GEOMORPHOLOGIC HABITATS DELIMITATION ON REGION MORRO DO CHAPÉU OF STATE PARK

Abstract

The PEMC is located in Bahia’s semi-arid region above a sediment plateau which reaches heights of 1000m. In this work, it was estabilished a methodology to morphological survey of the area and the mapping of the geomorphological habitats. In order to do this, it was used LANDSAT ETM+ scene clippings and Quickbird scene; and the MDT/SRTM-NASA, to the maps generation. The NDVI aimed vegetation density data, revealing itself very meaningful, most of all because it’s an area which presents strong semi-aridity, where during the dry season, occurs leaf biomass loss. The microbasins’s survey has identified the surfaces which have got a great level of rugosity which along with the other morphometric parameters, aimed the grade of relief’s dissection and the environmental isolation’s levels. This premise is supported on the fact that the fragmentation enlarges the complexity and the environmental heterogeneity levels. The results aimed the dissected pediplanos of the Morro do Chapéu’s formation as the most important habitat. It reaches the Isabel Dias and Carnaíbas, where predominates grotão woods, riparian forest and cave complexes, and the caatinga in the soils spots, which are a mosaic of plants formations with strong grade of primitivity, derived from environmental isolation produced by the relief’s fragmentation.