Urban fringes represent very complex landscapes because of their proximity and mutual dependency with cities and rural areas. These landscapes may be considered fuzzy entities characterized by rapid transitions. An uncontrolled development of urban sprawl and land use changes in peri-urban areas may determine negative impacts on natural, economic and social components. Landscape analysis of these interfaces can be effectively supported by GIS spatial modelling. The urban density index (IDU), developed through spatial analysis techniques, expresses punctually the territorial gradients generated by the presence of settlements and allows the identification of the urban fringes in the two periods under investigation. These contexts have been characterized and analyzed quantitatively using detailed land use data. The comparison of diachronic information highlights the transformations of peri-urban landscapes that appear mainly related to the modifications of spatial configuration of urban areas and to the changes of agricultural systems.
I paesaggi periurbani del Perugino. Analisi delle trasformazioni dei gradienti insediativi e dell’uso del suolo.
VIZZARI, Marco
2010
Abstract
Urban fringes represent very complex landscapes because of their proximity and mutual dependency with cities and rural areas. These landscapes may be considered fuzzy entities characterized by rapid transitions. An uncontrolled development of urban sprawl and land use changes in peri-urban areas may determine negative impacts on natural, economic and social components. Landscape analysis of these interfaces can be effectively supported by GIS spatial modelling. The urban density index (IDU), developed through spatial analysis techniques, expresses punctually the territorial gradients generated by the presence of settlements and allows the identification of the urban fringes in the two periods under investigation. These contexts have been characterized and analyzed quantitatively using detailed land use data. The comparison of diachronic information highlights the transformations of peri-urban landscapes that appear mainly related to the modifications of spatial configuration of urban areas and to the changes of agricultural systems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
