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[hal-05318202] Critical material and regional inequality: Material demand under diverging decarbonization pathways in China’s power sector
China's power sector decarbonization is crucial for global climate goals. However, regional disparities in decarbonization pathways and material demands arise due to differences in resource endowment, economic development, and policy support. This study develops an integrated assessment model to evaluate critical material demand for decarbonizing China's power sector under four scenarios: Business-as-Usual (BAU), Renewable Energy (RE), Carbon Capture and Storage (CCS), and Advanced Nuclear (AN). The results show significant provincial variations, with eastern provinces favoring wind and solar, while western and coal-dependent regions rely on hydropower or CCS. Nationally, material demand peaks in the CCS scenario by 2060, especially for structural materials like copper (2250 Mt) and nickel (445 Mt). Functional materials such as silicon and indium see significant demand increases under PV-driven transitions, with silicon reaching 9300 kt and indium 14.2 Mt by 2060 in the RE scenario. These findings highlight the need for region-specific policies, long-term material supply planning, and addressing material demand imbalances for a sustainable energy transition.
ano.nymous@ccsd.cnrs.fr.invalid (Haotian Zhang) 16 Oct 2025
https://institut-agro-dijon.hal.science/hal-05318202v1
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[hal-05315123] PARIS2019: The impact of rent control on the Parisian rental market
We evaluate the impact of the rent control regulation implemented by the city of Paris in July 2019 on the Parisian rental market. We take advantage of the large amount of real-time data available on the SeLoger platform containing the ads published by professional realtors. Using a database of 559,300 observations from January 2018 to June 2023, we apply a difference-in-differences model, where control units are located in eight major French cities in which the rental market is particularly tense but not regulated during the analysis period. We show that the rent control policy decreased rents by 3.7% to 4.2% in Paris on average. Yet, the effect of the policy is heterogeneous depending on dwelling characteristics, with a stronger effect on small apartments. We also estimate the upper bound of the effectiveness of the policy and show that if every dwelling respected the rent control, rents would have decreased by 8.2% to 8.7%. We confirm the effectiveness of the rent control policy by extending the analysis to five additional regulated cities using a staggered difference-in-differences strategy, which reinforces the external validity of our findings. Finally, we examine whether the policy affected the supply of rental housing, proxied by the number of new listings published by agencies. We find no evidence of a decline in supply attributable to the rent control
ano.nymous@ccsd.cnrs.fr.invalid (Yoann Morin) 15 Oct 2025
https://hal.inrae.fr/hal-05315123v1
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[hal-05369524] L’épouse, la mère et l’éleveuse.
[...]
ano.nymous@ccsd.cnrs.fr.invalid (Florence Hellec) 17 Nov 2025
https://hal.inrae.fr/hal-05369524v1
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[hal-05362187] Setting reference GHG emissions for research activities
The carbon footprint of academic research has attracted growing attention in recent years, with numerous assessments conducted at the level of universities or research departments. Yet, methodological inconsistencies and small sample sizes limit comparability and hinder generalization, while concrete mitigation targets remain underdeveloped. This study draws on a national database covering about 157,000 research staff in 700 units-roughly one-third of French public research-between 2019 and 2023. Emissions are assessed across five major sources: purchases, professional travel, commuting, electricity, and heating. The dataset is used to (i) model structural determinants of research-related GHG emissions and (ii) establish reference values to guide mitigation strategies. We develop a framework to identify robust statistical models to predict average emissions levels per source. Based on staff composition, supervisory body, research domain, and geographical location, these models explain up to one-third of inter-unit variance and improve predictive accuracy by 8%–23% over baseline averages. Embedded in an online tool, these models help support the design of efficient, equitable, and realistic mitigation targets.
ano.nymous@ccsd.cnrs.fr.invalid (Léa Marquet) 19 Nov 2025
https://hal.inrae.fr/hal-05362187v1
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[hal-04271386] Discrimination against people with mental, physical or visual disabilities in the French rental housing market: field experiment
We implement correspondence testing to detect and assess the extent of discrimination against people with disabilities in the French rental housing market. By sending 1,750 emails in a matched-pair procedure, we provide evidence of significant and extensive discrimination against blind people with a guide dog, individuals with mental disabilities, and individuals with motor impairments in the process of rented housing allocation. However, the primary cause of discrimination against blind individuals appears to stem from the presence of the guide dog, rather than the disability itself. Our results are also consistent with the presence of statistical discrimination (particularly based on financial means). We find that absolute discrimination against disabled applicants increases in accordance with the level of rent, while real estate agents discriminate significantly less against disabled applicants than private landlords.
ano.nymous@ccsd.cnrs.fr.invalid (Alexandre Flage) 06 Nov 2023
https://institut-agro-dijon.hal.science/hal-04271386v1
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[hal-05307641] Is there an additional price premium for single-family houses exposed to urban parks? Insights from causal spatio-temporal matching in Québec city
Urban parks and green spaces are known for providing positive social and environmental services, which is usually capitalized into real estate prices. While positive externalities extend at the neighbourhood level, negative externalities can be detected close to the infrastructures, making the price premium varying locally for houses exposed. The paper investigates if local price premium for exposition to different types of parks differ between houses connected or adjacent to parks compared to other houses located nearby but not directly exposed. For that purpose, a spatio-temporal propensity score matching identification strategy is proposed and applied on single-family house transactions in Québec City between 2004 and 2020. The estimation results show that, except for two specific situations, direct exposition does not necessarily translate in significant additional house price premiums. However, a complementary quantile analysis suggests that the non-significant mean differential price premium hides an important spatial dimension, pointing to the presence of environmental inequities.
ano.nymous@ccsd.cnrs.fr.invalid (Jean Dubé) 10 Oct 2025
https://institut-agro-dijon.hal.science/hal-05307641v1
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[hal-05371444] Les maquignons #2 – Premiers pas sur le terrain
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ano.nymous@ccsd.cnrs.fr.invalid (Florence Hellec) 18 Nov 2025
https://hal.inrae.fr/hal-05371444v1
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[hal-05335373] Les vignobles en construction : une analyse des ressources et de la structuration d’une action collective innovante et territorialisée
Face à la baisse de la consommation de vin et, plus largement, à une conjoncture économique défavorable, le vignoble français doit s’adapter à une double concurrence : celle des vins du Nouveau Monde (vins de cépages) et celle des « vins d’artistes », plus respectueux de l’environnement et portés par des stratégies de marques individuelles. Parallèlement, le changement climatique modifie les conditions de production, favorisant l’émergence de nouveaux vignobles dans des régions auparavant inadaptées, comme la Bretagne. Cette étude analyse la création d’un vignoble breton à travers le prisme de l’action collective territorialisée, en s’intéressant aux dynamiques d’innovations techniques, commerciales et organisationnelles. La méthodologie repose sur des entretiens semi-directifs et des observations participantes, l’objectif étant d’identifier les acteurs de l’émergence de la filière, leurs stratégies et les ressources mobilisées. Les résultats attendus incluent une typologie des acteurs, une frise chrono-systémique retraçant la trajectoire du vignoble, et une meilleure compréhension des modèles d’innovation et de gouvernance territoriale en construction.
ano.nymous@ccsd.cnrs.fr.invalid (Jean Werling) 28 Oct 2025
https://institut-agro-dijon.hal.science/hal-05335373v1
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[hal-05369431] Territorialiser pour innover dans les filières de viande bovine ?
La présente communication propose de prolonger les analyses de la diversité des formes de coordination dans les filières territoriales de viande bovine, à partir du cas de la filière Herriko Haragia, du Pays basque. Elle s’appuie sur des données qualitatives issues d’une enquête de terrain, qui comprend des entretiens semi-directifs menés avec des acteurs publics et privés engagés dans la filière locale et de l’analyse documentaire. La grille d’analyse proposée vise à restituer la trajectoire historique et socioéconomique de cette démarche, en prenant en compte à la fois la diversité des acteurs et des modes de coordination, ainsi que leurs formes de matérialité (signes de qualité, contrats, règles, investissements…). C’est alors la capacité « à innover » des filières territorialisées qui est interrogée, de même que leur indépendance vis-à-vis des filières longues plus classiques.
ano.nymous@ccsd.cnrs.fr.invalid (Florence Hellec) 17 Nov 2025
https://hal.inrae.fr/hal-05369431v1
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[hal-05345522] Quelle transition dans le système alimentaire en Bourgogne Franche-Comté ? : Approvisionnement de la restauration collective par les circuits de proximité
Le système alimentaire actuel atteint des limites de soutenabilité environnementale économiques et sociales (Rastouin, 2024). En France, le Grenelle de l’environnement en 2007 promeut la mise en place des circuits courts et de proximité. Mais la demande finale reste trop limitée, les acteurs publics utilisent alors le levier de la restauration collective pour reterritorialiser le système alimentaire et améliorer la qualité nutritionnelle de l’alimentation. L’objectif de cette communication sera double : 1) analyser quelle a été l’activation des proximités organisées et géographiques par la restauration collective ? Cette activation a-t-elle contribué à la diffusion de l’innovation ? 2) La reterritorialisation a-t-elle contribué à créer des risques d’inégalités territoriales ? Nos résultats, fondés sur l’utilisation de la base de données Agrilocal, montrent que la diffusion de l’innovation reste limitée en Bourgogne Franche-Comté et que le Covid a ralenti la transition du système alimentaire.
ano.nymous@ccsd.cnrs.fr.invalid (Delphine Gallaud) 04 Nov 2025
https://institut-agro-dijon.hal.science/hal-05345522v1
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[hal-05329319] Innover en viticulture : les trajectoires de changement de pratiques des domaines viticoles en Bourgogne
Dans un contexte d’adaptation au changement climatique et de transition agroécologique, cette communication analyse les changements de pratiques en matière de gestion de la matière organique des sols dans la viticulture bourguignonne. S’appuyant sur une enquête par entretiens semi-directifs menée auprès de 30 viticulteurs de Bourgogne, elle interroge les facteurs individuels, techniques, économiques et sociaux influençant l’innovation. L’étude montre que l’appartenance à des réseaux professionnels, la trajectoire des exploitants/exploitation, le prestige des appellations, les circuits de commercialisation ou la politique des coopératives jouent un rôle déterminant. Les connaissances agronomiques, parfois lacunaires, conditionnent également les capacités d’innovation, tout comme les possibilités d’investissement ou d’accès à des équipements adaptés. En croisant caractéristiques des exploitants/exploitations, pratiques culturales et dynamiques collectives, cette recherche interdisciplinaire (projet MOCCA), donne à voir des configurations de trajectoires de viticulteurs, variables selon leur degré d’engagement dans les transitions agroécologiques, et identifie les freins et leviers aux apprentissages en cours.
ano.nymous@ccsd.cnrs.fr.invalid (Marie David) 24 Oct 2025
https://institut-agro-dijon.hal.science/hal-05329319v1
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[hal-05334630] Filière biosourcée émergente et nouveaux modèles d’affaires : l’exemple de la valorisation de la laine de mouton
En réponse aux préoccupations environnementales croissantes et à la recherche de ressources locales durables, cette étude examine l’émergence de micro-secteurs biosourcés à travers l’exemple de la valorisation de la laine de mouton en France. Traditionnellement considérée comme un déchet, en particulier lorsqu’elle provient de races à viande, la laine brute reste largement sous-exploitée en dehors de l’industrie textile. Pourtant, ses propriétés physico-chimiques offrent un potentiel prometteur pour des utilisations alternatives telles que l’isolation thermique et acoustique, le paillage agricole et les composites écologiques. S’appuyant sur une revue de la littérature et une étude de cas de Vert Laine, une start-up basée en Bourgogne, cette recherche explore la structuration de ces nouvelles filières, les acteurs impliqués et les obstacles auxquels ils sont confrontés. À l’aide du cadre de modèle d’affaire circulaire BM3C2, l’étude analyse les modèles économiques alignés sur les principes de l’économie circulaire. Elle vise à identifier les dynamiques d’innovation et les partenariats territoriaux nécessaires pour développer de telles initiatives. Cette recherche contribue au débat plus large sur les modèles de production durable, la valorisation des ressources locales et la transition vers une bioéconomie circulaire.
ano.nymous@ccsd.cnrs.fr.invalid (Sophie Reboud) 28 Oct 2025
https://institut-agro-dijon.hal.science/hal-05334630v1
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[hal-05321991] Assessing carbon dioxide emission reduction potential using a cost approach
Departing from traditional approaches that treat carbon dioxide (CO2) emissions as a bad output, therefore relying on the weak disposability assumption, this paper considers CO2 emissions as a cost to minimise, thus preserving the materials balance condition. In particular, we extend the pollution cost approach (Coelli et al., 2007) by evaluating peer countries on their carbon intensity per total energy consumption, in addition to their energy use. The proposed methodology is then applied to estimate the extent to which a selection of 33 OECD and BRICS countries can reduce their CO2 emissions, given their gross domestic products and populations over the 2001–2019 period. Our results indicate that the period mean reduction potential for CO2 emissions of 60 % (i.e. an efficiency level of 40 %) can be decomposed into a 33 % reduction in energy intensity and a 40 % decrease in the carbon intensity of energy (i.e. efficiencies of 67 % and 60 %, respectively).
ano.nymous@ccsd.cnrs.fr.invalid (Kassoum Ayouba) 20 Oct 2025
https://hal.inrae.fr/hal-05321991v1
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[hal-05110567] Why do we keep killing crows? Farmers’ attachment to a controversial method in an attempt to protect their crops
Corvids are responsible for important damage to spring crops across western Switzerland and have become a significant concern for the farming community. Various prevention methods have been tested to reduce agricultural losses, but no suitable solution has been found. In an attempt to solve this problem, the Swiss farming community is asking the authorities, despite its relative unpopularity, to liberalize control shooting. However, the effectiveness of this control method has never been scientifically proven, and the few studies in ecology or conservation biology that question its efficiency are not considered by the farming community. This raises the question of why the attachment to an uncertain and controversial method is so strong. By bringing out the farming community's dominant representation of the problem of corvid damage and analyzing the stakeholder network dynamics, this article aims to highlight the social logics and multifactorial dimension of choosing a control method. We found that the fight against corvid damage is part of a more general conflict that pits the farming community against the rest of society on issues of ecology and production. Various social, cultural and cognitive logics lead the farming community to remain attached to control shooting, making a cognitive gamble that has no solid scientific basis. To succeed in getting farmers to abandon control shooting, three conditions must be met: the emergence of a replacement innovation, awareness of the negative practical, economic and ethical aspects of control shooting, and improved access to scientific knowledge on the subject in the farming world.
ano.nymous@ccsd.cnrs.fr.invalid (Juliette Craplet) 13 Jun 2025
https://institut-agro-dijon.hal.science/hal-05110567v1
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[hal-05232549] Assessing the eco-efficiency of inter-municipal waste management services in France
We assess the eco-efficiency of French inter-municipal cooperation entities in charge of waste management. We employ a conditional order-m approach to (i) estimate their eco-efficiency considering variables characterizing their environmental context, (ii) evaluate the effect of these contextual variables on the eco-efficiency. Our results demonstrate that the population size, the type of area (e.g., tourist, rural), and the waste pricing systems significantly influence eco-efficiency. These findings underscore the importance of tailoring local waste management policies to the specific characteristics and available resources of each area. They provide valuable insights for local authorities seeking to enhance eco-efficiency and optimize waste management practices. © 2025 The Authors
ano.nymous@ccsd.cnrs.fr.invalid (Aissatou Ndimblane) 01 Sep 2025
https://hal.inrae.fr/hal-05232549v1
