Análise da paisagem das bacias hidrográficas na região metropolitana de Goiânia

• Autor(a) principal: Silva, Marcos Vinícius Alexandre da
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/7594
• topic: Bacias hidrográficas; Região metropolitana; Geotecnologia; Índice de fragmentação; Watershed; Metropolitan area; Geotechnology; Fragmentation index; CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS

The knowledge of different types of land use provides the creation of parameters for the promotion of urban and environmental planning and territorial reorganization, either by county or watershed, being able to be performed through indexes. The aim of this assignment was to scale the landscape in the Metropolitan Region of Goiânia - RMG, using an index of fragmentation of natural habitats, ranging from minimal to strong fragmentation. The index, which suffered adjustments, was used to assess the landscape metrics, which initially held up an exploratory analysis of soil cover. Therefore, the mapping of the elements that characterize the landscape and permanent preservation areas in relation to current legislation was performed, through the ResourceSat-1 satellite images and altimetry data. In the region, were verified 81% of urban area and 19% of rural area, being inversely proportional to the number of inhabitants of areas. Watersheds of eminently urban use were found with up to 73.65% in urban areas and with a maximum of 41.18% of the area covered by native vegetation. The region with the most impacted watersheds, and their permanent preservation areas occupied mostly by agriculture, livestock or urban area is the northwest, mainly due to the process of conurbation in the municipalities of Goiânia, Trindade and Goianira. The use of geoprocessing and statistical analyzes provided the realization of spatial configuration use pattern and land use in the metropolitan area of Goiânia, using the Steenmans and Pinborg index. Through this assignment, the degree of connectivity and fragmentation of native vegetation remaining was verified, portraying the landscape of the region. The category average fragmentation had the largest representation with 39.12% of the area at RMG, followed by little with 33.17%, minimal with 4.19%, moderate with 0,4% and strong with 0.03%. Besides these were identified polygons without significant remnant native vegetation, representing approximately 23.09% of the territory.