Vital, Saulo Roberto de OliveiraSantos, Ana Célia Fidelis dos2024-08-152024-08-152023-10-20SANTOS, Ana Célia Fidelis dos. Morfodinâmica do alto curso da bacia hidrográfica do rio Curimataú, Paraíba: uso e ocupação do solo e sua influência sobre os processos erosivos. Orientador: Dr. Saulo Roberto de Oliveira Vital. 2023. 132f. Dissertação (Mestrado em Geografia - Ceres) - Centro de Ensino Superior do Seridó, Universidade Federal do Rio Grande do Norte, Natal, 2023.https://repositorio.ufrn.br/handle/123456789/59280The dynamics of the processes operating in the semi-arid relief have erosion as an important component. However, currently, this natural phenomenon has been drastically accelerated by human action. Land use and coverage that evolves in a poorly planned way can generate high amounts of soil loss and clogging of rivers and natural and artificial reservoirs. This research aims to analyze the dynamics of erosion processes in the upper reaches of the Curimataú River basin, based on three attributes: susceptibility to erosion, land use and cover and their impacts on accelerated erosion, and monitoring of soil loss from of experimental stations. To prepare erosion susceptibility maps, the following variables were used: erosivity, erodibility, geology, slope and land use and cover, using the map algebra technique in the Qgis 3.14 software. To carry out land use and cover mapping, an image from the Sentinel 2-A satellite was used, based on vectorization based on photointerpretation techniques. The experimental stations for monitoring soil loss were based on the technique proposed by Baldassarani and Girão (2018), which estimates soil loss from surface lowering, measured using erosion pins. The susceptibility maps showed that the human activities established in the basin are causing the accelerated erosion process due to human actions established in the natural environment. Land use and cover mapping identified that the elements that most contribute to the intensification of erosion correspond to uncovered areas and agriculture, as they promote the excessive removal of native vegetation. Finally, the soil loss observed in the area was around one ton per hectare per year and tributaries of the basin and even the main river are already suffering environmental imbalance resulting from the production of excess sediment, caused by accelerated erosion. In view of this, it was possible to conclude that the inadequate use and management of soil in the basin resulted in large extensions of uncovered areas resulting from deforestation, and that consequently the accelerated erosion process acts intensely, causing soil loss and sediment production, as well as causing erosion features present in the landscape.Acesso AbertoErosãoUso e cobertura da terraPerda do solomasterThesisCNPQ::CIENCIAS HUMANAS::GEOGRAFIA