Fragilidade ambiental nos sistemas ambientais e sítios urbanos no vale do Rio Banabuiú - CE

Abstract

This paper addresses the problem of environmental degradation in the watershed of the Banabuiú River, in Ceará, Brazil. It aims to set the degree of environmental fragility (ROSS, 1994; SANTOS, 2011) of that area. The basic concepts are displayed in a systemic conception that is oriented to an integrative view of the landscape elements. The methodology is based on integrative studies (BERTRAND, 1971; TRICART, 1981; SOUZA, 2000; SOUZA and OLIVEIRA, 2011; SANTOS and SOUZA, 2014) and aims to establish a relation between physical and environmental variables and define the elements for the study of environmental systems. The methodological procedures adopted were based on Libault's (1971) postulate for geographical research. Through an integrated analysis, the approach adopted could verify the dynamics of environmental systems, with a variety of morphodynamic processes that dynamize the drainage basin area inserted in the semi-arid region of Ceará. The results show the importance of the application of different models of environmental fragility (potential and emergent). With the support of statistical analysis, it was possible to have an overview of the situation of the urban sites inserted in the drainage basin of the Banabuiú river.