Análise da fragilidade ambiental utilizando sistema de informação geográfica: ênfase na área urbana e de expansão urbana de Franca/SP

• Autor(a) principal: Siqueira, Adervaldo Guilherme [UNESP]
• Data de Publicação: 2015
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/142923; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2016-07-15/000867296.pdf
• topic: Geografia urbana; Geoprocessamento; Geomorfologia; Sistemas de informação geografica; Planejamento urbano; Franca (SP)

This study had as main objective to make an analysis of the environmental fragility of the urban area and the urban expansion area of the Franca/SP city, located in the northeastern portion of the São Paulo state. The study area presents emerging environmental weaknesses caused by soil erodibility, which associated with the use and land cover and slope, are marked by erosion processes, such as gullies and ravines. These weaknesses have been mapped through the Multicriteria Analysis method, widely used in environmental analyzes in GIS. The following variables were used: pedology, slope, use and land cover, integrated by weighted average, in which the influence of each variable and the weights of each thematic class were established, considering the characteristics of the study area. The soil map and the slope map were made from existing mappings, while the map of land use and occupation was designed from digital classification of high resolution satellite images. Considering the negative impacts on water resources, it was made a cut of map use and land cover of the Permanent Preservation Areas surrounding the springheads and on the banks of waterways, making it possible to point out the inadequacies and, from them, to establish criteria to improve environmental quality by watershed. To check the effectiveness of the environmental fragility map, the analysis of the results was carried out jointly to information from erosion, which were spatially through the interpretation of satellite imagery Pleiades. The analyzes were performed based on the current legislation (Law 12.651/2012). The resulting cartographic documents may provide support to appropriate urban and environmental planning, helping in decision...