De l'importance du maintien de la préférence communautaire pour l'agriculture française

Since a few years, computable general equilibrium models have been intensively used to analyse environmental policies. These models rely on a walrasian framework and allow for an explicit description of economy/environment interactions. In the first section, we describe briefly the main features of the computable general equilibrium models. Then in the second section we focuse on various ways to model environmental feedbacks on households or firms behaviours. We illustrate the notions of static and dynamic non-separability (or static and dynamic feedbacks) by taking examples from the recent literature. In the third section we finally present the scope of the calculable general equilibrium model and their role in the rise of the so-called 'double dividend' issue.