气候变化领域集成服务门户(CCPortal): Microbial oxidation of lithospheric organic carbon in rapidly eroding tropical mountain soils

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DOI	10.1126/science.aao6463
	Microbial oxidation of lithospheric organic carbon in rapidly eroding tropical mountain soils
	Hemingway J.D.; Hilton R.G.; Hovius N.; Eglinton T.I.; Haghipour N.; Wacker L.; Chen M.-C.; Galy V.V.
发表日期	2018
ISSN	0036-8075
起始页码	209
结束页码	212
卷号	360 期号:6385
英文摘要	Lithospheric organic carbon (“petrogenic”; OCpetro) is oxidized during exhumation and subsequent erosion of mountain ranges. This process is a considerable source of carbon dioxide (CO2) to the atmosphere over geologic time scales, but the mechanisms that govern oxidation rates in mountain landscapes are poorly constrained. We demonstrate that, on average, 67 ± 11% of the OCpetro initially present in bedrock exhumed from the tropical, rapidly eroding Central Range of Taiwan is oxidized in soils, leading to CO2 emissions of 6.1 to 18.6 metric tons of carbon per square kilometer per year. The molecular and isotopic evolution of bulk OC and lipid biomarkers during soil formation reveals that OCpetro remineralization is microbially mediated. Rapid oxidation in mountain soils drives CO2 emission fluxes that increase with erosion rate, thereby counteracting CO2 drawdown by silicate weathering and biospheric OC burial. 2017 © The Authors
英文关键词	carbon dioxide; organic carbon; silicate; carbon; organic compound; bedrock; biomarker; carbon dioxide; drawdown; erosion rate; exhumation; isotopic analysis; molecular analysis; organic carbon; oxidation; remineralization; silicate; timescale; Article; atmospheric deposition; bedrock; carbon cycle; carbon dioxide evolution; carbon footprint; exhumation; geological time; landscape; lithosphere; microbial biomass; microbial corrosion; oxidation; priority journal; rock; soil chemistry; soil degradation; soil erosion; soil property; Taiwan; tropics; weathering; chemistry; metabolism; microbiology; oxidation reduction reaction; soil; Taiwan; Carbon; Carbon Dioxide; Organic Chemicals; Oxidation-Reduction; Soil; Soil Microbiology; Taiwan
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243995
作者单位	Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution (WHOI), 266 Woods Hole Road, Woods Hole, MA 02543, United States; Massachusetts Institute of Technology (MIT)–WHOI Joint Program in Oceanography and Applied Ocean Science and Engineering, 77 Massachusetts Avenue, Cambridge, MA 02139, United States; Department of Geography, Durham University, South Road, Durham, DH1 3LE, United Kingdom; GFZ German Research Center for Geoscience, Telegrafenberg, Potsdam, 14473, Germany; Department of Earth and Environmental Sciences, University of Potsdam, Karl-Liebknechtstraße 24, Golm, 14476, Germany; Geological Institute, Department of Earth Sciences, ETH Zürich, Sonneggstraße 5, Zürich, 8092, Switzerland; Laboratory of Ion Beam Physics, Department of Physics, ETH Zürich, Otto-Stern-Weg 5, Zürich, 8092, Switzerland; Taroko National Park Headquarters, Fu-Su Village, Hualien, 972, Taiwan; Department of Earth and Planetary Sciences, Harvard University, 20 Oxford Street, Cambridge, MA 02...
推荐引用方式 GB/T 7714	Hemingway J.D.,Hilton R.G.,Hovius N.,et al. Microbial oxidation of lithospheric organic carbon in rapidly eroding tropical mountain soils[J],2018,360(6385).
APA	Hemingway J.D..,Hilton R.G..,Hovius N..,Eglinton T.I..,Haghipour N..,...&Galy V.V..(2018).Microbial oxidation of lithospheric organic carbon in rapidly eroding tropical mountain soils.Science,360(6385).
MLA	Hemingway J.D.,et al."Microbial oxidation of lithospheric organic carbon in rapidly eroding tropical mountain soils".Science 360.6385(2018).