| Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003 |
| Gao, Xuelu
; Song, Jinming
|
| 发表期刊 | JOURNAL OF MARINE SYSTEMS
 |
| ISSN | 0924-7963
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| 2008
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| 卷号 | 74期号:1-2页码:343-350 |
| 关键词 | Dissolved Oxygen
Spatio-temporal Distribution
Oxygen Flux
Changjiang Estuary
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| 产权排序 | Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci; Chinese Acad Sci, Yantai Inst Coastal Zone Res Sustainable Dev |
| 通讯作者 | Song, JM, Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
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| 作者部门 | 污染过程与控制实验室
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| 英文摘要 | The field observation of this study was carried out in the Changjiang Estuary from May 19 to 26,2003, just a few days before the Three Gorges Dam began to store water. A total of 29 stations, including 2 anchor stations, were distributed through almost the whole salinity gradient Based on the data gained from these stations, the biogeochemical characteristics of dissolved oxygen (DO) were examined. Spatial distribution of DO concentrations showed the pattern that it increased in a downriver direction. DO concentration generally varied within a narrow range of 733-8.10 mg l(-1) in the freshwater region and the west part of the mixed water region, and after that it increased rapidly. In vertical direction, the differences in DO concentrations between surface and 2 m above the bottom were big at the stations with water depths exceeding 20 m; DO concentration up to 14.88 mg l(-1) was recorded at the sea surface, while at 2 m above the bottom its concentration was only about 4 mg l(-1). The fluctuation in DO concentrations was small during a period of 48 h in the mixed water region and 2 m above the bottom of the seawater region; while it was large during the same period in the seawater region for surface and 5 m below the surface layer, and a maximum variation from 8.77 to 12.66 mg l(-1) in 4 h was recorded. Oxygen fluxes also showed a marked spatio-temporal variation. As a whole, the freshwater region and mixed water region were an oxygen sink while the seawater region was a source. Relationships between dissolved oxygen and some biogeochemical parameters which could markedly influence its spatio-temporal distribution were discussed in this paper. (C) 2008 Elsevier B.V. All rights reserved. |
| 资助机构 | National Basic Research Program of China [2007CB407305]; Chinese Academy of Sciences [05-2-JC-90]
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| 收录类别 | SCI
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| 语种 | 英语
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.yic.ac.cn/handle/133337/3550
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| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室
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推荐引用方式
GB/T 7714 |
Gao, Xuelu,Song, Jinming. Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003[J]. JOURNAL OF MARINE SYSTEMS,2008,74(1-2):343-350.
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| APA |
Gao, Xuelu,&Song, Jinming.(2008).Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003.JOURNAL OF MARINE SYSTEMS,74(1-2),343-350.
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| MLA |
Gao, Xuelu,et al."Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003".JOURNAL OF MARINE SYSTEMS 74.1-2(2008):343-350.
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