There is general agreement across the scientific communities about an unmet need for a high-resolution, coastal dune multitemporal analysis. It has not been possible to construct such approach from long-time existing sources. Identification and mapping of coastal dunes in geomorphology are based on geomorphological survey, interpretation of topographic maps and aerial photos. Considerable enhancement for morphometric dune system evolution can be obtained through generation of a hierarchical approach, by means of the integration of different spectral and spatial data. This research deals with the development of a hierarchical approach to study the changes occurred in the beach-dune system of Circeo National Park (Central Italy) within approximately 30 years (1977-2005) in order to: (1) identify the correlation between beach and dune evolutionary trends and (2) to assess the current natural condition of the dune system, with special attention to a high vulnerable coastal stretch. The evolution of the physiographic unit has been detected through the acquisition of significant parameters: morphology of beach and dune, dynamics, anthropogenic impact,. The analysis was carried out using aerial photographs (1977-1999) and QuickBird images (2005). As a final result the relation between classification characteristics and the spatial and temporal hierarchy of dune system components is discussed. Results show that the correlation between the different parameters detected allowed the identification of the main factors acting between beach and dune system. Within the results we present and argue a framework for hierarchical dunes ecosystem classification, evolution and mapping, exemplifying that the approach is particularly valuable as a comprehensive tool for scientific analyses on behalf of environmental policy.
|Pages (from-to)||87 - 97|
|Number of pages||11|
|Journal||Rendiconti Online Societa Geologica Italiana|
|Publication status||Published - 2009|
All Science Journal Classification (ASJC) codes