Metropolitan Development Policies and Demographic. Dynamics in Sicily

This article will take in consideration the co-existence in Sicily of different models of urbanisation with rising complex problems. Particularly we notice: A) in the coastal conurbations with infrastructural improvements, there is a timid decentralization of functions and the start of plans that would increase of the gateway functions on one hand, and processes of impoverishment of environment and reduction of economic potentialities on the other hand; B) in the inner and marginal areas, while some cities are marked from an unstoppable decline, others show an awakening of initiatives in many fields, from the productive activities to the tertiary and touristic ones. The Sicilian Regional Governments have adopted very different urban policies to front the necessity of various city typologies, since the second half of years ' 80, with the law n.9 of 1986, that it has defined limits and functions of the Sicilian metropolitan areas (M.A.). However, the difficulty to concretely start the activity of the M.A., according to the regional law, is appeared obvious in the next years also for the new Italian Constitution Reformation. Reformation that needs of new regional law from the Sicily and of the definition of the Territorial Urban Regional Plan.