), leading to highly debated conclusions among existing studies. In addition, none of the existing studies explicitly account for eCO(2)-induced changes to plant rooting depth that is overwhelmingly found in experimental observations. Here we develop an analytical ecohydrological framework that includes the effects of eCO(2) on plant leaf, canopy density, and rooting characteristics to attribute changes in Q and to detect the eCO(2) signal on Q via vegetation feedbacks over 1982-2010. Globally, we detect a very small decrease of Q induced by eCO(2) during 1982-2010 (-1.7 %). Locally, we find a small positive trend (p < 0.01) in the Q-eCO(2) response along a resource availability (beta) gradient. Specifically, the Q-eCO(2) response is found to be negative (i.e., eCO(2) reduces Q) in low-beta regions (typically dry and/or cold) and gradually changes to a small positive response (i.e., eCO(2) increases Q) in high-beta areas (typically warm and humid). Our findings suggest a minor role of eCO(2) on changes in global Q over 1982-2010, yet we highlight that a negative Q-eCO(2) response in semiarid and arid regions may further reduce the limited water resource there.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000664045100002
WOS关键词	MODEL INTERCOMPARISON PROJECT ; PROGRAM MULTISCALE SYNTHESIS ; ELEVATED CO2 ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; WATER CYCLE ; SOIL ; PLANT ; RESPONSES ; EVAPOTRANSPIRATION
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
来源机构	中国科学院地理科学与资源研究所 ; 北京大学 ; 清华大学 ; Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350519
作者单位	[Yang, Yuting; Yang, Dawen] Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China; [McVicar, Tim R.] CSIRO Land & Water, Black Mt, Canberra, ACT 2601, Australia; [McVicar, Tim R.] Australian Natl Univ, Australian Res Council, Ctr Excellence Climate Extremes, Canberra, ACT, Australia; [Zhang, Yongqiang] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China; [Piao, Shilong; Peng, Shushi] Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing 100871, Peoples R China; [Beck, Hylke E.] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	Yang, Yuting,McVicar, Tim R.,Yang, Dawen,et al. Low and contrasting impacts of vegetation CO2 fertilization on global terrestrial runoff over 1982-2010: accounting for aboveground and belowground vegetation-CO2 effects[J]. 中国科学院地理科学与资源研究所, 北京大学, 清华大学, Commonwealth Scientific and Industrial Research Organisation,2021,25(6):3411-3427.
APA	Yang, Yuting.,McVicar, Tim R..,Yang, Dawen.,Zhang, Yongqiang.,Piao, Shilong.,...&Beck, Hylke E..(2021).Low and contrasting impacts of vegetation CO2 fertilization on global terrestrial runoff over 1982-2010: accounting for aboveground and belowground vegetation-CO2 effects.HYDROLOGY AND EARTH SYSTEM SCIENCES,25(6),3411-3427.
MLA	Yang, Yuting,et al."Low and contrasting impacts of vegetation CO2 fertilization on global terrestrial runoff over 1982-2010: accounting for aboveground and belowground vegetation-CO2 effects".HYDROLOGY AND EARTH SYSTEM SCIENCES 25.6(2021):3411-3427.