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Economie Publique

UMR Economie Publique

Séminaires

2018

18 septembre 2018

Trade Shocks, Spatial Sorting and Urban Sprawl
Clément Nedoncelle, co-auteur El-Mehdi Aboulkacem

Résumé :

We study the impact of international trade shocks on spatial allocation of workers. We provide a theoretical framework emphasizing the role of trade shock on residential choices. We find empirical support for the micro mechanism using employer-employee data for the French Ile-de-France region (surrounding Paris). We estimate that increases in wages coming from exogenous trade activities increase commuting distance for these workers. At the aggregate level and at the French national level, we estimate that trade shocks are positively associated to urban sprawling. Our results cast novel insights upon the consequences of trade activities on spatial allocation of workers.

 

19 juin 2018

Preferences for biodiversity offset contracts on arable land: a choice experiment study with farmers
Anne-Charlotte Vaissière (Univ Paris Sud), co-écrit avec Léa Tardieu (BETA, Université Lorraine, INRA, AgroParisTech), Fabien Quétier (Biotope, France) et Sébastien Roussel (CEE-M, Univ. Montpellier, CNRS, INRA, SupAgro, Univ. Paul Valéry Montpellier 3)

Résumé :

Biodiversity offsetting (BO) is aimed at achieving no net loss of biodiversity in the context of economic development. Through a choice experiment in Northern France, we show that farmers have a clear preference for not signing up BO contracts. The contracts they accept may only be suitable for offsetting temporary impacts on already degraded areas of natural habitat but not for permanent impacts on high-quality habitat. We find that the introduction of a conditional monetary bonus can improve the organisational and ecological efficiency of BO because it increases the enrolled acreage in a BO contract per farmer albeit at an increased cost for developers.

 

15 mai 2018

Pollution permits and spatial competition
Jean Philippe Nicolai (ETH Zurich)

 

12 avril 2018

The Heterogeneous Impact of Coal Prices on the Location of Dirty and Clean Steel Plants
François Cohen

Résumé :

Climate policy will predominantly affect industries that primarily rely on fossil fuels, such as steelmaking. Within these industries, exposure may be different by country according to theenergy-intensity of national plants. We estimate the effect of coal prices on steel plant location worldwide and production preferences for BOF, a polluting technology, and EAF, a greener one. A 1% increase in national coal prices reduces BOF and EAF installed capacity by around 0.51% and 0.34% respectively. We simulate the implementation of a stringent European carbon market with no border adjustment and find a non-negligible shift in steel production outside Europe, with limited impact on the technologies employed to produce steel. If applied worldwide, the same policy would primarily affect production in Asia, which relies on BOF and currently benefits from lower coal prices.

 

27 mars 2018

Water quantity management in a heterogeneous landscape with strategic farmers
Anne-Sarah Chiambretto, co-écrit avec Elsa Martin (CESAER, AgroSup Dijon, INRA).

Résumé :

Agricultural production contributes to many environmental problems. In semi-arid areas, agricultural irrigation causes the so-called waterlogging phenomena. This phenomena is both spatial and dynamic since percolations depends on soil quality summed up in landscape heterogeneity and evolves along time. Furthermore, farmers can develop strategies with respect to their contribution to percolation. We study regulation schemes to be implemented to restore the socially optimal spatial and temporal production plan of farmers in such a context. We show that the error made when implementing a fiscal scheme designed for myopic farmers whereas they are strategic does not always increase with the degree of heterogeneity of the landscape.

 

6 mars 2018

Efficiency and volatility of spot and futures agricultural markets: The impact of trade’s frequency
David Soares

Résumé :

Dans des marchés efficients, le prix d’un actif correspond à ses fondamentaux ; Cette approche est applicable aux prix spot (ex : le vrai blé) et à terme (ex : un engagement à acheter où vendre du vrai blé à un prix fixé à l'avance à une date fixée à l'avance) des matières premières. La fragmentation des ordres (division d'un ordre d'achat où de vente en plusieurs ordres) affecte la dynamique des prix entraînant une modification de la fréquence des échanges sur les marchés, de la fréquence relative des échanges et des quantités échangées.
Nous montrons tout d'abord que les fréquences des transactions ont une influence sur l'efficience des prix mais aussi sur leur volatilité intrinsèque. Cela nous amènera à étudier quels sont les impacts de la fragmentation observée sur les marchés aujourd'hui. Puis, nous étudierons l'existence d'un couple de fréquences optimales des transactions sur les marchés spot et à terme, qui permettraient d'obtenir des prix non biaisés et une volatilité intrinsèque minimale.

 

6 février 2018

Climate variable choice in Ricardian studies on European agriculture
Jauné Vaitkeviciute, coécrit avec Raja Chakir et Steven van Passe