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Titre : 
Cultiver Miscanthus x giganteus en parcelles agricoles : du diagnostic agro-environnemental à la conception-évaluation ex ante de systèmes de culture à vocation énergétique / Claire Lesur ; sous la direction de Marie-Hélène Jeuffroy
Mémoire ou thèse (version d'origine)
Alphabet du titre : 
latin
Auteur(s) : 
Jeuffroy, Marie-Hélène. Directeur de thèse
Doré, Thierry (1962-....). Président du jury de soutenance
Justes, Éric. Rapporteur de la thèse
Wery, Jacques (19..-....). Rapporteur de la thèse
Boizard, Hubert. Membre du jury
Lejars, Laurent. Membre du jury
Richter, Goetz. Membre du jury
Loyce, Chantal. Membre du jury
AgroParisTech (France). Organisme de soutenance
Agronomie (Thiverval-Grignon, Yvelines ; 1964-....). Laboratoire associé à la thèse
Date(s) : 
2012
Langue(s) : 
anglais, français
Pays : 
France
Production :
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Données textuelles
Num. national de thèse : 
2012AGPT0084
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Thèse : 
Notes :
Titre provenant de l'écran-titre. - Thèse soutenue sur un ensemble de travaux. - Ecole(s) Doctorale(s) : Ecole Doctorale Agriculture, Alimentation, Biologie, Environnement, Santé (2000-2015 ; Paris). - Partenaire(s) de recherche : Agronomie (Thiverval-Grignon, Yvelines ; 1964-....) (Laboratoire). - Autre(s) contribution(s) : Thierry Doré (Président du jury) ; Hubert Boizard, Laurent Lejars, Goetz Richter, Chantal Loyce (Membre(s) du jury) ; Éric Justes, Jacques Wery (Rapporteur(s))
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Résumé(s) : 
Second-generation biofuels could provide renewable energy while reducing the globaleconomy dependence on oil and mitigating climate change. However, their greenhouse gasemission balances, as well as their energy and environmental balances, are discussed,especially when they are produced from agricultural feedstock. The use of agriculturalfeedstock for energy purposes also raises the issue of competition with food production. Inthis context, this work contributes to the assessment of the sustainability of Miscanthus xgiganteus, a perennial C4 crop candidate to the production of second-generation ethanol. Theobjectives of this work are (i) to achieve a multicriteria evaluation of cropping systems basedon M. Giganteus using data collected in farmers’ fields and (ii) to compare these croppingsystems with cropping systems including other resources Agricultural candidates for biofuelproduction. The main contributions of this work are (i) the study of the variability of yieldsand winter nitrate losses in a network of commercial fields located in Burgundy (France), (ii)the characterization by modeling of M. giganteus long-term yield evolution and (iii) theintegration of these findings in a process of cropping systems design and assessment aimingat comparing M. giganteus with other feedstock candidate to the production of bioethanol.The study of M. giganteus in farmers’ fields shows that the high variability of yields andnitrate losses is linked to (i) crop age, (ii) soil type and (iii) the type of field (i.e. culturalhistory, size, shape, and environment). Contrasting yield scenarios, built by combining datacollected in commercial fields with a long-term yield evolution model, show that thesensitivity of assessment results regarding yields depends on the assessment field. Theinsertion of M. giganteus in a cropping system can significantly improve the greenhouse gasemission balance as well as the environmental balance, compared with a cropping systembased on a short cropping sequence. Economic results depend strongly on M. giganteus yield.Other agricultural feedstocks are also interesting, especially on soils where the yield potentialof M. giganteus is low: this is particularly the case of alfalfa stems, which can be used forsecond-generation ethanol production.
 
Second-generation biofuels could provide renewable energy while reducing the globaleconomy dependence on oil and mitigating climate change. However, their greenhouse gasemission balances, as well as their energy and environmental balances, are discussed,especially when they are produced from agricultural feedstock. The use of agriculturalfeedstock for energy purposes also raises the issue of competition with food production. Inthis context, this work contributes to the assessment of the sustainability of Miscanthus xgiganteus, a perennial C4 crop candidate to the production of second-generation ethanol. Theobjectives of this work are (i) to achieve a multicriteria evaluation of cropping systems basedon M. Giganteus using data collected in farmers’ fields and (ii) to compare these croppingsystems with cropping systems including other resources Agricultural candidates for biofuelproduction. The main contributions of this work are (i) the study of the variability of yieldsand winter nitrate losses in a network of commercial fields located in Burgundy (France), (ii)the characterization by modeling of M. giganteus long-term yield evolution and (iii) theintegration of these findings in a process of cropping systems design and assessment aimingat comparing M. giganteus with other feedstock candidate to the production of bioethanol.The study of M. giganteus in farmers’ fields shows that the high variability of yields andnitrate losses is linked to (i) crop age, (ii) soil type and (iii) the type of field (i.e. culturalhistory, size, shape, and environment). Contrasting yield scenarios, built by combining datacollected in commercial fields with a long-term yield evolution model, show that thesensitivity of assessment results regarding yields depends on the assessment field. Theinsertion of M. giganteus in a cropping system can significantly improve the greenhouse gasemission balance as well as the environmental balance, compared with a cropping systembased on a short cropping sequence. Economic results depend strongly on M. giganteus yield.Other agricultural feedstocks are also interesting, especially on soils where the yield potentialof M. giganteus is low: this is particularly the case of alfalfa stems, which can be used forsecond-generation ethanol production.
 
 
 
Autres oeuvres en liaison : 
Assessing nitrate leaching during the three-first years of Miscanthus × giganteus from on-farm measurements and modeling / Claire Lesur, Mathieu Bazot, Fadel Bio-Beri. - GCB Bioenergy, 2014
Modeling long-term yield trends of Miscanthus x giganteus using experimental data from across Europe / Claire Lesur, M.H. Jeuffroy, D. Makowski. - Field Crops Research, 2013
 
Titre(s) traduit(s) ajouté(s) par le catalogueur : 
Cropping Miscanthus x giganteus in commercial fields : from agro-environmental diagnostic to ex ante design and assessment of energy oriented cropping systems (anglais)
 
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