Articles | Volume 16, issue 3
https://doi.org/10.5194/bg-16-663-2019
https://doi.org/10.5194/bg-16-663-2019
Research article
 | 
04 Feb 2019
Research article |  | 04 Feb 2019

Modeling anaerobic soil organic carbon decomposition in Arctic polygon tundra: insights into soil geochemical influences on carbon mineralization

Jianqiu Zheng, Peter E. Thornton, Scott L. Painter, Baohua Gu, Stan D. Wullschleger, and David E. Graham

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (08 May 2018) by Peter van Bodegom
AR by David Graham on behalf of the Authors (09 Jun 2018)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (16 Jul 2018) by Peter van Bodegom
RR by Ali Ebrahimi (30 Oct 2018)
RR by Katherine Todd-Brown (06 Nov 2018)
ED: Publish subject to minor revisions (review by editor) (18 Dec 2018) by Anja Rammig
AR by David Graham on behalf of the Authors (31 Dec 2018)  Author's response   Manuscript 
ED: Publish subject to minor revisions (review by editor) (06 Jan 2019) by Anja Rammig
AR by David Graham on behalf of the Authors (06 Jan 2019)  Author's response   Manuscript 
ED: Publish as is (09 Jan 2019) by Anja Rammig
AR by David Graham on behalf of the Authors (10 Jan 2019)
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Short summary
Arctic warming exposes soil carbon to increased degradation, increasing CO2 and CH4 emissions. Models underrepresent anaerobic decomposition that predominates wet soils. We simulated microbial growth, pH regulation, and anaerobic carbon decomposition in a new model, parameterized and validated with prior soil incubation data. The model accurately simulated CO2 production and strong influences of water content, pH, methanogen biomass, and competing electron acceptors on CH4 production.
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