气候变化领域集成服务门户(CCPortal): Rewetting global wetlands effectively reduces major greenhouse gas emissions

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DOI	10.1038/s41561-022-00989-0
	Rewetting global wetlands effectively reduces major greenhouse gas emissions
	Zou, Junyu; Ziegler, Alan D.; Chen, Deliang; McNicol, Gavin; Ciais, Philippe; Jiang, Xin; Zheng, Chunmiao; Wu, Jie; Wu, Jin; Lin, Ziyu; He, Xinyue; Brown, Lee E.; Holden, Joseph; Zhang, Zuotai; Ramchunder, Sorain J.; Chen, Anping; Zeng, Zhenzhong
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	627
结束页码	+
卷号	15 期号:8 页码:20
英文摘要	Carbon and nitrogen losses from degraded wetlands and methane emissions from flooded wetlands are both important sources of greenhouse gas emissions. However, the net-exchange dependence on hydrothermal conditions and wetland integrity remains unclear. Using a global-scale in situ database on net greenhouse gas exchanges, we show diverse hydrology-influenced emission patterns in CO2, CH4 and N2O. We find that total CO2-equivalent emissions from wetlands are kept to a minimum when the water table is near the surface. By contrast, greenhouse gas exchange rates peak in flooded and drained conditions. By extrapolating the current trajectory of degradation, we estimate that between 2021 and 2100, wetlands could result in greenhouse gas emissions equivalent to around 408 gigatons of CO2. However, rewetting wetlands could reduce these emissions such that the radiative forcing caused by CH4 and N2O is fully compensated by CO2 uptake. As wetland greenhouse gas budgets are highly sensitive to changes in wetland area, the resulting impact on climate from wetlands will depend on the balance between future degradation and restoration. Global in situ observations show greenhouse gas emissions from wetlands are lowest when the water table is near the surface, and therefore rewetting wetlands could substantially reduce future emissions.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000832487600001
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272456
作者单位	Southern University of Science & Technology; Maejo University; University of Gothenburg; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; UDICE-French Research Universities; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); University of Copenhagen; University of Hong Kong; University of Hong Kong; Chinese University of Hong Kong; University of Leeds; University of Leeds; Colorado State University; Colorado State University
推荐引用方式 GB/T 7714	Zou, Junyu,Ziegler, Alan D.,Chen, Deliang,et al. Rewetting global wetlands effectively reduces major greenhouse gas emissions[J],2022,15(8):20.
APA	Zou, Junyu.,Ziegler, Alan D..,Chen, Deliang.,McNicol, Gavin.,Ciais, Philippe.,...&Zeng, Zhenzhong.(2022).Rewetting global wetlands effectively reduces major greenhouse gas emissions.NATURE GEOSCIENCE,15(8),20.
MLA	Zou, Junyu,et al."Rewetting global wetlands effectively reduces major greenhouse gas emissions".NATURE GEOSCIENCE 15.8(2022):20.