SIMWE model application on susceptibility analysis to bank gully erosion in Alto Douro Wine Region agricultural terraces

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Fernandes, J (Autor) Outra; Bateira, C (Autor) Outra; Soares, L (Autor) Outra; Faria, A (Autor) Outra; Oliveira, A (Autor) Outra; Hermenegildo, C (Autor) Outra; Moura, R (Autor) FCUP; Jose A Goncalves (Autor) FCUP

Revista

Título: Catena

Vol. 153

Páginas: 39-49

ISSN: 0341-8162

Editora: Elsevier

Indexação

ISI Web of Knowledge - 18 Citações

Scopus - 20 Citações

Outras Informações

ID Authenticus: P-00M-F7K

DOI: 10.1016/j.catena.2017.01.034

Abstract (EN): This paper focuses on the susceptibility evaluation to bank gullies on earthen embankments through the application of SIMWE (SIMulated Water Erosion) model, using a high resolution digital elevation model (1 meter spatial resolution). The results provided by the model are compared with the hydrologic characteristics, soil texture and soil structure of the agricultural terraces. This approach demonstrates an association between the spatial distribution of erosive forms with high values of water depth and reduced water discharge that are consistent with the lower values of electrical resistivity. The areas with the highest percentage of erosive forms, related to sediment flux, transport capacity and sediment concentration susceptibility, assume medium values. These figures, combined with a low hydraulic conductivity and soil infiltration capacity, are consistent with the fine texture of soils, allowing increased runoff and the development of linear erosion.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11