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The characteristics and influencing factors of dissolved methane concentrations in Chongqing's central urban area in the Three Gorges Reservoir, China

文献类型：期刊论文

作者Qin, Yu1; Ouyang, Changyue1; Gou, Yujia1; Jiang, Chengyong1; Li, Zhe2
刊名ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期2022-05-24
页码13
ISSN号0944-1344
关键词Three Gorges Reservoir Dissolved CH4 concentration CH4 flux Generation pathways of CH4 Influence factors of CH4
DOI10.1007/s11356-022-20822-w
通讯作者Qin, Yu(qinyu54001@163.com)
英文摘要Methane (CH4) emissions from reservoirs have received widespread attention. The central urban area of Chongqing in the Three Gorges Reservoir area was selected as the study area in 2020. The temporal and spatial distribution of dissolved CH4 concentration and flux, key generation pathways, and influencing factors have been studied. The dissolved CH4 concentration in low-water-level period and impoundment period varied from 0.037 similar to 0.12 mu mol.L-1 and 0.11 similar to 0.23 mu mol.L-1, with the average values of (0.066 +/- 0.0067) mu mol.L-1 and (0.13 +/- 0.034) mu mol.L-1. The CH4 flux was (0.941 +/- 0.217) mu mol.m(-2).h(-1) in low-water-level period and (1.915 +/- 0.204) mu mol.m(-2).h(-1) in impoundment period. CH4 was produced by CO2 reduction and acetic acid fermentation, accounting for 17.95% and 82.05% of the total CH4 production, respectively. The dissolved CH4 concentration was significantly positively correlated with DO and NO3--N, and it is opposite with dissolved inorganic carbon. The dissolved CH4 concentration in this study area is affected by water environment (33.42%), inorganic nitrogen (29.60%), organic carbon (23.88%), and inorganic carbon (13.10%), and anthropogenic influences promoted dissolved CH4 concentration.
资助项目National Natural Science Foundation of China[51609026] ; Postgraduate Research Innovation Project of Chongqing Jiaotong University[CYS21352]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:000801072300001
源URL[http://119.78.100.138/handle/2HOD01W0/16284]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Qin, Yu
作者单位1.Chongqing Jiaotong Univ, Key Lab Hydraul & Waterway Engn, Minist Educ, Chongqing 400074, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Qin, Yu,Ouyang, Changyue,Gou, Yujia,et al. The characteristics and influencing factors of dissolved methane concentrations in Chongqing's central urban area in the Three Gorges Reservoir, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2022:13.
APA Qin, Yu,Ouyang, Changyue,Gou, Yujia,Jiang, Chengyong,&Li, Zhe.(2022).The characteristics and influencing factors of dissolved methane concentrations in Chongqing's central urban area in the Three Gorges Reservoir, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,13.
MLA Qin, Yu,et al."The characteristics and influencing factors of dissolved methane concentrations in Chongqing's central urban area in the Three Gorges Reservoir, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2022):13.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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