气候变化领域集成服务门户(CCPortal): Plant Growth Nullifies the Effect of Increased Water-Use Efficiency on Streamflow Under Elevated CO2 in the Southeastern United States

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DOI	10.1029/2019GL086940
	Plant Growth Nullifies the Effect of Increased Water-Use Efficiency on Streamflow Under Elevated CO2 in the Southeastern United States
	Singh A.; Kumar S.; Akula S.; Lawrence D.M.; Lombardozzi D.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:4
英文摘要	Plant response to elevated CO2 concentration is known to increase leaf-level water-use efficiency through a reduction in stomatal opening. Recent studies have emphasized that increased plant water-use efficiency can ameliorate the impact of drought due to climate change. However, there is a potentially counterbalancing impact due to the increased leaf area. We investigate long-term trends (1951 to 2015) of observed streamflow in the Southeastern United States (SE US) and quantify the contribution of major drivers of streamflow changes using single factor climate modeling experiments from Community Land Model Version 5 (CLM5). The SE US streamflow observations do not exhibit a trend, which is in agreement with the CLM5 control experiment. Using the factorial set of CLM5 experiments, we find that increased leaf area under elevated CO2 leads to decreased runoff and completely counteracts increased runoff due to water-use efficiency gains under elevated CO2 and land-use change. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Carbon dioxide; Climate models; Efficiency; Forestry; Land use; Plants (botany); Runoff; Stream flow; Community land models; Control experiments; Land-use change; Model experiments; Plant growth; Streamflow changes; Water cycle; Water use efficiency; Climate change; carbon dioxide; climate change; climate modeling; growth; hydrological cycle; land use change; leaf area; runoff; streamflow; water use efficiency; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170670
作者单位	Earth System Science Program, School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, United States; Department of Computer Science and Software Engineering, Auburn University, Auburn, AL, United States; National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Singh A.,Kumar S.,Akula S.,et al. Plant Growth Nullifies the Effect of Increased Water-Use Efficiency on Streamflow Under Elevated CO2 in the Southeastern United States[J],2020,47(4).
APA	Singh A.,Kumar S.,Akula S.,Lawrence D.M.,&Lombardozzi D.L..(2020).Plant Growth Nullifies the Effect of Increased Water-Use Efficiency on Streamflow Under Elevated CO2 in the Southeastern United States.Geophysical Research Letters,47(4).
MLA	Singh A.,et al."Plant Growth Nullifies the Effect of Increased Water-Use Efficiency on Streamflow Under Elevated CO2 in the Southeastern United States".Geophysical Research Letters 47.4(2020).