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Earth Sciences Research Journal
versão impressa ISSN 1794-6190
Resumo
SEUTLOALI, Khoboso Elizabeth e BECKEDAHL, Heinrich Reinhard. A Review Of Road-Related Soil Erosion: An Assessment Of Causes, Evaluation Techniques And Available Control Measures. Earth Sci. Res. J. [online]. 2015, vol.19, n.1, pp.73-80. ISSN 1794-6190. https://doi.org/10.15446/esrj.v19n1.43841.
Road construction has increased significantly worldwide in the last decades to meet the demands of the increasing human population and this has led to serious soil erosion problems, the bulk of which is unaccounted for, especially in the developing world. For comprehensive land management decisions and monitoring strategies, a review of work that has been done to assess soil erosion due to roads is critical. This article, therefore, reviews the causes of road-related soil erosion, assessment methods and available control measures. Specifically, this work provides an overview of (i) the linkages between roads and soil erosion; (ii) measurement and prediction of road-related erosion; and (iii) erosion control and rehabilitation techniques. Literature shows that road construction results in hill-slope profile modification; removal of vegetation cover; as well as the formation of steep slopes that are prone to severe erosion. Furthermore, there is a variety of erosion control measures for controlling road-related erosion although no study has demonstrated the method that is cost efficient and operational across different landscapes. We are of the view that this study provides guidance in future research on road-related soil erosion across the developing world where sophisticated monitoring techniques are limited due to resource scarcity for assessing large areas.
Palavras-chave : Roadcut and fill embankments; road drainage structures; runoff; soil loss; measurement and prediction; revegetation.