The Prosecco hills of Conegliano and Valdobbiadene, recognized as a UNESCO World Heritage Site, boast a distinctive yet fragile wine-growing landscape that is becoming more vulnerable to the impacts of climate change. The intensification of extreme weather events in recent decades has accentuated surface instability phenomena, including widespread erosion and surface landslides. These phenomena pose a threat to the environment and local agricultural activities.The Prosecco Hills of Conegliano and Valdobbiadene, recognized as a UNESCO World Heritage site, are characterized by a unique yet fragile viticultural landscape, increasingly exposed to the effects of climate change. In recent decades, the intensification of extreme weather events has exacerbated shallow instability processes, such as widespread erosion and shallow landslides, posing a threat to both the environment and local agricultural activities. This thesis aims to identify potentially unstable areas within the region by analyzing surface runoff dynamics and terrain morphology, using high-resolution LiDAR data. Through the use of GIS software and the Flow Accumulation (D-Infinity) function, the drained area and the RPII (Relative Path Impact Index) were calculated. These represent useful tools for detecting areas where runoff becomes anomalous or highly concentrated when intercepted by anthropogenic features such as rural roads and embankments, particularly during intense rainfall events. The analysis was carried out across the entire Prosecco Hills area, with a specific focus on zones exhibiting high geomorphological vulnerability. The results were summarized in a map highlighting critical points where major runoff deviations and concentrations occur. Based on the outcomes of the study, several guidelines are proposed for mitigation measures addressing potential shallow-instability phenomena, with the goal of fostering more sustainable and resilient land management.
Le colline del Prosecco di Conegliano e Valdobbiadene, riconosciute patrimonio dell'umanità dall'UNESCO, sono caratterizzate da un paesaggio viticolo unico, ma fragile, sempre più esposto agli effetti del cambiamento climatico. Negli ultimi decenni, l’intensificarsi di eventi meteorologici estremi ha accentuato i fenomeni di instabilità superficiale, quali l’erosione diffusa e le frane superficiali, rappresentando una minaccia sia per l’ambiente che per le attività agricole locali. Questa tesi si propone di individuare le aree potenzialmente instabili del territorio tramite l'analisi del deflusso superficiale e della morfologia del terreno, utilizzando dati LIDAR ad alta risoluzione. Grazie all'uso del software GIS con la funzione Flow Accumulation (Dinfinito), è stato possibile calcolare l'area drenata e l'indicatore RPII (Relative Path Impact Index), strumenti utili per individuare le zone in cui il deflusso risulta anomalo o concentrato, quando intercetta elementi antropici come strade rurali e ciglioni, a causa di eventi piovosi intensi. L’analisi è stata condotta sull’intero territorio delle Colline del Prosecco, con un focus particolare sulle aree ad alta vulnerabilità geomorfologica. I risultati sono stati rappresentati in una mappa di sintesi che evidenzia i punti critici in corrispondenza delle principali deviazioni e concentrazioni di flusso. Sulla base dei risultati ottenuti, vengono infine proposte alcune linee guida per interventi di mitigazione dei possibili fenomeni di dissesto superficiale, con l’obiettivo di promuovere una gestione del territorio più sostenibile e resiliente.
Analisi delle aree potenzialmente instabili nelle colline del Prosecco di Conegliano e Valdobbiadene mediante l'uso di dati LIDAR e alterazione del deflusso superficiale
PESCE, ANDREA
2024/2025
Abstract
The Prosecco hills of Conegliano and Valdobbiadene, recognized as a UNESCO World Heritage Site, boast a distinctive yet fragile wine-growing landscape that is becoming more vulnerable to the impacts of climate change. The intensification of extreme weather events in recent decades has accentuated surface instability phenomena, including widespread erosion and surface landslides. These phenomena pose a threat to the environment and local agricultural activities.The Prosecco Hills of Conegliano and Valdobbiadene, recognized as a UNESCO World Heritage site, are characterized by a unique yet fragile viticultural landscape, increasingly exposed to the effects of climate change. In recent decades, the intensification of extreme weather events has exacerbated shallow instability processes, such as widespread erosion and shallow landslides, posing a threat to both the environment and local agricultural activities. This thesis aims to identify potentially unstable areas within the region by analyzing surface runoff dynamics and terrain morphology, using high-resolution LiDAR data. Through the use of GIS software and the Flow Accumulation (D-Infinity) function, the drained area and the RPII (Relative Path Impact Index) were calculated. These represent useful tools for detecting areas where runoff becomes anomalous or highly concentrated when intercepted by anthropogenic features such as rural roads and embankments, particularly during intense rainfall events. The analysis was carried out across the entire Prosecco Hills area, with a specific focus on zones exhibiting high geomorphological vulnerability. The results were summarized in a map highlighting critical points where major runoff deviations and concentrations occur. Based on the outcomes of the study, several guidelines are proposed for mitigation measures addressing potential shallow-instability phenomena, with the goal of fostering more sustainable and resilient land management.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/99222