Maximization of blue carbon sequestration in estuaries and freshwater lakes

河口和淡水湖蓝色碳封存最大化

• 批准号: 22H01601
• 负责人: 中山 恵介
• 金额: $ 11.15万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2026-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22H01601/
• 关键词: ブルーカーボン; 成層; 淡水湖沼; 水草; 炭素フラックス; 淡水カーボン; 植物プランクトン

SDGs目標13「Climate action：気候変動に具体的な対策を」では，カーボンニュートラルの推進を目指し，沿岸域の海洋生態系の光合成等を利用する「ブルーカーボン研究」が世界的に成されている．湖沼でも炭素吸収が期待できるが，炭素吸収ポテンシャルを正確に見積もるためには，小面積湖沼も含めた，水生生物・植物による正味の炭素貯留速度を明らかにしなくてはならない．本研究では，亜寒帯，温帯，亜熱帯の沿岸域から小面積湖沼までの9箇所の現場を対象とし，流れの影響を考慮した植物プランクトンや水草による呼吸・光合成，および溶存有機炭素の無機化による炭素の吸収・放出機構を解明する．具体的には，水草による炭素の放出・吸収を詳細に再現できる水草モデルの構築と実験的検証，閉鎖性水域特有の密度成層までを考慮できる数値計算モデルを展開・拡充することによって，炭素の複雑な生物化学的変化・輸送機構を解明する．炭素フラックスに与える水質や流入出の影響を明らかにするため，国内外の9箇所を対象として研究を進め，基礎的なデータを得ることができた．特に，烏原貯水池では過去のデータも踏まえて2010年から現在までのデータをまとめ，長期に渡る二酸化炭素の吸収量に成層場が与える影響を評価することが出来た．新年度の成果も踏まえて，STOTENに論文を投稿する予定である．また，水草の呼吸と光合成による炭素吸収・放出推定式を作成するため，ササバモを利用した屋外実験を実施し，溶存無機炭素（DIC）方程式のパラメーターを決定することができた．これまでの成果も含めて，JGRに論文が掲載された．さらに，室内実験を行い，流れと水草の形状変化の相互干渉を評価し，大気から水中への二酸化炭素の吸収量に与える影響を定量的に評価し，その成果がFMSに掲載された．Cigu Lagoonについても，STOTENに論文が掲載された．

SDGs Goal 13 "Climate action: specific policy responses to climate change,""Research on climate change in the world,""Research on climate change in the world," and "Research on climate change in the world,""Research on climate change in the world," and "Research on climate change in the world,""Research on climate change in the world,""Research on climate change in the world," Research on climate change in the world,"and" Research on photosynthesis in coastal marine ecosystems." Carbon absorption in lakes and marshes is expected to increase, carbon absorption is expected to increase, carbon absorption is expected to increase, In this study, the effects of flow on respiration, photosynthesis, and the mechanism of carbon absorption and emission in the inorganization of dissolved organic carbon were studied in 9 sites in the coastal zone, including small lakes and marshes in the cold zone, temperature zone and heat zone. Specifically, carbon emission and absorption from aquatic plants are reproduced in detail, and the structure of aquatic plants is verified. The density composition of closed water areas is considered. The calculation of carbon emission and absorption is carried out. The biochemical transformation and transportation mechanism of carbon is explained. The impact of carbon on water quality is discussed in detail. In particular, the Wuyuan reservoir has been in the past and now, in 2010, it has been in the past and now, in the long term, it has been in the process of acidification. The new year's achievements are scheduled for submission. The carbon absorption and emission estimation equation of aquatic respiration and photosynthesis is determined by the equation of dissolved inorganic carbon (DIC). The results of this research are contained in JGR papers. In recent years, indoor practice has been carried out to evaluate the interaction between the shape change of water plants and the absorption of carbon dioxide in water. The results have been disclosed in FMS.Cigu Lagoon has been published in STOTEN.

项目成果

INVESTIGATION OF OBLIQUE BREATHER INTERACTIONS

斜向呼吸相互作用的研究

• DOI: 10.2208/jscejhe.78.2_i_643
• 发表时间: 2022
• 期刊: Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
• 作者: 白石 悟;長島 一樹;細見 拓郎;高橋 綱己;張 国柱;金井 真樹;柳田 剛;NAKAYAMA Keisuke
• 通讯作者: NAKAYAMA Keisuke

Diffusive methane burst during a blue tide, wind-driven event in a meromictic lake

半积云湖中的蓝潮、风驱动事件期间扩散甲烷爆发

• DOI: 10.1016/j.marpolbul.2022.113792
• 发表时间: 2022
• 期刊: Marine Pollution Bulletin
• 影响因子: 5.8
• 作者: Sasaki Masafumi;Nakayama Keisuke;Maruya Yasuyuki
• 通讯作者: Maruya Yasuyuki

Coriolis effects on wind-driven upwelling in enclosed basins

科里奥利效应对封闭盆地风驱动上升流的影响

• DOI: 10.1016/j.csr.2023.104956
• 发表时间: 2023
• 期刊: Continental Shelf Research
• 影响因子: 2.3
• 作者: Ito Wataru;Nakayama Keisuke;Shintani Tetsuya
• 通讯作者: Shintani Tetsuya

TRANSFORMATION OF BREATHER OVER A SLOPING BOTTOM

倾斜底部呼吸器的转变

• DOI: 10.2208/kaigan.78.2_i_367
• 发表时间: 2022
• 期刊: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
• 作者: TASHITA Kento;NAKAYAMA Keisuke;SHINTANI Tetsuya
• 通讯作者: SHINTANI Tetsuya

Super submerged aquatic vegetation model in a stratified fluid

分层流体中的超淹没水生植被模型

• 发表时间: 2022
• 作者: H. Matsumoto;K. Matsumura;K. Nakayama;K. Komai;K. Tada
• 通讯作者: K. Tada