Analysis of natural and environmental vulnerabilities of Rio Doce Basin-RN
Analysis of natural and environmental vulnerabilities of Rio Doce Basin-RN
DOI:
https://doi.org/10.5016/geociencias.v40i02.15438Abstract
The Rio Doce-RN basin comes through a process of land cluttered, causing a series of negative environmental impacts. In this sense, aimed to generate natural and environmental vulnerability maps, from the vulnerabilities of the physical environment (Geology, Geomorphology, soils, climate, vegetation) and man-made (Use and coverage of the Earth) of the basin watershed of Rio Doce-RN. The natural and environmental vulnerability maps were drawn, with the methodological references from Crepani et al. (2001), Grigio (2003) and Oliveira (2011). The results showed that natural vulnerability presented an average of 2.1 (Stable/Moderately Vulnerable) and environmental vulnerability an average of 2.4 (Moderately Vulnerable). The characteristics of the physical environment of the basin show a tendency to vulnerability, regardless of human actions, since 344.97 km ² (86.96%) of the basin is above the average level, concentrating 229.66 km ² (57.89%) between 2.0 and 2.2 levels. Anthropogenic interference amid strongly impacts the basin, mainly in urban areas, cattle raising and mining, a total of 271.87 km ² (68.53%), mainly in the central-eastern portion of the basin. It is concluded that the basin is presented as a vulnerable area, mainly in the eastern portion, and your suggested detail studies aimed at your environmental sustainability.