中国・サンシャ湾における炭酸塩系と生物学的硫黄の動態に対するマクロ藻養殖の影響

Ping Wang¹, Zheng-Xin Hu¹, Yu Xin¹

¹Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China.

Marine pollution bulletin

|February 17, 2026

まとめ

マクロ藻の採集は,溶けた有機炭素を大量に放出し,水産養殖地域をCO2源に変えます. 採集はまた,生体硫黄を増加させ,沿岸の炭素と硫黄のサイクルに影響を与えます.

科学分野:

海洋生態学海洋生態学
バイオジオケミカルサイクル
アクアカルチャー科学科学アクアカルチャー

背景:

マクロ藻類の養殖は,炭素の吸収と沿岸の優化を減らすために不可欠です.
マクロ藻の採集が炭素と硫黄の循環に与える影響は不明である.

研究の目的:

炭酸塩系と生物学的硫黄の放出に対するマクロ藻採集の影響を調査する.
フィールド収穫ゾーンにおける炭素と硫黄の循環を,制御されたメソコスム環境と比較する.

主な方法:

中国サンシャ湾のローテーション水産養殖地域 (Laminaria japonica - Gracilariopsis lemaneiformis) でのフィールドサンプリング.
Gracilariopsis lemaneiformis.のメソコスム栽培をインサイトで行いました.
炭酸系パラメータと生物学的硫黄化合物の分析.

主要な成果:

採集により,溶解した有機炭素と有機炭素の再鉱化が大幅に放出され,この地域はCO2の純源となった (平均海から空気へのフクロス:6.48 mmol m−2 d−1).
沈没するマクロ藻類の破片は,ジメチルスルフォニオプロピオネート産生と生物学的硫黄濃度を増大させた.
メソコスムの新鮮なマクロ藻類は,光合成による炭素固定と硫黄の放出を示し,残骸と再鉱化が支配するフィールド条件と対照的でした.

結論:

マクロ藻の採集は,主に有機炭素の再鉱化とゴミの投入を通じて,炭素と硫黄の循環を大幅に変化させます.
バイオジオケミカルサイクルと気候変動に対するマクロアルゲの栽培の長期的な影響を正確に評価するために,最適化された管理戦略が必要である.

キーワード:

生物学的硫黄は,生物学的硫黄である.二酸化炭素 (CO2) 源である.炭酸塩のダイナミクス培養されたマクロ藻類.サンシャ湾はサンシャ湾です.

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