2022 Fiscal Year Final Research Report
Study on greenhouse gas emission from an artificial pond
Project/Area Number |
20K15636
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 41050:Environmental agriculture-related
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Research Institution | Kyoto University |
Principal Investigator |
Sakabe Ayaka 京都大学, 白眉センター, 特定助教 (40757936)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | ため池 / 渦相関法 / メタン / 二酸化炭素 / 温室効果ガス |
Outline of Final Research Achievements |
There are many irrigation ponds for agriculture in Setouchi area. Photosynthesis of algae may contribute to the absorption of carbon dioxide, while sediment in the bottom of ponds may contribute to the emission of methane under anaerobic environment. However, there was little study that evaluated greenhouse gas emissions from irrigation ponds. In this study, we observed carbon dioxide and methane gas exchanges over a pond by eddy covariance method in Kakogawa city, Hyogo prefecture. We obtained data for two years, and analyzed the relationship between greenhouse gas dynamics and environmental factors to elucidate the mechanism regulating greenhouse gas dynamics in the pond.
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Free Research Field |
生物環境物理学
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Academic Significance and Societal Importance of the Research Achievements |
本研究の目的は,農業という人間活動によって造成される「ため池」が二酸化炭素吸収源,メタン放出源として温室効果ガス収支に果たす役割を解明することである.メタンは重要な温室効果ガスであり,内陸の水圏は主要なメタン放出源として認識されているが,その放出量の推定には未だ不確実性が大きい.内陸水圏からのメタン放出を削減するには,実測データに基づくメタン放出量の定量化と変動メカニズムの理解が必要である.本研究はため池生態系に着目し,2年の実測データを取得した.得られた知見は,ため池が温室効果ガス収支に果たす役割の理解に役立ち,放出量削減に向けたため池の管理に貢献すると考える.
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