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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Latest update: 13 Oct 2025
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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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