Determinação de regiões homogêneas do Estado de Alagoas através da análise espacial da morfometria das bacias hidrográficas

Abstract

The regionalization of area in geography is linked directly to economic and health data, where conglomerates are defined for a better implementation of targeted public policies. The grouping of hydrographic basins is a practice applied in Brazil for better management of water resources. It is usually based solely on the neighborhood aspect, which makes regionalization merely become grounded in political definitions. The morphometric parameters extracted from satellite images for the characterization of hydrographic basins are usually used for the determination of their hydric capacities. The present study aimed to define a regionalization of Alagoas state based on morphometric similarity of the river basins, using Geotechnologies. The theoretical and methodological basis consisted in concepts of Christofoletti (1980) and Tucci (1998) for the determination of tabulated and thus processed parameters. The spatial data were rganized in a database and implemented in a Geographic Information System (GIS), using the software TerraView's Skater method to perform regionalization based on the boundaries of the basins (dividers Topographic) that must be contiguous and in possible similarities in the parameters of shape, drainage and relief. The results indicate an aggregation of homogeneous hydrographic basins defined based on the parameter average elevation of the land, thus presenting a new proposal for the regionalization of the state of Alagoas, allowing a more effective division and serving as a tool for appropriate physical-territorial planning with the application of conservationist practices.