Articles | Volume 16, issue 2
https://doi.org/10.5194/bg-16-383-2019
https://doi.org/10.5194/bg-16-383-2019
Research article
 | 
24 Jan 2019
Research article |  | 24 Jan 2019

Early season N2O emissions under variable water management in rice systems: source-partitioning emissions using isotope ratios along a depth profile

Elizabeth Verhoeven, Matti Barthel, Longfei Yu, Luisella Celi, Daniel Said-Pullicino, Steven Sleutel, Dominika Lewicka-Szczebak, Johan Six, and Charlotte Decock

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (13 Nov 2018) by Andreas Richter
AR by Anna Wenzel on behalf of the Authors (15 Nov 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (17 Nov 2018) by Andreas Richter
RR by Nathaniel Ostrom (11 Dec 2018)
RR by Anonymous Referee #1 (17 Dec 2018)
ED: Publish subject to technical corrections (27 Dec 2018) by Andreas Richter
AR by Elizabeth Verhoeven on behalf of the Authors (28 Dec 2018)  Author's response    Manuscript
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Short summary
This study utilized state-of-the-art measurements of nitrogen isotopes to evaluate nitrogen cycling and to assess the biological sources of the potent greenhouse gas, N2O, in response to water-saving practices in rice systems. Water-saving practices did emit more N2O, and high N2O production had a lower 15N isotope signature. Modeling and visual interpretation indicate that these emissions mostly came from denitrification or nitrifier denitrification, controlled upstream by nitrification rates.
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