LINEAR EROSIONS IN THE PERNAMBUCO SEMIARID: EVALUATION OF A MICROSCALE EROSIVE PLOT IN THE SAN FRANCISCAN DEPRESSION

• Autor(a) principal: Xavier, Joaquim Pedro de Santana
• Data de Publicação: 2020
• Outros Autores: Coutinho , Edilson Amaral Tavares, Tavares, Kaio César de Oliveira, Silva, Danielle Gomes da, Listo, Fabrizio de Luiz Rosito
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Geociências do Nordeste
• Texto Completo: https://periodicos.ufrn.br/revistadoregne/article/view/19303

Studies on erosive processes in semi-arid environments are still quite scarce in the geomorphological literature, especially, those related to linear erosion. The objective of this work was to select a representative part of the environmental group of the municipality of Belém do São Francisco, Pernambuco semi-arid, to detail the role played by the elements of the natural context on the erosion of erosion processes. For this, we performed a microscale mapping in a 30mX60m plot, through the analysis of different conditioning factors in a descriptive field form. The results pointed out that the systemic interaction of the conditioning factors promotes erosion with wider and longer elongated geometries, compared with erosive processes common in wetlands. It has also been found that linear erosion in these environments often occurs when laminar erosion has already severely degraded the soil, providing a micro-topography that favors the flow of well-developed linear erosions.