Impactos e vulnerabilidades socioambientais no trecho urbano do Rio Barra Nova, Caicó/RN

Abstract

Urban rivers in Brazil are no longer associated with pleasant environments, habitat for the subsistence of countless species of local fauna and flora, in addition to a pleasant environment for the society that uses and occupies its banks, gradually becoming synonymous with degradation, pollution, impacts adverse socio-environmental. The rapid and disorderly process of city growth has produced socio-environmental vulnerabilities in river channels. These spaces become an alternative housing for low-income families, however, the indiscriminate use and occupation corroborates and intensifies the process of deforestation of riparian forest, pollution of channels, contamination of water, degradation and silting of urban river environments. Thus, it was defined as the main objective of this master's thesis, to analyze the environmental problem, from the perspective of indicators of socio-environmental vulnerabilities present in the urban section of the Barra Nova river, located in the city of Caicó/RN. The methodology employed used aerial photography techniques, field activity and laboratory analysis, using the DPSIR model - Driving Forces, Pressure, State, Impact, Response. The mapping of forty-seven (47) analysis collection points was generated in the urban stretch of the Barra Nova river, with the classification of nineteen (19) indicators distributed among the five (05) DPSIR classes. It is concluded that the intense urban occupation of the urban section of the river, enhances the process of degradation, pollution and silting of the river channel, directly affecting the balance in the aquatic ecosystem and habitat of biodiversity, in addition to reducing the quality of life of riverside families subsist amid adverse impacts on the environment