Analysis of the uncertainty associated with the estimation of nitrogen losses from farming systems |
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| Authors: | Sylvain Payraudeau,Hayo M.G. van der Werf,Franç oise Vertè s |
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| Affiliation: | 1. UMR Centre d’Ecologie Végétale et d’hydrologie, MA 101 ULP/ENGEES, 1 Quai Koch BP 61039, 67070 Strasbourg Cedex, France;2. INRA, UMR Sol, Agronomie et Spatialisation de Rennes-Quimper, Agrocampus, rue de Saint Brieuc CS 84215, 35042 Rennes Cedex, France |
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| Abstract: | This work describes the analysis of the uncertainty linked to the annual direct and indirect losses of different nitrogenous compounds at the scale of a group of farms. The nitrogen (N) forms taken into account are: ammonia (NH3), nitric oxide (NO), nitrous oxide (N2O), dinitrogen (N2) and nitrate (NO3). The gaseous N emissions for the different components of the farms are estimated with a selection of adapted emission factors. The NO3 losses at the farm scale are calculated as the difference between the surplus of the farm-gate N balance and the gaseous N emissions. |
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| Keywords: | Nitrogen Farm-gate balance Farm LCA Uncertainty Monte Carlo |
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