Abstract
Studies carried out in the State of Pará (Brazil) reveal that the northeastern part of the coastal zone has been severely impacted by storm floods and erosion processes in the last 25 years. In response to these impacts, a variety of coastal defense measures and adaptation strategies have been applied in the region, but with only limited success. The work described here intends to support the Coastal Zone Management Program of Pará through the identification, assessment and classification of the coastal zone’s overall vulnerability to flood and erosion risks. This is achieved by using a geographic information system (GIS) in order to create a so-called Composite Vulnerability Index (CVI). The CVI includes 16 different variables, describing both the natural and Socio-economic conditions which determine the risk situation in the coastal zone. By means of GIS, these variables are classified, weighted and combined to yield a CVI. This index now provides a reliable, easily applicable tool for the measurement and description of the coastal hazards within and among the 22 municipal districts in the State of Pará. The vulnerability index describes five classes, from very low to very high vulnerability. The key results of this study are then presented in three maps, showing the natural, the Socio-economic and the total (=composite) vulnerability for each of the municipal districts. The chapter critically analyzes the confidence levels for the results obtained and the possibilities to update the present variables or to include new ones. Considering the Coastal Zone Management Program of Pará, the results are applied to support the spatial distribution of strategies and measures (retreat, protection, accommodation, non-action) against natural hazards for each one of the planning and management units.
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Notes
- 1.
Salinópolis, São João de Pirabas, Viseu, Marapanim, Quatipuru and Fernando Belo (Viseu).
- 2.
Fernandes Belo and São José do Piria (Viseu), Caratateua (Bragança), Emborai and Itapixuna (Augusto Corrêa), Japerica (São Jõao de Pirabas), Murajá (Curuçá), and Cafezal (Magalhães Barata).
- 3.
Fernandes Belo and São João do Piria (Viseu), Japerica (São João de Pirabas), Ponta de Ramos, Lauro Sodre and Murajá (Curuçá), Aturai and Itapixuna (Augusto Corrêa), Maruda (Marapanim), São Roberto and Boa Esperança (Maracanã), and Caratateua and Tijoca (Bragança).
- 4.
Fernandes Belo and São João do Piria (Viseu), Japerica (São João do Pirabas), Caratateua, Nova Mocajuba and Tijoca (Bragança), Aturai, Emborai and Ipixuna (Augusto Corrêa), Boa Esperança and São Roberto (Maracanã), Ponta de Ramos, Lauro Sodre and Murajá (Curuçá), and Marudá (Marapanim).
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Szlafsztein, C., Sterr, H. (2010). Coastal Zone Management Tool: A GIS-Based Vulnerability Assessment to Natural Hazards. In: Saint-Paul, U., Schneider, H. (eds) Mangrove Dynamics and Management in North Brazil. Ecological Studies, vol 211. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13457-9_23
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