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

Journal metrics

IF value: 3.480
IF3.480
IF 5-year value: 4.194
IF 5-year
4.194
CiteScore value: 6.7
CiteScore
6.7
SNIP value: 1.143
SNIP1.143
IPP value: 3.65
IPP3.65
SJR value: 1.761
SJR1.761
Scimago H <br class='widget-line-break'>index value: 118
Scimago H
index
118
h5-index value: 60
h5-index60
Volume 2, issue 4
Biogeosciences, 2, 377–387, 2005
https://doi.org/10.5194/bg-2-377-2005
© Author(s) 2005. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Nitrogen oxides (NO, NO2, N2O) emissions...

Biogeosciences, 2, 377–387, 2005
https://doi.org/10.5194/bg-2-377-2005
© Author(s) 2005. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  08 Dec 2005

08 Dec 2005

Nitrous oxide emissions from a beech forest floor measured by eddy covariance and soil enclosure techniques

M. Pihlatie1, J. Rinne1, P. Ambus2, K. Pilegaard2, J. R. Dorsey3,*, Ü. Rannik1, T. Markkanen4, S. Launiainen1, and T. Vesala1 M. Pihlatie et al.
  • 1Department of Physical Sciences, University of Helsinki, Finland
  • 2Biosystems Department, Risø National Laboratory, Roskilde, Denmark
  • 3Department of Earth Sciences, University of Manchester, UK
  • 4Department of Micrometeorology, University of Bayreuth, Germany
  • *now at: CNR – ESPM – Ecosystem science, University of California, Berkeley, USA

Abstract. Spring time nitrous oxide (N2O) emissions from an old beech (Fagus sylvatica L.) forest were measured with eddy covariance (EC) and chamber techniques. The aim was to obtain information on the spatial and temporal variability in N2O emissions and link the emissions to soil environmental parameters. Mean N2O fluxes over the five week measurement period were 5.6±1.1, 10±1 and 16±11 μg N m−2 h−1 from EC, automatic chamber and manual chambers, respectively. High temporal variability characterized the EC fluxes in the trunk-space. To reduce this variability, resulting mostly from random uncertainty due to measuring fluxes close to the detection limit, we averaged the fluxes over one day periods. The variability in the chamber measurements was much smaller and dominated by high small scale spatial variability. The highest emissions measured by the EC method occurred during the first week of May when the trees were leafing and the soil moisture content was at its highest. If chamber techniques are used to estimate ecosystem level N2O emissions from forest soils, placement of the chambers should be considered carefully to cover the spatial variability in the soil N2O emissions. The EC technique, applied in this study, is a promising alternative tool to measure ecosystem level N2O fluxes in forest ecosystems. To our knowledge, this is the first study to demonstrate that the EC technique can be used to measure N2O fluxes in the trunk-space of a forest.

Publications Copernicus
Download
Citation
Altmetrics
Final-revised paper
Preprint