MUDANÇAS DOS USOS DA TERRA E AS ALTERAÇÕES NAS VAZÕES DO ALTO RIO CLARO - GO (change in the land use and the alterations in the outflow of the high Claro river - GO)
Abstract
O uso da terra no alto curso da bacia do rio Claro foi consideravelmente modificado a partir da década de 1970, com a utilização dos Latossolos em relevos planos e suave ondulados pela agricultura mecanizada de grãos. Para compreender a dinâmica de ocupação da bacia hidrográfica e seus reflexos na quantidade da água do rio Claro foram processados dados de uso da terra de 1963/67 e 2001, bem como dados físicos-ambientais por meio de ferramentas de geoprocessamento. Foram também utilizados, dados de vazão para verificar o comportamento hídrico do rio Claro. O comportamento das vazões indica ligeira queda dos volumes médios diários. São urgentes políticas e ações efetivas, governamentais e da sociedade, na busca de alternativas de uso do território que não sejam conflitantes com a capacidade de suporte dos ambientes e sejam, ao mesmo tempo, social e economicamente viáveis.
Palavras chave: Usos da terra, bacia hidrográfica, comportamento hídrico.
ABSTRACT
The soil use in the high course on the watershed of Claro River has been considerably modified since the 1970-decade with the usage of the Latosoil and the plane and gentle-undulated relief waved by the mechanized agriculture of grains. In order to understand the dynamics of the watershed occupation and its effects on the quantity in Claro River water data of soil usage was processed from 1963/67 and 2001, as well as, physical-environmental data through geoprocessing instruments, also, flow data were utilized to verify the hidric conduct of Claro River. The flow conduct shows brief decrease in the daily volumes. Political, governmental and society effective actions are urgent to seek the alternatives of territorial use which are not disagreeing with the supportive capacity of the environment and are at the same time societal and economic practicable.
Key words: Soil use, watershed, hidric conduct.
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