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| Titel |
Nitrous oxide emissions from European agriculture – an analysis of variability and drivers of emissions from field experiments |
| VerfasserIn |
R. M. Rees, J. Augustin, G. Alberti, B. C. Ball, P. Boeckx, A. Cantarel, S. Castaldi, N. Chirinda, B. Chojnicki, M. Giebels, H. Gordon, B. Grosz, L. Horvath, R. Juszczak, Åsa Kasimir Klemedtsson, L. Klemedtsson, S. Medinets, A. Machon, F. Mapanda, J. Nyamangara, J. E. Olesen, D. S. Reay, L. Sanchez, A. Sanz Cobena, K. A. Smith, A. Sowerby, M. Sommer, J. F. Soussana, M. Stenberg, C. F. E. Topp, O. Cleemput, A. Vallejo, C. A. Watson, M. Wuta |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 10, no. 4 ; Nr. 10, no. 4 (2013-04-22), S.2671-2682 |
| Datensatznummer |
250018212
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| Publikation (Nr.) |
 copernicus.org/bg-10-2671-2013.pdf |
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| Zusammenfassung |
| Nitrous oxide emissions from a network of agricultural experiments in Europe
were used to explore the relative importance of site and management controls
of emissions. At each site, a selection of management interventions were
compared within replicated experimental designs in plot-based experiments.
Arable experiments were conducted at Beano in Italy, El Encin in Spain,
Foulum in Denmark, Logården in Sweden, Maulde in Belgium, Paulinenaue in
Germany, and Tulloch in the UK. Grassland experiments were conducted at
Crichton, Nafferton and Peaknaze in the UK, Gödöllö in Hungary,
Rzecin in Poland, Zarnekow in Germany and Theix in France. Nitrous oxide
emissions were measured at each site over a period of at least two years
using static chambers. Emissions varied widely between sites and as a result
of manipulation treatments. Average site emissions (throughout the study
period) varied between 0.04 and 21.21 kg N2O-N ha−1 yr−1, with
the largest fluxes and variability associated with the grassland sites.
Total nitrogen addition was found to be the single most important
determinant of emissions, accounting for 15% of the variance (using
linear regression) in the data from the arable sites (p < 0.0001),
and 77% in the grassland sites. The annual emissions from arable sites
were significantly greater than those that would be predicted by IPCC
default emission factors. Variability of N2O emissions within sites
that occurred as a result of manipulation treatments was greater than that
resulting from site-to-site and year-to-year variation, highlighting the
importance of management interventions in contributing to greenhouse gas
mitigation. |
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