气候变化领域集成服务门户(CCPortal): Reducing global land-use pressures with seaweed farming

CCPortal

DOI	10.1038/s41893-022-01043-y
	Reducing global land-use pressures with seaweed farming
	Spillias, Scott; Valin, Hugo; Batka, Miroslav; Sperling, Frank; Havlik, Petr; Leclere, David; Cottrell, Richard S.; O'Brien, Katherine R.; McDonald-Madden, Eve
发表日期	2022
ISSN	2398-9629
页码	24
英文摘要	Agricultural expansion to meet humanity's growing needs for food and materials is a leading driver of land-use change, exacerbating climate change and biodiversity loss. Seaweed biomass farmed in the ocean could help reduce demand for terrestrial crops and reduce agricultural greenhouse gas emissions by providing a substitute or supplement for food, animal feed and biofuels. Here we model the global expansion potential of seaweed farming and explore how increased seaweed utilization under five different scenarios that consider dietary, livestock feed and fuel production seaweed usage may affect the environmental footprint of agriculture. For each scenario, we estimate the change in environmental impacts on land from increased seaweed adoption and map plausible marine farming expansion on the basis of 34 commercially important seaweed species. We show that similar to 650 million hectares of global ocean could support seaweed farms. Cultivating Asparagopsis for ruminant feed provided the highest greenhouse gas mitigation of the scenarios considered (similar to 2.6 Gt CO(2)e yr(-1)). Substituting human diets at a rate of 10% globally is predicted to spare up to 110 million hectares of land. We illustrate that global production of seaweed has the potential to reduce the environmental impacts of terrestrial agriculture, but caution is needed to ensure that these challenges are not displaced from the land to the ocean.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000920854200007
来源期刊	NATURE SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272787
作者单位	University of Queensland; University of Queensland; International Institute for Applied Systems Analysis (IIASA); Commonwealth Scientific & Industrial Research Organisation (CSIRO); University of Tasmania; University of Tasmania; University of Queensland
推荐引用方式 GB/T 7714	Spillias, Scott,Valin, Hugo,Batka, Miroslav,et al. Reducing global land-use pressures with seaweed farming[J],2022:24.
APA	Spillias, Scott.,Valin, Hugo.,Batka, Miroslav.,Sperling, Frank.,Havlik, Petr.,...&McDonald-Madden, Eve.(2022).Reducing global land-use pressures with seaweed farming.NATURE SUSTAINABILITY,24.
MLA	Spillias, Scott,et al."Reducing global land-use pressures with seaweed farming".NATURE SUSTAINABILITY (2022):24.