Análise geoambiental dos bioindicadores de degradação e as técnicas de geoprocessamento: um estudo de caso.

Abstract

The environmental degradation in the river environment is directly associated with the types of use and management of existing resources in watersheds. In this perspective, it is essential to investigate the environmental conditions through the implementation of a geoenvironmental analysis of the area. The aim of this research was to investigate the existence of environmental degradation from biological indicators in a stretch from the Piranhas River. For so much, the materials and methods that supported this study were compartmentalized in phases and took place through theoretical and theoretic - conceptual, cartographic lift, field study for general knowledge of the area, photographic register and establishing parameters for establishing the degree of environmental vulnerability. The data analysis was based on georeferencing and vectorization method of spatial phenomena. Through this study the environmental points of vulnerability have been identified in the Piranhas River drainage basin, with the location of the main sources of degradation and the indication of the main consequences of the actions and practiced activities, which are excess organic matter present in the river channel, triggering erosion by the removal of riparian forest, water pollution by domestic sewage and in general the reduction in the quality and quantity of natural resources existing in the ecosystem as a whole, especially impacting on the capacity of the same. In conclusion that the various human activities practiced in this area exercise negative pressure on the environment and it becomes even more severe through the lack of environmental conscience of the population and the control of inefficiency and management of natural resources by competent governmental bodies are therefore important matrices for the existence of this problem.