Évaluation des impacts environnementaux des productions agricoles de la Biovallée (Drôme, 26) par Analyse de Cycle de Vie (ACV)

Abstract : Agriculture is responsible for numerous global and local environmental impacts. Life cycle assessment (LCA) is a standardized method for assessing the environmental impacts of agricultural production in order to reduce damages. Within the framework of the BOAT project, commissioned by ADEME, on the valorisation and management of agricultural biomass, we are interested in the environmental impacts of the six main agricultural sectors on the Biovallée territory (Drôme, 26), representing 85% of the territory's UAA. The overall impacts of the territory's agricultural activity are presented as well as the impacts by sector and by mode of production according to two current functional units (hectare and kilogram). The sectors with the strongest impacts are field crops, poultry farming and meat sheep production. The organic production method, widespread in this territory, generally has a more favourable environmental profile than conventional agriculture per hectare used, but the situation is reversed for most productions when the impacts are expressed per kg of product. The detailed study of the results makes it possible to identify the main processes responsible for the impacts of each product for each impact category, which is of interest for changing production methods towards more sustainable agriculture. However, these results should be considered with great caution due to their important uncertainty. The study made it possible to implement an LCA methodology for the evaluation of productions at the territory scale. The discussion of the method highlighted its main limits and needs for improving, among other things, the choice of functional units, impact categories, the reliability of survey data and the aggregation of production on the territory.
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Master Thesis
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Victoire Barillet. Évaluation des impacts environnementaux des productions agricoles de la Biovallée (Drôme, 26) par Analyse de Cycle de Vie (ACV). Sciences du Vivant [q-bio]. 2018. ⟨dumas-01952318⟩

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