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Nitrous oxide emissions from European agriculture; an analysis of variability and drivers of emissions from field experiments

Paper i proceeding
Författare Åsa Kasimir Klemedtsson
Leif Klemedtsson
Publicerad i Nitrogen & Global Change 2011, Key Findings - Future Challenges
Publiceringsår 2011
Publicerad vid Institutionen för geovetenskaper
Institutionen för växt- och miljövetenskaper
Språk en
Länkar nitrogen.ceh.ac.uk/nitrogen2011/
Ämneskategorier Naturvetenskap, Växtproduktion, Markvetenskap

Sammanfattning

Agricultural soils are a major source of nitrous oxide in Europe, and strategies to reduce greenhouse gas emissions from the agricultural sector frequently highlight the importance of management interventions. However, the importance of such management can be difficult to assess against a background of fluxes that are highly variable in time and space. A network of 13 experimental sites (seven arable and six grassland) was established as a part of the NitroEurope project, in which common protocols were developed for the measurement and reporting of nitrous oxide emissions and related environmental drivers. At each site a range of management interventions were compared. Annual total emissions of nitrous oxide from different treatment sites and years showed wide variability. Single variables were often poor predictors of emissions, and so a range of multivariate statistical techniques were used to explore the relationships between annual emissions and underlying driving variables. The implications for developing European strategies for the mitigation of nitrous oxide emissions from the agricultural sector are discussed.

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