气候变化领域集成服务门户(CCPortal): Global fire emissions buffered by the production of pyrogenic carbon

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DOI	10.1038/s41561-019-0403-x
	Global fire emissions buffered by the production of pyrogenic carbon
	Jones M.W.; Santín C.; van der Werf G.R.; Doerr S.H.
发表日期	2019
ISSN	17520894
卷号	12 期号:9
英文摘要	Landscape fires burn 3–5 million km2 of the Earth’s surface annually. They emit 2.2 Pg of carbon per year to the atmosphere, but also convert a significant fraction of the burned vegetation biomass into pyrogenic carbon. Pyrogenic carbon can be stored in terrestrial and marine pools for centuries to millennia and therefore its production can be considered a mechanism for long-term carbon sequestration. Pyrogenic carbon stocks and dynamics are not considered in global carbon cycle models, which leads to systematic errors in carbon accounting. Here we present a comprehensive dataset of pyrogenic carbon production factors from field and experimental fires and merge this with the Global Fire Emissions Database to quantify the global pyrogenic carbon production flux. We found that 256 (uncertainty range: 196–340) Tg of biomass carbon was converted annually into pyrogenic carbon between 1997 and 2016. Our central estimate equates to 12% of the annual carbon emitted globally by landscape fires, which indicates that their emissions are buffered by pyrogenic carbon production. We further estimate that cumulative pyrogenic carbon production is 60 Pg since 1750, or 33–40% of the global biomass carbon lost through land use change in this period. Our results demonstrate that pyrogenic carbon production by landscape fires could be a significant, but overlooked, sink for atmospheric CO2. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	biomass; buffering; carbon cycle; carbon dioxide; carbon emission; carbon sequestration; error analysis; fire; land use change; vegetation dynamics
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/124617
作者单位	Geography Department, College of Science, Swansea University, Swansea, United Kingdom; Biosciences Department, College of Science, Swansea University, Swansea, United Kingdom; Faculty of Science, Vrije Universiteit, Amsterdam, Netherlands; Tyndall Centre for Climate Change Research, University of East Anglia, Norwich, United Kingdom
推荐引用方式 GB/T 7714	Jones M.W.,Santín C.,van der Werf G.R.,et al. Global fire emissions buffered by the production of pyrogenic carbon[J],2019,12(9).
APA	Jones M.W.,Santín C.,van der Werf G.R.,&Doerr S.H..(2019).Global fire emissions buffered by the production of pyrogenic carbon.Nature Geoscience,12(9).
MLA	Jones M.W.,et al."Global fire emissions buffered by the production of pyrogenic carbon".Nature Geoscience 12.9(2019).