Articles | Volume 16, issue 10
https://doi.org/10.5194/bg-16-2233-2019
https://doi.org/10.5194/bg-16-2233-2019
Research article
 | 
29 May 2019
Research article |  | 29 May 2019

Underestimation of denitrification rates from field application of the 15N gas flux method and its correction by gas diffusion modelling

Reinhard Well, Martin Maier, Dominika Lewicka-Szczebak, Jan-Reent Köster, and Nicolas Ruoss

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (04 Mar 2019) by Ivonne Trebs
AR by Reinhard Well on behalf of the Authors (20 Apr 2019)  Manuscript 
ED: Referee Nomination & Report Request started (24 Apr 2019) by Ivonne Trebs
RR by Anonymous Referee #1 (15 May 2019)
ED: Publish as is (16 May 2019) by Ivonne Trebs
AR by Reinhard Well on behalf of the Authors (20 May 2019)  Author's response   Manuscript 
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Short summary
Denitrification is a key process in the soil nitrogen cycle but poorly investigated due to methodical limitations. The 15N gas flux method is currently the only approach allowing field measurement of denitrification but was subject to bias due to unaccounted fluxes of 15N-labelled gaseous denitrification products to the subsoil. We used field flux experiments and diffusion–reaction modelling to estimate this source of error and developed an approach to correct denitrification rates.
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