Mapeamento da vulnerabilidade geoambiental do estado do Paraná

Abstract

The geo-environmental vulnerability mapping of Parana State, elaborated at the 1:600.000 scale, was based on the “Analise Empirica da Fragilidade dos Ambientes Naturais e Antropizados” method presented by Ross (1994). For attainment of the vulnerability classes, geology, geomorphology and pedology were considered in three classes, low, moderate and high, applied on fifty geomorphologic units defined in Parana state by Oka-Fiori et al. (2006) and Santos et al. (2006). The vulnerability classes are characterized by a variety of geo-environmental processes: erosion, movements of mass, fall of blocks, soil subsidence, ground collapses, periodic flooding and undergroundwater contamination. The expected problems and the aptitude of use for each unit were identified. The integration between the various spatial informations was carried out trough geo-processing techniques, having applied numerical combinations and operators of weighed addition in matrices and using Arcview 3,2, Spatial Analyst and 3D Analyst softwares. The result of the work aims at to take care of the demand for a systematic base to environmental action planning in Parana state.