Technological Hazard Vulnerability: A GIS-Based Approach for Supporting Environmental Zoning
Autor: | Tatiana Laufer da Silva, Iporã Possantti |
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Rok vydání: | 2020 |
Předmět: |
Watershed
Geographic information system 010504 meteorology & atmospheric sciences Geography Planning and Development Vulnerability Wetland 010501 environmental sciences 01 natural sciences Water Quality 0105 earth and related environmental sciences General Environmental Science geography geography.geographical_feature_category business.industry Environmental resource management Estuary General Medicine Hazard Lakes Geographic Information Systems Environmental science Water quality business Zoning Brazil Environmental Monitoring |
Zdroj: | Integrated environmental assessment and managementREFERENCES. 17(2) |
ISSN: | 1551-3793 |
Popis: | Technological hazard assessments are extremely rare in Brazil, despite their importance for planning. Aquatic systems are of particular concern, since they are the endpoint of every process occurring in the watershed, including technological disasters. Thus, our goal is to map the technological hazard vulnerability in lagoon systems though a geographic information systems (GIS) model. The technological hazard vulnerability model consists of the spatial overlapping of technological pressure and fragility, having environmental systems as spatial units. The methodology was applied to the lagoon systems of the Rio Grande do Sul State, Southern Brazil, as a case study. The very high vulnerability of the Northern Guaiba Lake is due to the high concentration of technological infrastructures combined with high fragilities of wetland systems. In the Patos Lagoon Estuary, highly vulnerable systems consist mostly in shallow waters. The Mirim Lagoon was less vulnerable compared to other systems, due to a much smaller occurrence of elements of technological pressure. The proposed methodology allowed for the identification of environmental systems particularly vulnerable to technological hazards, where management efforts must be more intense. The results were used for the Ecological-Economic Zoning of the Rio Grande do Sul, as well as to revise the water quality framework of the Patos Lagoon estuary, currently underway. Integr Environ Assess Manag 2021;17:445-454. © 2020 SETAC. |
Databáze: | OpenAIRE |
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