Safeguarding Coastal Cities: Linking Nature-Based Solutions to Sea Level Rise Adaptation : a Case Study of Florianópolis, Brazil.
Borelli da Silva, Bianca (2023)
2023
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2023112832461
https://urn.fi/URN:NBN:fi:amk-2023112832461
Tiivistelmä
Coastal cities face various additional risks associated with climate change, including sea level rise, storm surges, and coastal flooding from high tides. Conventional approaches, such as the use of hard infrastructure, can lead to adverse impacts on natural systems. Hence, there is a pressing need to explore more sustainable alternatives, such as nature-based solutions (NbS), to address these risks effectively. Therefore, the aim of this research was to identify the opportunities for using nature-based solutions strategies in a case study city in Brazil, Florianópolis, for its adaptation to sea level rise and coastal floodings, as well as provide replicable perception for coastal cities to implement nature-based solutions in their adaptation process to sea level rise. The investigation incorporates a combination of methodologies, including literature review, questionnaires, and spatial mapping of NbS opportunities in the case study city, where diverse outcomes were generated by adopting a multifaceted and comprehensive approach.
Drawing on a contextual analysis of the case study and in line with the research objectives and questions, a selection of strategies has been formulated for adapting coastal cities to projected sea level rise. These strategies encompass the establishment and preservation of mangroves, sandy shores, urban forests, and coastal green corridors. Furthermore, the mapping of risk-prone areas provided valuable insights into priority zones susceptible to coastal flooding, and the spatial distribution of the chosen nature-based solutions within the city helped identify feasible opportunities for their implementation. The process of identifying spatial opportunities for NbS proved to be a powerful tool in devising concrete NbS planning and execution options.
The ensuing discussion highlights the challenges and barriers encountered in considering NbS within the city's context. Moreover, a set of recommendations is proposed to aid the city in overcoming these challenges. In a broader context, the collection of strategies, a framework, and an adaptation pathway, constructed based on research results, can serve as crucial initial steps for coastal cities in their adaptation to sea level rise projections.
Drawing on a contextual analysis of the case study and in line with the research objectives and questions, a selection of strategies has been formulated for adapting coastal cities to projected sea level rise. These strategies encompass the establishment and preservation of mangroves, sandy shores, urban forests, and coastal green corridors. Furthermore, the mapping of risk-prone areas provided valuable insights into priority zones susceptible to coastal flooding, and the spatial distribution of the chosen nature-based solutions within the city helped identify feasible opportunities for their implementation. The process of identifying spatial opportunities for NbS proved to be a powerful tool in devising concrete NbS planning and execution options.
The ensuing discussion highlights the challenges and barriers encountered in considering NbS within the city's context. Moreover, a set of recommendations is proposed to aid the city in overcoming these challenges. In a broader context, the collection of strategies, a framework, and an adaptation pathway, constructed based on research results, can serve as crucial initial steps for coastal cities in their adaptation to sea level rise projections.