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Global Pyrogenic Carbon Production During Recent Decades Has Created the Potential for a Large, Long-Term Sink of Atmospheric CO2


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dc.contributorGuangsheng Chenen_US
dc.creatorWei, Xinyuan
dc.creatorHayes, Daniel J.
dc.creatorFraver, Shawn
dc.creatorChen, Guangsheng
dc.date.accessioned2020-05-26T01:06:42Z
dc.date.available2020-05-26T01:06:42Z
dc.date.created2018-12
dc.identifier10.1029/2018JG004490en_US
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018JG004490en_US
dc.identifier.urihttp://hdl.handle.net/11200/49816
dc.description.abstractFires play an important role in the terrestrial biosphere carbon cycle, not only through direct carbon release but also contributing to a potential long-term storage as pyrogenic carbon (PyC). PyC is formed through fires, and, because it may resist further biological and chemical degradation, is more stable in soil and sediment than original biomass. At the global scale, contributions of fires to both atmospheric CO2 emissions and PyC accumulation are potentially large but difficult to estimate. Our analysis was based on existing simulation results from two different modeling approaches (Global Fire Emissions Database version 4 [GFED4s] and Terrestrial Ecosystem Model version 6 [TEM6]) that used global area burned data to provide recent, retrospective estimates of CO2 emissions from vegetation combustion, together with published, biome- and continental-scale conversion ratios that relate CO2 emissions to PyC production (PyC/CO2) during combustion. The estimates of global CO2 emissions from fires differed substantially between the two models' results. GFED4s estimated 2,041TgC/year during the 2000-2016 time period, whereas the TEM6 estimate was considerably lower at 643TgC/year from 2000 to 2010. Global PyC production estimates from fires were 153.418.7 and 49.54.9TgC/year based on the emission estimates from GFED4s and TEM6, respectively. Our results suggest that African tropical savanna fires produced the largest amount of CO2 emissions and PyC among global biomes, the most significant interannual variations in CO2 emissions and PyC production were found in tropical forests, and the magnitude of PyC produced by fires each year represented a potentially significant long-term sink of atmospheric CO2.en_US
dc.formatPDFen_US
dc.publisherAMER GEOPHYSICAL UNIONen_US
dc.relation.ispartofJOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCESen_US
dc.relation.ispartofseries2169-8953en_US
dc.rights©The Authors 2018. ©American Geophysical Union 2018. This is this the version of record co-published by the American Geophysical Union and John Wiley & Sons, Inc. It is made available under the CC-BY-NC-ND 4.0 license. Item should be cited as: Wei, X., Hayes, D. J., Fraver, S., & Chen, G. (2018). Global Pyrogenic Carbon Production During Recent Decades Has Created the Potential for a Large, Long‐Term Sink of Atmospheric CO2. Journal of Geophysical Research: Biogeosciences, 123(12), 3682-3696.en_US
dc.subjectcarbon cycle; carbon dioxide; carbon sinks; fires; pyrogenic carbonen_US
dc.subjectMODEL INTERCOMPARISON PROJECT; PROGRAM MULTISCALE SYNTHESIS; SOIL ORGANIC-CARBON; COARSE WOODY DEBRIS; BLACK CARBON; CHARCOAL FORMATION; BURNING EFFICIENCY; FIRE EMISSIONS; BIOMASS; FORESTen_US
dc.titleGlobal Pyrogenic Carbon Production During Recent Decades Has Created the Potential for a Large, Long-Term Sink of Atmospheric CO2en_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume123en_US
dc.citation.issue12en_US
dc.citation.spage3682en_US
dc.citation.epage3696en_US
dc.description.statusPublisheden_US
dc.creator.orcid0000-0001-6544-5287en_US

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