Accelerated erosion in a watershed in the southeastern region of Brazil

Dorici, Mariana; Costa, Carlos Wilmer; Prado de Moraes, Mayra Cristina; Piga, Fabiola Geovanna; Lorandi, Reinaldo; Lollo, Jose Augusto de [UNESP]; Moschini, Luiz Eduardo

Accelerated erosion in a watershed in the southeastern region of Brazil

Arquivos

WOS000385135100003.pdf (4.32 MB)

Data

2016-10-01

Autores

Dorici, Mariana

Costa, Carlos Wilmer

Prado de Moraes, Mayra Cristina

Piga, Fabiola Geovanna

Lorandi, Reinaldo

Lollo, Jose Augusto de

Moschini, Luiz Eduardo

Editor

Springer

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

An understanding of erosive processes and the washing away of sediments to watersheds is an essential tool for decision makers planning water resource use. This study assessed the potential for surface runoff due to natural attributes together with land use/land cover to highlight the potential for accelerated erosion in the Araras River Watershed (352.77 km(2)) at a 1: 50,000 scale. The analytic hierarchy process was used with the data provided to combine geoenvironmental attributes (soil, rock, water, relief and land use/land cover) that trigger erosive processes. Just over 51 % of the basin area presented an average potential for surface runoff, while 76.5 % presented a low to average potential for accelerated erosion. Despite this, upstream areas used for water collection for Araras city show a medium to high potential for surface runoff and accelerated erosion, reducing water infiltration and recharge, and resulting in the silting of reservoirs and water quality damage.