Carbon storage due to aquatic plants in stratification for climate change mitigation

• Project/Area Number: 18H01545
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 22040:Hydroengineering-related
• Research Institution: Kobe University
• Principal Investigator: 中山 恵介 神戸大学, 工学研究科, 教授 (60271649)
• Co-Investigator(Kenkyū-buntansha): 矢島 啓 島根大学, 学術研究院環境システム科学系, 教授 (10283970) ; 矢野 真一郎 九州大学, 工学研究院, 教授 (80274489) ; 駒井 克昭 北見工業大学, 工学部, 教授 (90314731)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000); Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2018: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
• Keywords: CO2 / DIC / TA / stratification / global warming / 成層 / 光合成 / 水草 / 内部波 / アマモ

Outline of Annual Research Achievements

植物等の光合成を利用したCO2の吸収を促進し，気候変動を緩和しようという試みが世界的になされている．いわゆるブルーカーボンの増強である．水草等が存在する水域は，日射や海水への淡水の流入により，成層が形成されるだけでなく，植生の存在による流れとの相互干渉により，流況が複雑になり，CO2の吸収に重要なスカラー量の鉛直フラックスが大きく影響を受ける．しかし，現在一般的に利用されているCO2吸収量の推定方法については，水域にどの程度の水草が存在するかを推定することで，炭素の吸収量を見積もるという簡易的なものにとどまっている．そこで本研究では，水生植物を利用した植生スケールの室内実験に基づいて数値計算モデルの開発を行い，波・流れと水生植物との相互干渉による複雑なCO2の輸送機構を解明するだけでなく，閉鎖性水域において水生植物によるCO2の放出と吸収に関する現地計測を行い，一般化を目指して数値計算モデルを開発することを目的とする．
発泡ポリプロピレンを水草に見立てることで詳細な室内実験を実施し，本プロジェクトで開発したSubmerged Aquatic Vegetation model（SAV model）の再現性をあらためて検証した．さらに，現地へ適用するために，数万本のSAVを1本で代表させるモデルの開発にも成功し，そのモデルを利用することで，現地において炭素の解析を行うためのSpatially integrated SAV model（SiSAV model）の開発にも成功し，現地スケールでの評価が可能となった．また，現地における簡易であるが高精度な再現モデルの開発も行い，その成果はScience of the Total Environmentに掲載された．よって，最終目的である水草と流動を錬成させた実スケールでの数値モデルの構築を完了することができた．

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] The University of Western Australia(オーストラリア)
• [Int'l Joint Research] China Medical University/Academia SINICA(中国)
• [Int'l Joint Research] University of Waterloo/Queen's University(カナダ)
• [Int'l Joint Research] University of Wester Australia(オーストラリア)
• [Int'l Joint Research] University of Waterloo(カナダ)
• [Int'l Joint Research] Queen's University(カナダ)
• [Int'l Joint Research] Academia SINICA(中国)
• [Int'l Joint Research] China Medical University(中国)
• [Int'l Joint Research] The University of Western Australia/Queensland University(オーストラリア)
• [Int'l Joint Research] China Medical University/Academia Sinica(中国)
• [Int'l Joint Research] University of Waterloo/Queen's University(カナダ)
• [Int'l Joint Research] The University of Western Australia/Queensland University(オーストラリア)
• [Int'l Joint Research] China Medical University/Academia Sinica(中国)
• [Int'l Joint Research] University of Waterloo/Queen's University(カナダ)
• [Journal Article] Effect of dissolved oxygen on methane production from bottom sediment in a eutrophic stratified lake (2023)
  • Author(s): Maruya Yasuyuki、Nakayama Keisuke、Sasaki Masafumi、Komai Katsuaki
  • Journal Title: Journal of Environmental Sciences Volume: 125 Pages: 61-72
  • DOI: 10.1016/j.jes.2022.01.025
  • Peer Reviewed / Open Access
• [Journal Article] The impacts of the hydraulic retention effect and typhoon disturbance on the carbon flux in shallow subtropical mountain lakes (2022)
  • Author(s): Lin Hao-Chi、Tsai Jeng-Wei、Tada Kazufumi、Matsumoto Hiroki、Chiu Chih-Yu、Nakayama Keisuke
  • Journal Title: Science of The Total Environment Volume: 803 Pages: 150044-150044
  • DOI: 10.1016/j.scitotenv.2021.150044
  • NAID: 120007162587
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] EFFECT OF PYCNOCLINE THICKNESS ON INTERNAL SOLITARY WAVE BREAKING OVER A SLOPE AND ITS CLASSIFICATION (2021)
  • Author(s): IWATA Ryo、NAKAYAMA Keisuke、SATO Takahiro、SHINTANI Tetsuya
  • Journal Title: B1 Volume: 77 Issue: 1 Pages: 59-73
  • DOI: 10.2208/jscejhe.77.1_59
  • NAID: 130008054604
  • ISSN: 2185-467X
  • Peer Reviewed / Open Access
• [Journal Article] VALIDATION OF SAV MODEL USING LABORATORY EXPERIMENTS (2021)
  • Author(s): SASAKI Daisuke、MATSUMOTO Hiroki、NAKAYAMA Keisuke、TADA Kazufumi、LIN Hao-Chi、HAMADA Takuya、SHINTANI Tetsuya
  • Journal Title: B3 Volume: 77 Issue: 2 Pages: I_205-I_210
  • DOI: 10.2208/jscejoe.77.2_i_205 10.2208/jscejoe.77.2_I_205
  • NAID: 130008094143
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access
• [Journal Article] NUMERICAL SIMULATION OF DISSOLUBED INORGANIC CARBON CONSIDERING EELGRASS RESPIRATION AND PHOTOSYNTHESIS (2021)
  • Author(s): MATSUMOTO Hiroki、NAKAYAMA Keisuke、KOMAI Katsuaki、TADA Kazufumi、LIN Hao-Chi、SHINTANI Tetsuya
  • Journal Title: B3 Volume: 77 Issue: 2 Pages: I_613-I_618
  • DOI: 10.2208/jscejoe.77.2_i_613 10.2208/jscejoe.77.2_I_613
  • NAID: 130008094211
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access
• [Journal Article] EFFECT OF PHOTOSYNTHETIC ACTIVITY ON THE ABSORPTION AND RELEASE OF DISSOLVED INORGANIC CARBON BY EELGRASS (2021)
  • Author(s): KOMAI Katsuaki、SATO Tatsuya、CHIBA Toshiyuki、NAKAYAMA Keisuke
  • Journal Title: B3 Volume: 77 Issue: 2 Pages: I_565-I_570
  • DOI: 10.2208/jscejoe.77.2_i_565 10.2208/jscejoe.77.2_I_565
  • NAID: 130008094217
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access
• [Journal Article] CLASSIFICATION OF BREATHER BREAKING OVER A UNIFORM SLOPE (2021)
  • Author(s): TASHITA Kento、NAKAYAMA Keisuke、SHINTANI Tetsuya
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 77 Issue: 2 Pages: I_343-I_348
  • DOI: 10.2208/kaigan.77.2_i_343 10.2208/kaigan.77.2_I_343
  • NAID: 130008113334
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access
• [Journal Article] INFLUENCING FACTORS ON AIR-SEA CO₂ FLUX AT CIGU LAGOON, TAIWAN (2021)
  • Author(s): KAWAHARA Yuki、TSAI Jeng-Wei、LIN Hiroyuki、MATSUMOTO Hiroki、HUNG Meng-chi、HSUEH Mei Li、NAKAYAMA Keisuke
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 77 Issue: 2 Pages: I_841-I_846
  • DOI: 10.2208/kaigan.77.2_i_841 10.2208/kaigan.77.2_I_841
  • NAID: 130008113448
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] NUMERICAL MODELING OF CO₂ DYNAMICS IN SEAWATER CONSIDERING EFFECTS OF FRESHWATER INFLOW IN THE YATSUSHIRO SEA (2021)
  • Author(s): KOMORI Hiroto、XIONG Bing、SAITO Naoki、HAO Lin、CHI Baixin、YANO Shinichiro、KOMAI Katsuaki、NAKAYAMA Keisuke
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 77 Issue: 2 Pages: I_847-I_852
  • DOI: 10.2208/kaigan.77.2_i_847 10.2208/kaigan.77.2_I_847
  • NAID: 130008113449
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access
• [Journal Article] EFFECTS OF A TYPHOON ON CARBON FLUX IN A SHALLOW STRATIFIED LAKE (2021)
  • Author(s): LIN Hao Chi、NAKAYAMA Keisuke、TADA Kazufumi、CHIU Chih Yu、TSAI Jeng Wei
  • Journal Title: B1 Volume: 77 Issue: 2 Pages: I_1051-I_1056
  • DOI: 10.2208/jscejhe.77.2_i_1051 10.2208/jscejhe.77.2_I_1051
  • NAID: 130008160070
  • ISSN: 2185-467X
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Influence of thermal stratification on seasonal net ecosystem production and dissolved inorganic carbon in a shallow subtropical lake (2021)
  • Author(s): H.C. Lin, C.Y. Chiu, J.W. Tsai, W.C. Liu, K. Tada, K. Nakayama
  • Journal Title: Journal of Geophysical Research: Biogeosciences Volume: online Pages: 1-17
  • DOI: 10.1029/2020jg005907
  • NAID: 120007124117
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] DEVELOPMENT OF A MODEL FOR ESTIMATING OF VERTICAL DISTRIBUTION OF DISSOLVED INORGANIC CARBON DUE TO EELGRASS IN A STRATIFIED FLUID (2020)
  • Author(s): 松本大輝, 中山恵介, 駒井克明, 田多一史, 佐々木大輔, 渡辺謙太, 久保篤史, 丸谷靖幸, 駒井克昭
  • Journal Title: B3 Volume: 76 Issue: 2 Pages: I_869-I_874
  • DOI: 10.2208/jscejoe.76.2_i_869 10.2208/jscejoe.76.2_I_869
  • NAID: 130007910356
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access
• [Journal Article] DEVELOPMENT OF SUBMERGED AQUATIC VEGETATION MODEL CONSIDERING BRANCH (2020)
  • Author(s): 佐々木大輔, 中山恵介, 新谷哲也, 田多一史, 松本大輝, 駒井克昭
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 76 Issue: 2 Pages: I_1075-I_1080
  • DOI: 10.2208/kaigan.76.2_i_1075 10.2208/kaigan.76.2_I_1075
  • NAID: 130007935653
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access
• [Journal Article] FIELD SURVEY ON CO₂ IN SEAWATER FOR REVEALING BLUE CARBON DYNAMICS IN THE YATSUSHIRO SEA (2020)
  • Author(s): 齋藤直輝, 熊柄, 小森博仁, 矢野 真一郎, 中山恵介, 駒井克昭, 矢島啓
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 76 Issue: 2 Pages: I_901-I_906
  • DOI: 10.2208/kaigan.76.2_i_901 10.2208/kaigan.76.2_I_901
  • NAID: 130007935927
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access
• [Journal Article] Terrestrial loads of colored dissolved organic matter drive inter-annual carbon flux in contrasting lakes: Influence of decreased monsoon and typhoon rainfall (2020)
  • Author(s): C. Chiu, H. Lin, J. Jones, J. Rusak, K. Nakayama, T. Kratz, W. Liu, S. Tang, J. Tsai
  • Journal Title: Science of the Total Environment Volume: 717 Pages: 137052-137052
  • DOI: 10.1016/j.scitotenv.2020.137052
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Integration of submerged aquatic vegetation motion within hydrodynamic models (2020)
  • Author(s): K. Nakayama, Y. Nakagawa, Y. Nakanishi, T. Kuwae, K. Watanabe, H. Moki, K. Komai, K. Tada, J.W. Tsai, M.R. Hipsey
  • Journal Title: Water Resources Research Volume: 56
  • DOI: 10.1029/2020wr027369
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Modelling dissolved inorganic carbon considering submerged aquatic vegetation (2020)
  • Author(s): K. Nakayama, K. Komai, K. Tada, H. Lin, K. Yajima, S. Yano, K. Watanabe, M.R. Hipsey, J.W. Tsai
  • Journal Title: Ecological Modelling Volume: 431 Pages: 109188-109188
  • DOI: 10.1016/j.ecolmodel.2020.109188
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Breathers in a three-layer fluid (2020)
  • Author(s): K. Nakayama, K. Lamb
  • Journal Title: Journal of Fluid Mechanics Volume: 903
  • DOI: 10.1017/jfm.2020.653
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Breaking of internal Kelvin wave shoaling on a slope (2020)
  • Author(s): K. Nakayama, Takahiro Sato, Kojiro Tani, Leon Boegman and Ichiro Fujita
  • Journal Title: Journal of Geophysical Research Volume: 125
  • DOI: 10.1029/2020jc016120
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Nonlinear wave equations for free surface flow over a bump (2020)
  • Author(s): S. Sakaguchi, K. Nakayama, Thuy Thi Thu Vu, K. Komai, Peter Nielsen
  • Journal Title: Coastal Engineering Journal Volume: 62 Pages: 1712837-1712837
  • NAID: 120006894033
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] INFLUENCE OF SEAWATER EXCHANGE WITH ARIAKE SEA ON STRATIFED FLOW FIELD IN YATSUSHIRO SEA (2019)
  • Author(s): 伊藤航, 中山恵介, 矢野真一郎，熊柄，齋藤直輝，駒井克昭，矢島啓
  • Journal Title: B3 Volume: 75 Issue: 2 Pages: 977-982
  • DOI: 10.2208/jscejoe.75.i_977 10.2208/jscejoe.75.I_977
  • NAID: 130007725095
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access
• [Journal Article] THE EXAMINATION OF DEFLECTED VEGETATION HEIGHT CONSIDERING THE RATIO OF THE LENGTH OF SAV AND WATER DEPTH (2019)
  • Author(s): 佐々木大輔, 中山恵介, 中西佑太郎，中川康之，田多一史，駒井克昭
  • Journal Title: B3 Volume: 75 Issue: 2 Pages: 504-509
  • DOI: 10.2208/jscejoe.75.i_504 10.2208/jscejoe.75.I_504
  • NAID: 130007725065
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access
• [Journal Article] FLOW ANALYSIS IN EELGRASS MEADOW WITH OSCILLATION FLOW FIELD (2019)
  • Author(s): 田多一史, 中山恵介, 中西佑太郎, 佐々木大輔, 駒井克昭
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 75 Issue: 2 Pages: 25-30
  • DOI: 10.2208/kaigan.75.i_25 10.2208/kaigan.75.I_25
  • NAID: 130007730201
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access
• [Journal Article] 人工衛星データを用いたアマモ場分布計測と汽水域での溶存無機炭素量を用いた検討 (2019)
  • Author(s): 駒井克昭, 早川博, 佐藤辰哉, 中山恵介
  • Journal Title: 土木学会論文集B2（海岸工学） Volume: 75 Pages: 397-402
  • NAID: 130007940123
  • Peer Reviewed / Open Access
• [Journal Article] 密度躍層の厚さ変化に伴った内部波の砕波形態に関する研究 (2019)
  • Author(s): 岩田遼, 佐藤啓央, 中山恵介
  • Journal Title: 土木学会論文集B1（水工学） Volume: 75 Pages: 769-774
  • NAID: 130007940239
  • Peer Reviewed / Open Access
• [Journal Article] Classification of internal solitary wave breaking over a slope (2019)
  • Author(s): K. Nakayama, T. Sato, K. Shimizu, L. Boegman
  • Journal Title: Physical Review Fluids Volume: 4 Pages: 014801-014801
  • DOI: 10.1103/physrevfluids.4.014801
  • NAID: 120006777077
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] ANALYSIS OF DISSOLVED INORGANIC CARBON DUE TO SEAGRASS IN A STRATIFIED FLOW (2018)
  • Author(s): 田多一史, 中山恵介, 駒井克昭, Jeng-Wei Tsai, 佐藤之信, 桑江朝比呂
  • Journal Title: B3 Volume: 74 Issue: 2 Pages: 444-449
  • DOI: 10.2208/jscejoe.74.i_444 10.2208/jscejoe.74.I_444
  • NAID: 130007482514
  • ISSN: 2185-4688
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] DEVELOPMENT OF CO₂ PARTIAL PRESSURE ECOLOGICAL MODEL IN THE SEAGRASS MEADOW (2018)
  • Author(s): 田多一史, 中山恵介, 桑江朝比呂
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 74 Issue: 2 Pages: 1237-1242
  • DOI: 10.2208/kaigan.74.i_1237 10.2208/kaigan.74.I_1237
  • NAID: 130007503966
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access
• [Journal Article] DEVELOPMENT OF A SEAGRASS MODEL IN WAVES AND UNIDIRECTIONAL CURRENTS (2018)
  • Author(s): 中西佑太郎, 中山恵介, 中川康之, 茂木博匡, 田多一史, Matthew HIPSEY, 桑江朝比呂
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 74 Issue: 2 Pages: 31-36
  • DOI: 10.2208/kaigan.74.i_31 10.2208/kaigan.74.I_31
  • NAID: 130007504043
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] BREAKER TYPES AND MASS TRANSPORT OF INTERNAL SOLITARY WAVES OVER A UNIFORM SLOPE IN TWO-LAYER SYSTEM (2018)
  • Author(s): 佐藤啓央, 中山恵介, 清水健司, Leon BOEGMAN
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 74 Issue: 2 Pages: 655-660
  • DOI: 10.2208/kaigan.74.i_655 10.2208/kaigan.74.I_655
  • NAID: 130007504145
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] IMPROVEMENT OF FULLY-NONLINEAR AND STRONGLY-DISPERSIVE WAVE MODEL AND APPLICATION TO A WAVE FIELD OVER A BUMP (2018)
  • Author(s): 阪口詩乃, 中山恵介, Thuy Thi Thu VU, 駒井克昭, Peter NIELSEN
  • Journal Title: Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) Volume: 74 Issue: 2 Pages: 1-6
  • DOI: 10.2208/kaigan.74.i_1 10.2208/kaigan.74.I_1
  • NAID: 130007503918
  • ISSN: 1883-8944, 1884-2399
  • Peer Reviewed / Int'l Joint Research
• [Presentation] EVALUATION OF HYDRODYNAMIC EFFECTS ON BLUE CARBON DYNAMICS IN THE YATSUSHIRO SEA (2020)
  • Author(s): Bing Xiong, Naoki Saito, Hiroto Komori, Shinichiro Yano, Keisuke Nakayama, Katsuaki Komai, Kei Yajima
  • Organizer: Proc. 22ndInt. Conf. on IAHR-APD
  • Int'l Joint Research
• [Presentation] FIELD OBSERVATION ON BLUE CARBON DYNAMICS IN THE YATSUSHIRO SEA CONSIDERING INFLUENCE OF STRATIFICATION (2020)
  • Author(s): Naoki Saito, Xion Bing, Hiroto Komori, Shinichiro Yano, Keisuke Nakayama, Katsuaki Komai, Kei Yajima
  • Organizer: Proc. 22ndInt. Conf. on IAHR-APD
  • Int'l Joint Research