气候变化领域集成服务门户(CCPortal): Modeling carbon dioxide removal via sinking of particulate organic carbon from macroalgae cultivation

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DOI	10.3389/fmars.2024.1359614
	Modeling carbon dioxide removal via sinking of particulate organic carbon from macroalgae cultivation
	Chen, Si; Strong-Wright, Jago; Taylor, John R.
发表日期	2024
EISSN	2296-7745
起始页码	11
卷号	11
英文摘要	Macroalgae cultivation is receiving growing attention as a potential carbon dioxide removal (CDR) strategy. Macroalgae biomass harvesting and/or intentional sinking have been the main focus of research efforts. A significant amount of biomass is naturally lost through erosion and breakage of cultivated or naturally growing seaweed, but the contribution of the resulting particulates to carbon sequestration is relatively unexplored. Here, we use a fully coupled kelp-biogeochemistry model forced by idealized parameters in a closed system to estimate the potential of macroalgal-derived particulate organic carbon (POC) sinking as a CDR pathway. Our model indicates that at a kelp density of 1.1 fronds m-3, macroalgal POC sinking can export 7.4 times more carbon to the deep sea (depths > 500m) and remove 5.2 times more carbon from the atmosphere (equivalent to an additional 336.0 gC m(-2) yr(-1)) compared to the natural biological pump without kelp in our idealized closed system. The results suggest that CDR associated with POC sinking should be explored as a possible benefit of seaweed farming and point to the need for further study on organic carbon partitioning and its bioavailability to quantify the effectiveness and impacts of macroalgal cultivation as a CDR strategy.
英文关键词	macroalgae cultivation; carbon dioxide removal; carbon sequestration; particulate organic carbon; kelp; climate change mitigation; ocean biogeochemical modeling; ocean-based solution
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:001174723900001
来源期刊	FRONTIERS IN MARINE SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296242
作者单位	University of Cambridge
推荐引用方式 GB/T 7714	Chen, Si,Strong-Wright, Jago,Taylor, John R.. Modeling carbon dioxide removal via sinking of particulate organic carbon from macroalgae cultivation[J],2024,11.
APA	Chen, Si,Strong-Wright, Jago,&Taylor, John R..(2024).Modeling carbon dioxide removal via sinking of particulate organic carbon from macroalgae cultivation.FRONTIERS IN MARINE SCIENCE,11.
MLA	Chen, Si,et al."Modeling carbon dioxide removal via sinking of particulate organic carbon from macroalgae cultivation".FRONTIERS IN MARINE SCIENCE 11(2024).