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Evaluation of an operational method for the estimation of emissions of nitrogen compounds for a group of farms

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  • Sylvain Payraudeau
  • Hayo M.G. Van Der Werf
  • Francoise Vertes
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    Abstract

    The aim of this article is to evaluate a practical method for estimating nitrogen emissions on the scale of a group of farms, to be used in Life Cycle Assessment (LCA). The method rests on the estimation of nitrogen inputs and outputs to calculate the surplus of the annual nitrogen balance on the scale of a farm. The different gaseous nitrogen losses (NH>SUB align=right>>SMALL>3>/SMALL>>/SUB>, NO, N>SUB align=right>>SMALL>2>/SMALL>>/SUB>O, N>SUB align=right>>SMALL>3>/SMALL>>/SUB>) are then estimated for each livestock or cropping system. The leaching losses in the form of NO>SUB align=right>>SMALL>3>/SMALL>>/SUB> are assumed to correspond to the surplus of the apparent nitrogen balance to which are added the atmospheric depositions, minus the gaseous losses. The feasibility of this method was studied on 24 farms in the Naizin catchment area (Brittany, France). An analysis of the sensitivity of NO>SUB align=right>>SMALL>3>/SMALL>>/SUB> estimates to different parameters used to calculate gaseous losses was carried out. Lastly the robustness of the NO>SUB align=right>>SMALL>3>/SMALL>>/SUB> estimates was examined by comparing them with measurements of NO>SUB align=right>>SMALL>3>/SMALL>>/SUB> collected within this catchment area.

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    File URL: http://inderscience.metapress.com/link.asp?target=contribution&id=2WW8NUWMTMQ4A01H
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    Bibliographic Info

    Article provided by Inderscience Enterprises Ltd in its journal International Journal of Agricultural Resources, Governance and Ecology.

    Volume (Year): 5 (2006)
    Issue (Month): 2 (January)
    Pages: 224-246

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    Handle: RePEc:ids:ijarge:v:5:y:2006:i:2:p:224-246

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    Web page: http://inderscience.metapress.com/link.asp?target=journal&id=110835

    Related research

    Keywords: apparent nitrogen balance; life cycle assessment; LCA; nitrogen budget; nitrogen emissions; farm scale; emission estimation; France; environmental evaluation; environmental pollution; farming; agriculture; environmental sustainability;

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    Cited by:
    1. Payraudeau, Sylvain & van der Werf, Hayo M.G. & Vertes, Francoise, 2007. "Analysis of the uncertainty associated with the estimation of nitrogen losses from farming systems," Agricultural Systems, Elsevier, vol. 94(2), pages 416-430, May.
    2. Sorel, Luc & Viaud, Valérie & Durand, Patrick & Walter, Christian, 2010. "Modeling spatio-temporal crop allocation patterns by a stochastic decision tree method, considering agronomic driving factors," Agricultural Systems, Elsevier, vol. 103(9), pages 647-655, November.

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