MONUMENTAL TREES AS COMMON GOOD: THE CENSUS AT THE BASE OF A GOOD LANDSCAPE PLANNING.

The landscape transformation processes in Italy, in the last decades, involve mainly environments on the fringes of city. In the transformations of land use in urban areas, whose boundaries are not uniquely defined, the naturalistic landscapes take on particular importance today because they produce positive externalities, especially because they are an integral part of a deeply anthropizedarea. When these natural areas fall within in urban and peri-urban areas (eg, parks, villas and protected areas), they may represent a reality in which historical events related to past management have allowed the persistence of areas of particular naturalistic and landscape importance, in other situations, instead, natural areas have been replaced by the significant processes of urbanization. In this paper we report the results of a study conducted in the State Natural Reserve of Castelporziano, an environment located on the outskirts of Rome, where the presence of permanences of high landscape and nature value is markedly high. In particular, the work focuses on the development of a methodological protocol aimed at the census of forest areas or single trees that have characters of monumentality, as required by LR 38/2002, which are considered important examples as ecological dynamics and as site management and, as such, a common good to defend and improve. The census provides the basis for defining adequate lines of planning for the protection and usability for this important common good.