Articles | Volume 14, issue 3
Biogeosciences, 14, 711–732, 2017
https://doi.org/10.5194/bg-14-711-2017
Biogeosciences, 14, 711–732, 2017
https://doi.org/10.5194/bg-14-711-2017

Research article 14 Feb 2017

Research article | 14 Feb 2017

Quantifying N2O reduction to N2 based on N2O isotopocules – validation with independent methods (helium incubation and 15N gas flux method)

Dominika Lewicka-Szczebak et al.

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Revised manuscript accepted for BG
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Cited articles

Aulakh, M. S., Doran, J. W., and Mosier, A. R.: Field-Evaluation of 4 Methods for Measuring Denitrification, Soil Sci. Soc. Am. J., 55, 1332–1338, 1991.
Baily, A., Watson, C. J., Laughlin, R., Matthews, D., McGeough, K., and Jordan, P.: Use of the 15N gas flux method to measure the source and level of N2O and N2 emissions from grazed grassland, Nutr. Cycl. Agroecosys., 94, 287–298, 2012.
Bergsma, T. T., Ostrom, N. E., Emmons, M., and Robertson, G. P.: Measuring simultaneous fluxes from soil of N2O and N2 in the field using the 15N-Gas “nonequilihrium” technique, Environ. Sci. Technol., 35, 4307–4312, 2001.
Bollmann, A. and Conrad, R.: Acetylene blockage technique leads to underestimation of denitrification rates in oxic soils due to scavenging of intermediate nitric oxide, Soil Biol. Biochem., 29, 1067–1077, 1997.
Bouwman, A. F., Beusen, A. H. W., Griffioen, J., Van Groenigen, J. W., Hefting, M. M., Oenema, O., Van Puijenbroek, P. J. T. M., Seitzinger, S., Slomp, C. P., and Stehfest, E.: Global trends and uncertainties in terrestrial denitrification and N2O emissions, Philos. T. R. Soc. B, 368, 20130112, https://doi.org/10.1098/rstb.2013.0112, 2013.
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Short summary
The consumption of the greenhouse gas nitrous oxide (N2O) by its reduction to dinitrogen via microbial denitrification in soil is poorly quantified. This precludes improvements in nitrogen (N) efficiency in agricultural ecosystems and mitigation of N losses to the environment including N2O fluxes. We present a laboratory evaluation for the determination of N2O reduction based on stable isotope values of soil-emitted N2O as a new approach to determine N2O reduction in the field studies.
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