Solo como fonte difusa de contaminação em minas de scheelita no semiárido Tropical

• Autor(a) principal: Medeiros, Ana Cláudia Leite de
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/36993
• topic: Mineração. Metais pesados. EUPS. Perda de solo.

Anthropogenic activities are the main accelerating agents of erosive processes, resulting in the disintegration of soil particles, transport and deposition through the action of raindrops and surface runoff. Among these activities, we highlight mining, considering the main source of mineral resources essential for socioeconomic development, anthropogenic source of heavy metal, causing changes in soil quality. The lack of sanitary and environmental protection measures contributes to the risk of degradation in all areas of mining influence. In Rio Grande do Norte mineral extraction began in 1940, in the municipality of Currais Novos, semi-arid region. In this sense, the objective of this work was to estimate the loss of soils and contaminants by erosion in the areas of Scheelite mining in the Barra Verde and Olho d'Água mines. The native forest was used as a reference quality standard. Loss of nutrients: P, NT, MO, heavy metals: Cd, Pb, Cu and physical attributes: sand, silt and clay were generated in the study “Atributos físicos e químicos de áreas degradadas pela mineração de scheelita na região tropical semiárida” database. In order to determine soil loss in the mining area, the Universal Soil Loss Equation was used rain erosivity, soil erodibility, slope length, slope, soil use, management and conservation practices complementary. The study of soil loss becomes fundamental, since the anticipated knowledge of the erosion potential can direct the human activity, facilitating the establishment of environmental monitoring programs of the area in recovery. The loss of physical and chemical attributes of the soil in the study areas when compared to the native forest reduces the soil quality in the mining areas, which compromises the development of native vegetation and the recovery of the area. Accelerate the process of stabilizing the area and restoring the local ecosystem.