Suchergebnisse

La caduta di uno o più alberi in bosco è un fenomeno ordinariamente riconducibile alla dinamica naturale dell'ecosistema e accettato come tale. Quando fatti di questo genere si verificano in ambito urbano o lungo fasce boscate rasenti strade periurbane molto frequentate, il fenomeno viene percepito come un evento traumatico per le possibili conseguenze negative a danno di persone e cose e relative implicazioni di carattere legale. In questo caso si configura un disservizio ecosistemico che necessita di un'accurata attività di prevenzione. Diversi fattori, spesso concomitanti, possono determinare la caduta di un albero. L'articolo riporta i principali risultati delle indagini multidisciplinari svolte nell'ambito di un caso di studio riguardante le fasce boscate lungo alcuni tratti di una strada provinciale molto trafficata. Attraverso analisi di dati meteorologici e l'interpretazione di rilievi geotecnici e geofisici e dendrometrici sono state tratte alcune conclusioni sulle cause della caduta degli alberi, indicando alcune linee di gestione delle fasce boscate per la prevenzione della caduta degli alberi sulla strada.

Mediterranean stone pine reforestations are common characteristics of the Italian Tyrrhenian coast, which mostly maintain uniform and monolayered stand structures. However, improving structural diversity is an effective climate change adaptation strategy in forest management. The aim of this study was to implement a methodology which allows distinct reforested areas such as a single green infrastructure to be managed according to the surrounding land use and the characteristics of the forest stands. 240 hectares of Mediterranean stone pine forests located along a 16 km strip of the Lazio coast (Central Italy) were mapped. Twelve attributes describing the pine stands and showing possible constraints for future management decisions were associated to each forest patch. A hierarchical cluster analysis was performed to group the pinewood patches according to their similarity level and five different groups were identified. For each group, different silvicultural methods were proposed to guide the compositional and structural evolution of the stands, in order to make them suitable for providing services required locally and increasing overall diversity at landscape scale. The results of the study highlight how coastal land uses can offer effective inputs to differentiate the management of forest systems and therefore achieve greater variety and resilience in the landscape over time. This approach is particularly useful in the case of very homogeneous stands such as the stone pine reforestations under study.

This review presents a multidisciplinary framework for integrating the ecological, regulatory, procedural and technical aspects of forest management for fires prevention under Mediterranean environments. The aims are to: i) provide a foreground of wildfire scenario; ii) illustrate the theoretical background of forest fuel management; iii) describe the available fuel management techniques and mechanical operations for fire prevention in forest and wildland-urban interfaces, with exemplification of case-studies; iv) allocate fire prevention activities under the hierarchy of forest planning. The review is conceived as an outline commentary discussion targeted to professionals, technicians and government personnel involved in forestry and environmental management.