![]() |
|
![]() |
EchosEconomic behaviour analysis of the "Stockbreeding wastewater system" actors at the Reunion IslandStefano Farolfi, Pierre Bommel, Christophe Le Page (Cirad)
The objective of this model is to simulate different wastewater management scenarios at Grand Ilet following different lines of environmental policy. We can so test how the adoption of the mentioned economic and command-control tools can induce different reactions. In the specific case of this study, two wastewater management alternatives are compared:
Following a provisional calculation of the two strategies' costs, the stockbreeder chooses every year which one to adopt the following year. The model is therefore able to simulate producers-polluters behaviour, and builds up scenarios which show at the same time economic (individual and social costs) and ecological (nitrogen pollution) dynamics. The four tested scenarios are based on the choice of environmental policy tools and on different sugarcane surface availability:
The figures above show the final state of the environment after 10 years. The map's left side corresponds to Grand Ilet's stockbreeding farms, and the right side corresponds to the sugarcane farms of the coastal area.
For further information, contact the author. ReferencesFarolfi, S., Le Page, C., Tidball, M. and Bommel, P. (2001). Gestion des effluents d'élevage à l'île de La Réunion: analyse du comportement économique des acteurs selon une approche standard et par un système multi-agent. Séminaire de recherche "Préservation et valorisation de l'eau dans le domaine littoral", St-Denis de la Réunion, 15 juin 2001. http://www.cirad.fr/presentation/programmes/espace/effluent/effluent.shtml
|