DEGRADAÇÃO AMBIENTAL EM GILBUÉS, PIAUÍ (environmental degradation at gilbués, Piauí state)
Abstract
Este artigo tem como objetivo fornecer uma panorâmica acerca das condições ambientais e socioeconômicas da região de Gilbués, no sudoeste piauiense. Considerado oficialmente como um ";;núcleo de desertificação";;, Gilbués, apresenta intensa degradação dos seus solos, decorrente principalmente, da forte erosividade das chuvas locais e da erodibilidade de seus solos. Do ponto de vista climático diferencia-se da região semi-árida, por apresentar valores de índice de aridez e variabilidade interanual das chuvas inferiores aqueles da região semi-árida. Área de intensa morfogênese natural tem, historicamente, a pecuária extensiva como principal atividade econômica, associada à mineração de artesanal de diamante, ambas desenvolvida de forma predatória. Espera-se que as informações aqui apresentadas possam subsidiar futuras pesquisas na região.
Palavras chave: Degradação ambiental, desertificação, Gilbués, Piauí.
ABSTRACT
This paper has as main subject to present an overview on environmental, social and economic conditions of Gilbués, a State of Paiuí southeast region. Officially recognized as a ";;núcleo de desertificação";;, (desertification nucleous) this area shows severe soil degradation, caused by the sum of rain erosivity and soil erodibility. From a climatic point of view two main factors differentiate Gilbues and semi arid regions: the values of the aridity index, and the values of the inter annual rain variability index are both significatively lower than the ones of the semi arid regions. Besides intense natural morphogenesis the Gilbulés area presents predatory forms of traditional cattle raising and diamond mining activities. We hope the information presented here could subsidises future scientific research on Gilbues region.
Key words: Environmental degradation;desertification; Gilbués, Piauí.
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