Journal cover Journal topic
SOIL An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  •  value: indexed indexed
  • CiteScore value: 5.79 CiteScore
    5.79
  • SNIP value: 2.052 SNIP 2.052
  • IPP value: 5.30 IPP 5.30
  • SJR value: 1.943 SJR 1.943
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 21 Scimago H
    index 21
  • h5-index value: 22 h5-index 22
Discussion papers
https://doi.org/10.5194/soil-2019-64
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/soil-2019-64
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: short communication 05 Nov 2019

Submitted as: short communication | 05 Nov 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal SOIL (SOIL).

15N gas-flux method to determine N2 emission and N2O pathways: a comparison of different tracer addition approaches

Dominika Lewicka-Szczebak1 and Reinhard Well2 Dominika Lewicka-Szczebak and Reinhard Well
  • 1Centre for Stable Isotope Research and Analysis, University of Göttingen, 37077 Göttingen, Germany
  • 2Thünen-Institut of Climate-Smart Agriculture, Bundesallee 50, 38116 Braunschweig, Germany

Abstract. 15N gas flux method allows for quantification of N2 flux and tracing soil N transformations. An important requirement for this method is a homogeneous distribution of the 15N tracer added to soil. This is usually achieved by soil homogenization and admixture of the 15N tracer solution or multipoint injection of tracer solution to intact soil. Both methods may create artefacts. We aimed at comparing the results of the gas flux method using both tracer distribution approaches.

Intact soil cores with injected 15N tracer solution show wider range of the results obtained. Homogenized soil shows better agreement between repetitions, but significant differences in 15N enrichment measured in soil nitrate and in emitted gases were also observed. For intact soil the wider variability of measured values rather results from natural diversity of non-homogenized soil cores than from inhomogeneous label distribution. Generally, comparison of the results of intact cores and homogenized soil did not reveal statistically significant differences in N2 flux determination. In both cases, pronounced dominance of N2 flux over N2O flux was noted. It can be concluded that both methods showed close agreement and homogenized soil is not necessarily characterized by more homogenous 15N label distribution.

Dominika Lewicka-Szczebak and Reinhard Well
Interactive discussion
Status: open (until 17 Dec 2019)
Status: open (until 17 Dec 2019)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Dominika Lewicka-Szczebak and Reinhard Well
Dominika Lewicka-Szczebak and Reinhard Well
Viewed  
Total article views: 114 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
87 26 1 114 1 1
  • HTML: 87
  • PDF: 26
  • XML: 1
  • Total: 114
  • BibTeX: 1
  • EndNote: 1
Views and downloads (calculated since 05 Nov 2019)
Cumulative views and downloads (calculated since 05 Nov 2019)
Viewed (geographical distribution)  
Total article views: 84 (including HTML, PDF, and XML) Thereof 84 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 17 Nov 2019
Publications Copernicus
Download
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 homogenisation 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.
This study aimed at comparison of various experimental strategies for incubating soil samples to...
Citation