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

Abstract

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

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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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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