Analyse environnementale multicritères des systèmes d'élevage d'herbivores et proposition de leviers d'action

Abstract : Climate change and environment preservation have become worldwide political issues. This study aims at achieve an environmental multi-criteria analysis, based on a life cycle assessment, of beef production systems. The results show that a beef production system produces 1085 (+/- 385) kg eq CO2 net of greenhouse gas, 9.7 (+/- 2.8) kg eq SO2 of acidifying gas, 3.5 (+/-2) kg eq PO4 potentially washable, 2172 (+/- 763) MJ of non-renewable energy, uses 473 (+/- 209) m2 and maintains 41 (+/- 29) ares of biodiversity to produce 100 kg of live meat. Nevertheless, every livestock system has its own characteristics which will strongly influence its emissions and its environmental impacts. Thus, reducing environmental impacts to a non-fluctuating functional unit is better to identify the environmental profile of each system. Enhancing natural resources of grass, increase the systems? autonomy (between -1,9% and -9% on environmental impacts) and having a slurry effluent system (-8,1% on GHGs) are the main levers to reduce negative impacts and to maintain positive impacts of beef production systems on environment. These levers will contribute to develop more consistent, more efficient, more autonomous, more environmentally friendly, and so more sustainable.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/SCDSCI_M_2011_MOREAU_SINDY.pdf
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https://hal.univ-lorraine.fr/hal-01787658
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Submitted on : Monday, May 7, 2018 - 4:54:03 PM
Last modification on : Friday, September 14, 2018 - 1:01:45 AM

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Sindy Moreau. Analyse environnementale multicritères des systèmes d'élevage d'herbivores et proposition de leviers d'action. Sciences de l'environnement. 2011. ⟨hal-01787658⟩

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