Análise da vulnerabilidade à erosão da microbacia hidrográfica do Maxixe no Alto Sertão de Alagoas

Abstract

Soil erosion can be monitored, analyzed and understood at various scales; one of them is the hydrographic basin (GUERRA, MENDONÇA, 2007), this work has as object of study the Microhydrographic basin of the Maxixe, located in the high sertao of alagoas and the main objective is to analyze the environmental vulnerability to the erosion of the Hydrographic Basin of the Maxixe in the upper Sertão of Alagoas, using the GIS. SIGs can now favor and contribute to the planning and support of tasks that address a complete information framework (LANG, S .; BLASCHKE, T. 2009). In the understanding and understanding of the aspects worked in a river basin, the aid of the GIS becomes a fundamental tool of spatial analysis of the basin, especially the erosive processes in it. Erosion or glyptogenesis is a natural phenomenon, through which the earth's surface is worn and fanned by physical, chemical and biological processes that shape the landscape (SUGUIO, 2003). In order to identify erosion processes and to propose a map of vulnerability to erosion, Crepani (1996; 2001) methodology was used, he proposed the method of "map algebra" in which an arithmetic mean of five maps in the final map and in the result of this research.