A dinâmica do espaço urbano: Análise da evolução da mancha urbana do Vetor Norte da RMBH por meio de técnicas de sensoriamento Remoto e Geoprocessamento

Abstract

The available technology of remote sensing has been used by researchers and planners of the urban environment as an essential tool for the efficient mapping and control of metropolitan areas. Due toits superior space-time, spectral and radiometric resolutions, orbital data onboard second generation satellites, as the LandSat Thematic Mapper 5, have been increasingly applied to urban studies. This type of data might contribute to the development of urban research to a level that was impossible with first generation sensors. The multi-temporal analysis of the urban phenomenon, allowed by successive satellite passes,makes it possible to follow the urban areas expansion and to assess thestructure of such growth. In fact, the digital processing of LandSat TM 5 images obtained from different satellite passes in the course of 26 years old provided not only successive static pictures of the studied regions, but also it revealed the dynamics of the evolution process, providing subsidies for the subsequent studies. Urban studies of metropolitan areas demand an analysis that tackles not only urbanization expansion, but also the tendency of that growth as well as it should enable toidentify priority areas for more detailed investigations. The goal of the present work is to apply a broad analysis of urban growth to the specific case of the North axis of Belo Horizonte Metropolitan Region through the description of expansion processes taking place in the region'smunicipalities. Another aim of this work is to determine the growth tendency of the mentioned areas, taking into account the various public and private investments recently directed to the north expansion axis of Belo Horizonte Metropolitan Region.