Articles | Volume 11, issue 24
Biogeosciences, 11, 7219–7236, 2014

Special issue: Towards a full GHG balance of the biosphere

Biogeosciences, 11, 7219–7236, 2014

Research article 17 Dec 2014

Research article | 17 Dec 2014

Methane and nitrous oxide exchange over a managed hay meadow

L. Hörtnagl and G. Wohlfahrt


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Short summary
The methane (CH4) and nitrous oxide (N2O) exchange of a temperate mountain grassland near Neustift, Austria, was measured during 2010–2012 over a time period of 22 months using the eddy covariance method. The meadow acted as a sink for both compounds during certain time periods, but was a clear source of CH4 and N2O on an annual timescale. Both gases contributed to an increase of the global warming potential (GWP), effectively reducing the sink strength in terms of CO2 equivalents.
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