INFLUENCE OF USE OF LAND IN THE WATER QUALITY OF AGRICULTURAL MICRO BASIN

• Autor(a) principal: Queiroz, Manoel Moisés Ferreira de
• Data de Publicação: 2010
• Outros Autores: Iost, Caroline, Gomes, Simone Damasceno, Boas, Márcio Antonio Vilas
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Verde de Agroecologia e Desenvolvimento Sustentavel
• Texto Completo: https://www.gvaa.com.br/revista/index.php/RVADS/article/view/407
• topic: Land occupation; Liquid discharge; Management of water resources; El uso del suelo; Flujo; Gestión de recursos hídricos; Ocupação do solo; Vazão; Gestão de recursos hídricos

The objective of this work was to evaluate the influence of land use in the water quality of the micro basin of river Mandarina micro basin, located in the city of Cascavel-PR. The liquid discharge and the physic-chemical parameters dissolved oxygen, electrical conductivity, pH, temperature of the water, turbidity, color, nitrate, nitrite, total nitrogen, total phosphorus was monitoring between the months January and August 2007 at the river's main. It was determined the curve-key of the liquid discharge and it showed satisfactory result as it was possible to see correlation between quota and liquid discharge. The results of physical and chemical analyses indicated a good water quality, because the parameters have not gone beyond the limits praised by Resolution 345/05 of CONAMA for rivers, Class 2, with the exception of dissolved oxygen in some collections was below 5 mg L-1, color and total phosphorus which also exceeded the limits stipulated. Agriculture is the predominant activity in the micro basin (88%) and water courses have about 79% of the area of riparian forest required by law. It is believed that the soil management in the area of agriculture with practices such as tillage and system of terraces, and the presence of riparian forest in rivers, influenced for the good water quality.