globalchange  > 气候变化与战略
DOI: 10.1038/s41561-020-0563-8
论文题名:
Materials and pathways of the organic carbon cycle through time
作者: Galvez M.E.; Fischer W.W.; Jaccard S.L.; Eglinton T.I.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2020
卷: 13, 期:8
起始页码: 535
结束页码: 546
语种: 英语
英文关键词: biomineralization ; biosphere ; canonical analysis ; carbon cycle ; complexity ; lithosphere ; mantle source ; organic carbon ; photosynthesis
英文摘要: The cycle of organic carbon through the atmosphere, oceans, continents and mantle reservoirs is a hallmark of Earth. Over geological time, chemical exchanges between those reservoirs have produced a diversity of reduced carbon materials that differ in their molecular structures and reactivity. This reactive complexity challenges the canonical dichotomy between the surface and deep, short-term and long-term organic carbon cycle. Old and refractory carbon materials are not confined to the lithosphere but are ubiquitous in the surface environment, and the lithosphere hosts various forms of reduced carbon that can be very reactive. The biological and geological pathways that drive the organic carbon cycle have changed through time; from a synthesis of these changes, it emerges that although a biosphere is required to produce organic carbon, mortality is required to ensure its export to the lithosphere, and graphitization is essential for its long-term stabilization in the solid Earth. Among the by-products of the organic carbon cycle are the accumulation of a massive lithospheric reservoir of organic carbon, the accumulation of dioxygen in the atmosphere and the rise of a terrestrial biosphere. Besides driving surface weathering reactions, free dioxygen has allowed the evolution of new metabolic pathways to produce and respire organic carbon. From the evolution of photosynthesis until the expansion of biomineralization in the Phanerozoic, inorganic controls on the organic carbon cycle have diversified, tightening the connection between the biosphere and geosphere. © 2020, Springer Nature Limited.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169597
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作者单位: Institute of Geochemistry and Petrology, Department of Earth Sciences, Swiss Federal Institute of Technology, Zurich, Switzerland; The Branco Weiss Fellowship – Society in Science, Swiss Federal Institute of Technology, Zurich, Switzerland; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Institute of Geological Science and Oeschger Center for Climate Change Research, University of Bern, Bern, Switzerland; Geological Institute, Department of Earth Sciences, Swiss Federal Institute of Technology, Zurich, Switzerland

Recommended Citation:
Galvez M.E.,Fischer W.W.,Jaccard S.L.,et al. Materials and pathways of the organic carbon cycle through time[J]. Nature Geoscience,2020-01-01,13(8)
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