Silvia Autuori (Italy) 1; Francesco De Paola (Italy) 1; Francesco Pugliese (Italy) 1; Marialuce Stanganelli (Italy) 1; Gianfranco Urciuoli (Italy) 1; Farrokh Nadim (Norway) 2; Amy Oen (Norway) 2; Maurizio Giugni (Italy) 1
1 - University of Naples Federico II; 2 - Norwegian Geotechnical Institute
The frequency and intensity of hydro-meteorological events such as landslides, flash floods, drought and avalanches appear to have an increasing trend in many mountainous and rural areas because of climate change. The risk posed by these events to the population and ecosystem could be mitigated by properly implementing Nature-Based Solutions (NBSs), against/combined with traditional grey solutions. Compared to traditional grey solutions, NBSs provide more natural features and processes using locally adopted, resource-efficient and systemic interventions.
Nevertheless, effective tools to assess the benefits and environmental impacts of NBSs are lacking. Moreover, plans and actions involving green areas in many cases do not include the NBSs as part of climate change adaptation strategy. Several of European Union’s Horizon 2020 projects aim to address these gaps in knowledge about NBSs. This contribution describes the framework tool to be developed in the H2020 Innovation Action project PHUSICOS – ‘According to Nature’. PHUSICOS aims to demonstrate the reliability NBSs for reducing the risk posed by extreme weather events, with reference to different climatic scenarios and temporal scales. The PHUSICOS’s premise is that the nature itself is a source of ideas and solutions for mitigating the risk posed by hydro-meteorological events. Nature-based designs, including hybrid-solutions, are often elegant, effective and frugal, providing ecological, social and economic resilience for society. Three demonstrator sites and three concept cases allow PHUSICOS to test the implemented procedures on field, making the local, technical and administrative stakeholders as active elements, through the activation of a Living Lab (LL) approach.
To address the aforementioned needs to mitigate the increased risk due to climate change impact and related environmental threats, PHUSICOS is going to implement tailored framework tools to 1) assess the NBSs application in an effective way; 2) increase the resilience at a basin scale with focus on risk mitigation and climate change adaptation. In this work, the hierarchic framework tool in development to assess the NBSs effectiveness is described. The tool is aimed at both estimating the Performance Indicators (PI) and implementing a multi-disciplinary methodology for aggregation and weighting procedures. A multi-disciplinary/multi-criteria approach allows the proposed tool to estimate the NBSs benefits from technical, environmental, social, economic and cultural points of view.
The performance assessment of different planning scenarios (e.g. Baseline Scenario, NBSs Scenarios, Hybrid Scenarios) with reference to different climate scenarios and temporal scales (Short-Term, Mid-Term, Long-Term) is implemented and results from a tested case-study are provided and discussed.