National audience The agricultural typologies of the French-speaking municipalities show that in areas with urban influence, farm reconfigurations are rapid and significant in terms of manpower, employment and land footprint (SEGESA-DRIAAF). The Green Belt and its fringes present an ambivalent situation of vulnerability and assets for farms. Vulnerability stems from the ageing of chefs, the relatively low establishment rate, as well as competition and rigidity in the land market. At the same time, it offers opportunities linked to the proximity of the urban front, with intensification strategies based on high added value production, diversification into direct sales and farm care activities and a strong mobilisation of labour. Farm development arrangements depend on cost/benefit trade-offs between land burdens and constraints and the capacity of high-value farming to generate income.