气候变化领域集成服务门户(CCPortal): Temperature control on CO2 emissions from the weathering of sedimentary rocks

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DOI	10.1038/s41561-021-00805-1
	Temperature control on CO2 emissions from the weathering of sedimentary rocks
	Soulet G.; Hilton R.G.; Garnett M.H.; Roylands T.; Klotz S.; Croissant T.; Dellinger M.; Le Bouteiller C.
发表日期	2021
ISSN	1752-0894
卷号	14 期号:9
英文摘要	Sedimentary rocks can release carbon dioxide (CO2) during the weathering of rock organic carbon and sulfide minerals. This sedimentary carbon could act as a feedback on Earth’s climate over millennial to geological timescales, yet the environmental controls on the CO2 release from rocks are poorly constrained. Here, we directly measure CO2 flux from weathering of sedimentary rocks over 2.5 years at the Draix-Bléone Critical Zone Observatory, France. Total CO2 fluxes approached values reported for soil respiration, with radiocarbon analysis confirming the CO2 source from rock organic carbon and carbonate. The measured CO2 fluxes varied seasonally, with summer fluxes five times larger than winter fluxes, and were positively correlated with temperature. The CO2 release from rock organic carbon oxidation increased by a factor of 2.2 when temperature increased by 10 °C. This temperature sensitivity is similar to that of degradation of recent-plant-derived organic matter in soils. Our flux measurements identify sedimentary-rock weathering as a positive feedback to warming, which may have operated throughout Earth’s history to force the surface carbon cycle. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	carbon dioxide; carbon emission; degradation; oxidation; sedimentary rock; temperature gradient; weathering; France
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250868
作者单位	Department of Geography, Durham University, Durham, United Kingdom; NEIF Radiocarbon Laboratory, Glasgow, United Kingdom; Univ. Grenoble Alpes, INRAE, UR ETNA, Saint-Martin-d’Hères, France; Ifremer, GM, Plouzané, France; Department of Earth Sciences, University of Oxford, Oxford, United Kingdom
推荐引用方式 GB/T 7714	Soulet G.,Hilton R.G.,Garnett M.H.,et al. Temperature control on CO2 emissions from the weathering of sedimentary rocks[J],2021,14(9).
APA	Soulet G..,Hilton R.G..,Garnett M.H..,Roylands T..,Klotz S..,...&Le Bouteiller C..(2021).Temperature control on CO2 emissions from the weathering of sedimentary rocks.Nature Geoscience,14(9).
MLA	Soulet G.,et al."Temperature control on CO2 emissions from the weathering of sedimentary rocks".Nature Geoscience 14.9(2021).