Methane emissions from newly created marshes in the drawdown area of the Three Gorges Reservoir

doi:10.1029/2009JD012410

	Methane emissions from newly created marshes in the drawdown area of the Three Gorges Reservoir
	Chen, Huai 3,4,5; Wu, Yuyuan 4,5; Yuan, Xingzhong 4,5; Gao, Yongheng 2; Wu, Ning 1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2009-09-19
卷号	114 页码:D18301(1-7)
ISSN号	2169-897X
DOI	10.1029/2009JD012410
产权排序	5
文献子类	Article
英文摘要	The study aimed to understand the methane (CH4) emission and its controlling factors in the Three Gorges Reservoir Region and to explore its implication for large dams. We measured CH4 emissions from four vegetation stands in newly created marshes in the drawdown area of the Three Gorges Reservoir, China, in the summer of 2008. The results showed highly spatial variations of methane emissions among the four stands, with the smallest emission (0.25 +/- 0.65 mg CH4 m(-2) h(-1)) in the Juncus amuricus stand, and the greatest (14.9 +/- 10.9 mg CH4 m(-2) h(-1)) in the Scirpus triqueter stand. We found that the spatial variations of CH4 emissions are caused by difference in standing water depth and dissolved organic carbon (DOC). Results also showed a special seasonal variation of CH4 emissions in this area, i.e., maximal emissions in early July followed by a low and steady value before the winter flooding. The seasonality of CH4 emissions was found closely related to temperature and standing water depth. Because of the large area of the drawdown zones for global dam reservoirs and a large CH4 emission rate, such newly created marshes should not be neglected when estimating CH4 emissions from reservoirs.
学科主题	Earth Sciences
URL标识	查看原文
WOS关键词	GREENHOUSE-GAS EMISSIONS ; HYDROELECTRIC DAMS ; SEASONAL-VARIATION ; BOREAL LAKES ; PHRAGMITES-AUSTRALIS ; LITTORAL VEGETATION ; SPATIAL VARIATION ; ENERGY-SOURCE ; CH4 ; EFFLUX
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000270056400012
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29862]
专题	成都生物研究所_生态研究
作者单位	1.Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China. 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; 3.Gradute School, Chinese Academy of Sciences, Beijing, China ; 4.Key Laboratory for the Exploitation of South-West Resources and Environmental Disaster Control Engineering, Ministry of Education,Chongqing University, Chongqing, China; 5.College of Resources and Environment, Chongqing University,Chongqing, China;
推荐引用方式 GB/T 7714	Chen, Huai,Wu, Yuyuan,Yuan, Xingzhong,et al. Methane emissions from newly created marshes in the drawdown area of the Three Gorges Reservoir[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2009,114:D18301(1-7).
APA	Chen, Huai,Wu, Yuyuan,Yuan, Xingzhong,Gao, Yongheng,&Wu, Ning.(2009).Methane emissions from newly created marshes in the drawdown area of the Three Gorges Reservoir.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,114,D18301(1-7).
MLA	Chen, Huai,et al."Methane emissions from newly created marshes in the drawdown area of the Three Gorges Reservoir".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 114(2009):D18301(1-7).