Desenvolvimento de metodologia em SIG para zoneamento ecológico : estudo de caso da Bacia do Ribeirão do Gama - DF

Abstract

Este trabalho tem como objetivo delimitar e quantificar as áreas de preservação permanente contempladas pela legislação federal em uma bacia hidrográfica do Bacia do Ribeirão do Gama que compreende tanto ambientes de Cerrado preservado quanto áreas urbanizadas e de produção agrícola. ______________________________________________________________________________________ ABSTRACT

The permanent preservation areas were created to protect the environment, decreasing processes as erosion often caused by anthropic interferences. The Brasilian Forest Law stablished criteria to the delimitation of these areas. An area zoning presents special areas where permanent preservation areas are included. This way, un the present paper was performed the mapping of the permanent preservation areas in order to accomplish the future zoning of the watershed called Basin of stream of Gama. According to the Federal Law, permanent preservation areas on this watershed were found along rivers margins preservation areas on this watershed were found along rivers margins and their streams and plateau's edges. The mapping of the watershed, generation of distance map along rivers margins, generation of the Digital Elevation Model, generation of slope's map and re-classification of this map. As a result it was obtained that the permanent preservation areas represented 6% of the watershed.