Influência do uso e manejo na compactação do solo como indicadores da recarga das águas subterrâneas em uma bacia hidrográfica em área de afloramento do Sistema Aquífero Guarani (SAG)

• Autor(a) principal: Paes, Claudiane Otilia [UNESP]
• Data de Publicação: 2012
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155040; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2018-08-03/000694967.pdf
• topic: Geologia - Métodos estatísticos; Mapeamento do solo; Solos - Compactação

Land use and land cover by agricultural systems exerts strong pressure on the availability of surface and groundwater resources. In aquifers recharge areas the soil water infiltration in depth is essential for water demand does not overstep the availability. The aim of work was verify how land use andcover by agriculture changes physical and hydraulic soil properties in the Ribeirão da Onça watershed, Brotas/SP-Brazil, located in recharge area of the Guarani Aquifer System (GAS). Through soil compaction measurements, was tried to establish relationships between of sugar cane, eucalyptus, citrus and pasture crops with the recharge system in the area.Using geostatistics techniques, a geographical analysis was performed, creating maps that represent the places with higher and lower levels of compactation. The sampling procedure showed a high variability in the measured data: maximum and mean compactation and compactation depth. In general the area presents critical levels of soil compactation, mostly in sugar cane and crops whichpresented the higher compactation values. The areas with higher compactation values had the lower water table oscillations, indicating less groundwater recharge. The information generated can help land use planning and decision making in the water management processes in the watershed, and the sustainable use of groundwater resources.