EVALUATION METHOD OF CO<sub>2</sub> EXCHANGE AT THE INTERTIDAL FLAT, THE SEA SFURFACE AND THE SEA BOTTOM OF AN ARTIFICIAL SALT MARSH IN URBAN COASTAL ZONE
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- ENDO Toru
- 大阪市立大学大学院 工学研究科都市系専攻
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- NAKANO Yusuke
- 大阪市港湾局計画整備部保全管理課（設計）
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- IKADA Noriaki
- 荏原環境プラント株式会社 プロジェクト営業統括部
Bibliographic Information
- Other Title
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- 都市沿岸域の人工湿地における干潟干出面、海水面および海底面のCO<sub>2</sub>交換の評価手法
- 都市沿岸域の人工湿地における干潟干出面、海水面および海底面のCO₂交換の評価手法
- トシ エンガンイキ ノ ジンコウ シッチ ニ オケル ヒガタ ホシダシメン 、 カイスイメン オヨビ カイテイメン ノ CO ₂ コウカン ノ ヒョウカ シュホウ
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Abstract
In order to examine the evaluation method of CO2 exchanges of the artificial salt marsh in urban coastal area, CO2 exchange of the intertidal flat and the sea surface were reviewed based on the measurement data by chamber method at Osaka nanko bird sanctuary in 2014-2015. Furthermore, the sea bottom CO2 emission was measured by conducting laboratory experiment using the sediment. After the gross photosynthesis rate of microalgae on the intertidal flat was approximated by three type models, it was suggested that CO2 absorption rate of the intertidal flat is able to estimate by the sediment temperature and the light intensity. It was thought thatCO2 emission of the intertidal flat is able to be expressed as a function of the sediment temperature. On the other hand, it is found that the measurement data by chamber method and the estimation data by bulk equation must be used selectively according to wind condition in order to estimate the air-sea CO2 exchange. Finally, it was thought that the sea bottom CO2 emission is desirable to estimated from the data of time variation of DIC concentration of the sea water.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72 (2), I_1447-I_1452, 2016
Japan Society of Civil Engineers