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A bacia hidrografica do Vieira esta inserida no municipio de Montes Claros, no norte de Minas Gerais. O rio Vieira e um dos principais afluentes do Rio Verde Grande e este desagua no rio Sao Francisco. Essa bacia se destaca por drenar a area urbana de Montes Claros, logo, os problemas ambientais decorrentes da atividade urbana atingem diretamente o rio Vieira. O objetivo do trabalho foi compreender as transformacoes de uso do solo na bacia do rio Vieira, utilizando instrumentos geotecnologicos. Os dados dos sensores orbitais mostram que, entre 1989 e 2009, as mudancas mais importantes foram: a recuperacao de parte da cobertura vegetal original e o crescimento da area urbana de Montes Claros. Esta ultima mudanca trouxe problemas ambientais graves para a bacia do Vieira. No entanto, medidas, como o tratamento do esgoto esta sendo realizada, a fim de mitigar os impactos causados pelo crescimento da cidade. A criacao de unidades de conservacao foi outra acao que resultou em ganhos ambientais, como a regeneracao do Cerrado em espacos degradados. Palavras-Chave: Bacia hidrografica, uso do solo, sensoriamento remoto e SIG. Change of Land Use on River Basin Vieira, in Montes Claros/MG ABSTRACT The watershed of Vieira is inserted in the municipality of Montes Claros, in northern Minas Gerais. The river Vieira is one of the main tributaries of the Rio Verde Grande river and this flows into San Francisco. This basin is drained out for the urban area of Montes Claros. Thus, the environmental problems of urban activity directly affect the river Vieira. In this sense, this work used geo tools to understand the changes of land use in river basin Vieira. The data from orbital sensors show that between 1989 and 2009, the most important changes were part of the recovery of original vegetation cover and growth of the urban area of Montes Claros. This last change has brought serious environmental problems for the basin of Vieira. However, measures such as sewage treatment is being performed in order to mitigate the impacts caused by the growth of the city. The creation of protected areas was another action that resulted in environmental gains, as the regeneration of degraded areas in the Cerrado. Keywords: River basin, land use, remote sensing and GIS.

Mudança de Uso do Solo na Bacia do Rio Vieira, em Montes Claros/MG (Change of Land Use on River Basin Vieira, in Montes Claros/MG)