Articles | Volume 6, issue 1
SOIL, 6, 145–152, 2020
SOIL, 6, 145–152, 2020

Short communication 08 Apr 2020

Short communication | 08 Apr 2020

The 15N gas-flux method to determine N2 flux: a comparison of different tracer addition approaches

Dominika Lewicka-Szczebak and Reinhard Well

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Cited articles

Arah, J. R. M.: Apportioning nitrous oxide fluxes between nitrification and denitrification using gas-phase mass spectrometry, Soil Biol. Biochem., 29, 1295–1299, 1997. 
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. 
Buchen, C., Lewicka-Szczebak, D., Fuß, R., Helfrich, M., Flessa, H., and Well, R.: Fluxes of N2 and N2O and contributing processes in summer after grassland renewal and grassland conversion to maize cropping on a Plaggic Anthrosol and a Histic Gleysol, Soil Biol. Biochem., 101, 6–19, 2016. 
Short summary
This study aimed at comparison of various experimental strategies for incubating soil samples to determine the N2 flux. Such experiments require addition of isotope tracer, i.e. nitrogen fertilizer enriched in heavy nitrogen isotopes (15N). Here we compared the impact of soil homogenization and mixing with the tracer and tracer injection to the intact soil cores. The results are well comparable: both techniques would provide similar conclusions on the magnitude of N2 flux.