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- Title
Analysis of the vulnerability to the erosive process of the slopes: a case study in the City of Itaporanga D'Ajuda (SE).
- Authors
Tavares Lisboa, Fábio; de Barros, Glauber Vinicius Pinto; de Rezende Nascimento, Paulo Sérgio
- Abstract
Erosive processes are natural phenomena that occur on the earth's surface and the advancement of this exogenous geodynamics leads to soil loss and degradation. These undesirable effects are intensified by the disorderly occupation of the territory, especially in geological substrates naturally susceptible to erosion. The unconsolidated or poorly consolidated sediments of the Barreiras Group are unstable to erosion during rainy periods where the water flow in the drainage channels is intense. Thus, the objective of the present study was to analyze the vulnerability to erosive processes resulting from anthropic interventions on slopes whose rocky substrate belongs to the Barreiras Group in Itaporanga D'Ajuda Municipality of Sergipe State. The main procedures used were erosion pins and infiltometers techniques combined with fieldwork. It was found that the region is highly susceptible to erosion due to the diffuse and concentrated rainfall runoff, causing the partial removal of surface horizons and the emergence of medium to large erosion ravines. These features extend over a large urban area of Itaporanga D'Ajuda near BR-101, where the removal of the vegetation cover and the cutting of the slopes for the installation of urban roads generated slopes vulnerable to erosion. The conclusion is that these are areas of risk to the population living in the region and the risks can be reduced by revegetation, fencing and evacuation of vulnerable areas. These features extend over a large urban area of Itaporanga D'Ajuda near BR-101, where the removal of the vegetation cover and the cutting of the slopes for the installation of urban roads generated slopes vulnerable to erosion. The conclusion is that these are areas of risk to the population living in the region and the risks can be reduced by revegetation, fencing and evacuation of vulnerable areas. These features extend over a large urban area of Itaporanga D'Ajuda near BR-101, where the removal of the vegetation cover and the cutting of the slopes for the installation of urban roads generated slopes vulnerable to erosion. The conclusion is that these are areas of risk to the population living in the region and the risks can be reduced by revegetation, fencing and evacuation of vulnerable areas.
- Subjects
SERGIPE (Brazil); SOIL erosion; SURFACE of the earth; REVEGETATION; RUNOFF; SOIL degradation; HYDRAULICS
- Publication
Revista Ciência e Natura, 2020, Vol 42, p1
- ISSN
0100-8307
- Publication type
Article