三峡库区干流及库湾支流(朱衣河)夏季CO2 分压及扩散通量

doi:10.3969/j.issn.1007-2861.2015.01.011

上海大学学报(自然科学版) ›› 2016, Vol. 22 ›› Issue (4): 497-504.doi: 10.3969/j.issn.1007-2861.2015.01.011

三峡库区干流及库湾支流(朱衣河)夏季CO₂ 分压及扩散通量

魏浩斌1, 吴学谦1, 操满1, 傅家楠1, 贾晓斌1, 邓兵2, 汪福顺1

1. 上海大学环境与化学工程学院, 上海200444;
2. 华东师范大学河口海岸学国家重点实验室, 上海200062

收稿日期:2015-05-21 出版日期:2016-08-30 发布日期:2016-08-30
通讯作者: 汪福顺(1976—), 男, 教授, 博士, 研究方向为地球化学. E-mail: fswang@shu.edu.cn
作者简介:汪福顺(1976—), 男, 教授, 博士, 研究方向为地球化学. E-mail: fswang@shu.edu.cn
基金资助:
国家水体污染控制与治理科技重大专项(2012ZX07104-001); 国家自然科学基金资助项目(41273128, 41473082)

Partial pressure and diffusion flux of dissolved carbon dioxide in mainstream and tributary (Zhuyi River) of the Three Gorges Reservoir in summer

WEI Haobin1, WU Xueqian1, CAO Man1, FU Jianan1, JIA Xiaobin1, DENG Bing2, WANG Fushun1

1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China;
2. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

Received:2015-05-21 Online:2016-08-30 Published:2016-08-30

摘要/Abstract

摘要：

以三峡库区中长江干流及其支流朱衣河作为主要研究对象, 于2013 年5—7 月对该研究区域干支流的CO₂ 分压进行了研究, 并计算出CO₂ 的扩散通量. 研究结果表明, 在水体剖面上表层水体CO₂ 分压最小; 随着水深增加, CO₂ 分压急剧增大, 到达10 m 后才保持稳定. 干支流表层水体CO₂ 分压的分布和扩散通量差异显著. 5—7 月, 干流水体表层CO₂分压为220.8~268.0 Pa, CO₂扩散通量为51.05 mmol·m⁻²·d⁻¹; 支流水体表层CO2 分压为14.9~190.3 Pa, 3 个月的CO2 扩散通量分别为0.42, −0.12 和20.83 mmol·m⁻²·d⁻¹. 研究结果表明, 支流释放的CO₂ 远小于干流.

关键词: CO₂ 分压 , CO₂ 扩散通量 , 朱衣河, 三峡库区

Abstract:

The mainstream and tributary of the Three Gorges Reservoir were investigated from May 2013 to July 2013 to understand the distribution of the partial pressure of carbon dioxide. The results show that, along the water column of the tributary (Zhuyi River), the lowest value of the partial pressure of carbon dioxide appears in surface water, and increases rapidly with depth. Below 10 meters in depth, the partial pressure of carbon dioxide becomes stable. There are significant differences of the partial pressure of carbon dioxide in surface water between mainstream and tributaries. During the period of investigation,
the partial pressure of carbon dioxide in the surface water of the mainstream is 220.8~268.0 Pa, with an average CO₂ emission fluxes of 51.05 mmol·m⁻²·d⁻¹. The partial pressure of carbon dioxide in the surface water of tributary (Zhuyi River) is 14.9~190.3 Pa. Emission flux of CO₂ in the three months are 0.42, −0.12 and 20.83 mmol·m⁻²·d⁻¹. The result indicates that the tributary Zhuyi River emits less CO₂ than the mainstream.

Key words: diffusion flux of carbon dioxide , partial pressure of carbon dioxide , Zhuyi River, Three Gorges Reservoir

魏浩斌1, 吴学谦1, 操满1, 傅家楠1, 贾晓斌1, 邓兵2, 汪福顺1. 三峡库区干流及库湾支流(朱衣河)夏季CO₂ 分压及扩散通量[J]. 上海大学学报(自然科学版), 2016, 22(4): 497-504.

WEI Haobin1, WU Xueqian1, CAO Man1, FU Jianan1, JIA Xiaobin1, DENG Bing2, WANG Fushun1. Partial pressure and diffusion flux of dissolved carbon dioxide in mainstream and tributary (Zhuyi River) of the Three Gorges Reservoir in summer[J]. Journal of Shanghai University（Natural Science Edition）, 2016, 22(4): 497-504.

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三峡库区干流及库湾支流(朱衣河)夏季CO₂ 分压及扩散通量

Partial pressure and diffusion flux of dissolved carbon dioxide in mainstream and tributary (Zhuyi River) of the Three Gorges Reservoir in summer

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