Citation
Rees, R.M. and Agustín, J. and Alberti, G. and Ball, B.C. and Boeckx, P. and Cantarel, A. and Castaldi, S. and Chirinda, N. and Chojnicki, B. and Giebels, M. and Gordon, H. and Grosz, B. and Horváth, László and Juszczak, R. and Klemedtsson, A. Kasimir and Klemedtsson, L. and Medinets, S. and Machon, A. and Mapanda, F. and Nyamangara, J. and Olesen, J.E. and Reay, D. and Sánchez Martín, Laura and Sanz Cobeña, Alberto and Smith, K.A. and Somerby, A. and Sommer, M. and Soussana, J.F. and Stenberg, M. and Topp, C.F.E. and Van Cleemput, O. and Vallejo Garcia, Antonio and Watson, C.A. and Wuta, M.
(2013).
Nitrous oxide emissions from European agriculture - an analysis of variability and drivers of emissions from field experiments.
"Biogeosciences", v. 10
(n. 4);
pp. 2671-2682.
ISSN 1726-4170.
https://doi.org/10.5194/bg-10-2671-2013.
Abstract
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,
Logarden in Sweden, Maulde in Belgium
CE1, Paulinenaue in Germany, and Tulloch in the UK. Grassland experiments
were conducted at Crichton, Nafferton and Peaknaze in the
UK, Godollo 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−1yr−1, with the largest fluxes and variability associated with the grassland sites. Total nitrogen
addition was found to be the single most important deter-
minant 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 fac-
tors. 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