Extração de Areia em Cursos D`água: Impactos Ambientais no Leito Do Rio Piauí em São João do Piauí

Abstract

This study analyzes the environmental impacts caused by sand extraction in the municipality of São João do Piauí, 500km from the capital Teresina, to assess and significantly contribute to the perception of environmental impacts caused by this type of activity. Some areas of the country's economy showed significant development and civil construction enters this context of economic growth and this increase is due to the increase in supply and demand for natural resources. In civil construction, one of the main natural resources needed is sand. The sand extraction activity is of great relevance for socioeconomic development, however, it also causes numerous negative environmental impacts, such as soil erosion, siltation of the river bed, deforestation of riparian vegetation, changes in flora and fauna of the region, landscape transformation, release of chemical oils (diesel oil) into the atmosphere. The methodology used in this study was carried out through visits to the affected area, with a view to detecting, recording and analyzing the environmental impacts caused by

sand extraction, as well as bibliographical research to better substantiate the proposed objectives. The results obtained through the visits carried out in the explored areas made it possible to detect numerous negative impacts and some positive ones, such as the generation of employment and income and the raising of taxes. The main conclusion from this study is that the extraction activity is necessary, but as long as it is sustainable and that it respects the legislation.