Recomposition des systèmes agricoles de moyenne montagne. Mutations et perspectives. Le cas de l'Aveyron

The debate about the functions of agriculture wich set an competitiv agriculture against a "different agriculture", is re-actualized by the reform of European Politic of Agriculture. This question is still more important in less favourized areas. This study in focused of the transformation of farming systems of such areas face of the agriculture crisis and the reform of European Politic of Agriculture.