Importância da preservação das matas ciliares do Rio São Francisco no município de Paulo Afonso – BA

Abstract

The São Francisco River is one of the most important in the country, it has a historical significance in the development of the Brazilian territory, reaching six states. Four states in the Northeast region and supplying 507 municipalities. As it is a perennial river, it allows water supply during all seasons of the year, especially in areas where the semiarid climate is predominant, making it an economic, social and cultural symbol. In recent decades its water potential has been declining due to environmental impacts in its adjacent areas; that have been taking place with the removal of riparian forest for the construction of houses, factories, businesses, and a disorderly urban expansion, generating one of the main factors of degradation. The objective of this work was to analyze the quantity and density of riparian forests, through a literature review, geoprocessing techniques and infrared satellite image analysis of the river's marginal perimeter in Paulo Afonso. The research showed that parts of the riparian forests are in a state of degradation; with exposed soils and fragmented vegetation. In need of restoration and preservation projects, combined with environmental awareness, especially in schools.