Assessment of natural and environmental vulnerability in the municipality of Quixadá- Ce

Abstract

The analysis of natural and environmental vulnerability seeks to show the susceptibility of the environment, considering natural factors such as: soil, vegetation, geology and geomorphology, and their relationship with anthropic interference. Thus, the study aims to evaluate the natural and environmental vulnerability in the municipality of Quixadá, establishing degrees of stability in relation to morphogenesis and pedogenesis, also performing a comparative analysis between vulnerability and environmental sustainability through a geomorphological compartmentalization. The methodological procedures stem from a bibliographic survey, field work, identification of geoenvironmental units, production and cross-referencing of thematic maps. In the elaboration of the maps, the Geographic Information System, GIS ArcGis 10.5, was used. The identified geoenvironmental units received values ​​ranging from 1.0- to 3.0, with intervals of 0.5. The results showed that in the environments of sertaneja depression there is a low natural vulnerability, but it has been undergoing strong changes through human actions. In the case of the residual massif, river plains and inselbergs, these are areas that already have high natural vulnerability due to weathering, and human actions contribute to the worsening of this situation. In these environments that present high vulnerabilities, low environmental sustainability is observed.