MECHANISM OF CLIMATE CHANGE MITIGATION IN MANGROVE-SEAGRASS COUPLED ECOSYSTEM -MATHEMATICAL MODEL ANALYSIS-
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- SOHMA Akio
- 大阪市立大学大学院 工学研究科都市系専攻
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- KONISHI Hayato
- 株式会社NJS プロジェクトマネジメント部
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- TODA Shinji
- 大阪市立大学大学院 工学研究科都市系専攻
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- NAKURA Ryota
- 株式会社大林組
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- SHIBUKI Hisashi
- みずほ情報総研株式会社 サイエンスソリユーシヨン部
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- MOKI Hirotada
- 港湾空港技術研究所 沿岸環境研究グループ
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- KUWAE Tomohiro
- 港湾空港技術研究所 沿岸環境研究グループ
Bibliographic Information
- Other Title
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- マングローブ・海草複合生態系による気候変動緩和のメカニズム～数理モデル解析～
- マングローブ ・ カイソウ フクゴウ セイタイケイ ニ ヨル キコウ ヘンドウ カンワ ノ メカニズム : スウリ モデル カイセキ
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Abstract
<p> Mangroves and seagrass have the potential of high climate change mitigation capacity. This capacity is governed by a series of processes: absorption of atmospheric CO2, fixation of absorbed carbon by biological production, and storage of fixed carbon in deep sediments, however, our knowledge concerned with these processes is still far from complete. In this study, in order to clarify the mechanisms and the controlling factors of these processes, we developed a mangrove-seagrass coupled ecosystem model that comprehensively incorporates biochemical and physics processes in both the pelagic and benthic systems, and applied it to the Yutsun area, Iriomote Island, Okinawa Prefecture, where mangroves and seagrass ecosystem are found. As a result of the analysis, the main factors of carbon fixation were net primary production of mangroves and seagrasses and shell formation of benthic faunas. Mangroves also promoted the absorption of CO2 from the atmosphere, storing 72% of the absorbed carbon and discharging 28% to offshore. On the other hand, seagrasses suppressed the release of CO2 to the atmosphere and took in carbon from offshore, of which 62% of the carbon stored by seagrasses was from offshore.</p>
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) 76 (2), I_961-I_966, 2020
Japan Society of Civil Engineers