Vulnerabilidade ambiental da planície costeira de Caravelas (Bahia) : uma proposta geossistêmica

• Autor(a) principal: Souza, Sirius Oliveira
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/3610
• topic: Geofácies; Geomorfologia costeira; Uso e ocupação da terra; Bahia; Coastal geomorphology; Use and occupation of the land; Geografia; Geomorfologia - Caravelas (BA); Solo - Uso - Caravelas (BA); 91

The use pressure on coastal zones and their effects on the equilibrium of ecosystems have been a subject often discussed in the media and above all in the scientific literature. One major concern is related to speed with which this pressure happens and the slowly execution of the measures proposed by scientific research. Such a situation it takes the planners to opt for systemic approaches to natural resource management, to the look for synthesise the scientific information to develop models of integrated coastal studies. From these studies, the objective of this work was to analyze the environmental vulnerability of the Caravelas Coastal Plain, in the state of Bahia (Brazil) by means of geoprocessing techniques and remote sensing in a Geographic Information System (GIS), and still make available a support tool to decision making for spatial and environmental planning. Under the systemic view, we tried to characterize the main types of use and occupation land in the last twentynine, whereas for the full realization of this characterization, were also analyzed the geofacies present in the Caravelas Coastal Plain that encompass also anthropogenic developments, signaled the change of the environment as a whole. Finally, this research were derived environmental vulnerability indices from the integration of geological, soil, slope and use and occupation of land characteristics. Classes that have high and very high vulnerability include the mangroves, the tidal lagoons floodplains, the sandy terraces covered by geofácie Mata Seca de Restinga and the coast line. In the class has an average environmental vulnerability are included coastal tableland, covered by geofacies of crops. The environmental vulnerability map produced allowed the understanding of the different levels of vulnerability of each mapped drive front of certain anthropogenic pressures and can be used as a tool for coastal management for local and regional planning.