Zoneamento ambiental da bacia hidrográfica do Alto São Francisco-MG

Abstract

The dissertation proposes an environmental zoning of the river basin, adopting as a study area the perimeter known as the Upper São Francisco Hydrographic Basin, which is located in the southwestern region of the state of Minas Gerais, encompassing territorial areas of the municipalities of São Roque de Minas, Vargem Bonita and Piumhi. It also provides an approach to zoning and the two commonly used methodologies. The applied methodology follows the guidelines proposed by Crepani et al. (2001) and determines for the area units that are classified according to their environmental stability / vulnerability. Starting from these units, the thematic crossing in the platform ArcGis 10.2 was realized, where it was possible to realize the zoning of the area. In the watershed zoning, two units were defined as areas of legal impediment (following the standards required by the Forest Code), are areas that preserve or must be preserved or that restrict anthropic occupation, such as the permanent preservation areas - APP and National Parks (Conservation Units), and the second unit denominated as consolidated productive area. When analyzing the zoning map it is highlighted that a considerable part of the basin is in (approximately 44%) presents some legal restriction for the antropic use and in relation to the consolidated productive areas are classified five units where: In the vicinity of the Serra da Canastra PARna, the moderately stable unit comprises a larger percentage within the basin, while the unit is moderately stable. It is spaced but has a higher concentration near the main river bed (São Francisco River), so does the moderately vulnerable unit, and ending the vulnerable unit is present in the basin but with insignificant area.