ALTERA??ES DE PAISAGENS RIBEIRINHAS: O CASO DO RIO PARAMOPAMA, ESTADO DE SERGIPE

摘要

Os objetivos deste trabalho foram analisar as altera??es da paisagem promovidas pela eros?o marginal e verificar a eficácia da técnica de bioengenharia de solos na recupera??o das margens de um trecho do rio Paramopama, localizado no município de S?o Cristóv?o, estado de Sergipe. Para a avalia??o da altera??o da paisagem, classificada como de altíssimo, alto e baixo grau de antropiza??o, foram analisadas séries fotográficas compreendidas no período de 1998-2008. As espécies que se estabeleceram com maior ocorrência foram as pertencentes à família Poaceae. Dentre os fatores responsáveis pela altera??o da paisagem, destacaram-se a eros?o e a instala??o de dutos atravessando a calha do rio. No rio Paramopama, foram observados dois momentos distintos, um com altíssimo e outro com alto grau de antropiza??o. A técnica de bioengenharia de solos mostrou-se eficiente no que se refere à recupera??o da paisagem, além de prover condi??es para a recupera??o do ecossistema ribeirinho.Palavras-chave: Margens de cursos d′água; recupera??o de paisagem; antropiza??o.?AbstractRiverine landscape changes: case-study of Paramopama River, Sergipe State. This work aimed to analyze current changes caused by riverbank’s erosion, as well as to verify the effectiveness of soil bioengineering techniques on the landscape recovery applied to Paramopama River banks. In order to verify landscape’s changes, it analyzed a photographic set produced during the period of 1998-2008, which had been classified according to its degree of anthropization as very high, high and low degree. Species with higher occurrence were those belonging to botanic family of Gramineae. There were many factors to landscape change, erosion was the most important followed by disturbances caused by ducts installation across the river channel. At Paramopama River two different moments could be observed, firstly, a very high degree of anthropization followed by a high degree of anthropization. Soil bioengineering technique was efficient to landscape recovery, providing ecological conditions to ecosystem recovery.Keywords: Stream banks; landscape recovery; anthropization.