IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Diel and seasonal variation of methane and carbon dioxide fluxes at Site Guojiaba, the Three Gorges Reservoir
Xiao, SB (Xiao, Shangbin)[ 1,2 ]; Wang, YC (Wang, Yuchun)[ 3 ]; Liu, DF (Liu, Defu)[ 1,4 ]; Yang, ZJ (Yang, Zhengjian)[ 1 ]; Lei, D (Lei, Dan)[ 1 ]; Zhang, C (Zhang, Cheng)[ 1 ]
2013-10-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
Volume25Issue:10Pages:2065-3071
Subtype期刊论文
Abstract

In order to investigate the CH4 and CO2 fluxes across the water-gas interface and identify their controlling factors, four diel field campaigns and one monthly sampling campaign during June 2010 May 2011 were carried out at a site near the Three Gorges Dam, China. The averaged CH4 and CO2 fluxes across the air-water interface from the site were much less than those reported from reservoirs in tropic and temperate regions, and from the natural river channels of the Yangtze River. CH4 Fluxes at the site were very low compared to most other reservoirs or natural lakes. One of the most important reasons may be due to the oxidation of CH4 in the water column owing to the great water depth and high DO in water in the Three Gorges Reservoir. The averaged monthly CH4 and CO2 fluxes at the site during the observation year were 0.05 mg/(m(2).hr) and 104.43 mg/(m(2).hr) respectively with the maximum occurred in July 2010. The monthly CO2 fluxes during the observation year were positively correlated to the surface water temperature, and negatively correlated to the air pressure and the surface water pH. The CO2 flux showed a positive correlation with DOC to some extent, although not significantly, which indicated that allochthonous organic C was a major source of CO2 and biogeochemical processes in this reservoir were C-limited. The significantly positive correlation between the reservoir outflow and the seasonal gas flux indicate the disturbance condition of the water body dominated the seasonal gas emission.

KeywordDiel Flux Seasonal Flux Methane And Carbon Dioxide Emission The Three Gorges Reservoir Methane Oxidation Environmental Factors Reservoir Outflow
DOI10.1016/S1001-0742(12)60269-1
Indexed BySCI ; EI
Language英语
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10021
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorXiao, SB (Xiao, Shangbin)[ 1,2 ]
Affiliation1.Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University,Yichang 443002, China;
2.Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
3.Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China;
4.College of Resources and Environment Sciences, Hubei University of Technology, Wuhan 430068, China
Recommended Citation
GB/T 7714
Xiao, SB ,Wang, YC ,Liu, DF ,et al. Diel and seasonal variation of methane and carbon dioxide fluxes at Site Guojiaba, the Three Gorges Reservoir[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2013,25(10):2065-3071.
APA Xiao, SB ,Wang, YC ,Liu, DF ,Yang, ZJ ,Lei, D ,&Zhang, C .(2013).Diel and seasonal variation of methane and carbon dioxide fluxes at Site Guojiaba, the Three Gorges Reservoir.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,25(10),2065-3071.
MLA Xiao, SB ,et al."Diel and seasonal variation of methane and carbon dioxide fluxes at Site Guojiaba, the Three Gorges Reservoir".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 25.10(2013):2065-3071.
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