Made available in DSpace on 2014-12-17T15:03:22Z (GMT). No. of bitstreams: 1 LucianaCO_com restricoes.pdf: 2198799 bytes, checksum: a7b68803faefc2b5098107e277f62f8a (MD5) Previous issue date: 2009-02-18 / Environmental impacts are defined as the processes of social and ecological changes caused by nuisance ambient. In agriculture are diverse, and the intensive use of land and inappropriate agricultural practices causes negative effect on the environment besides affecting crop productivity and quality of life of man. So this study was objective to analyze parameters indicators of environmental impacts in the Cruzeta the Discrict Irrigation. During the period July 2007 to March 2008 samples were collected in lot 01 and 02 of the irrigation district. The monitoring was conducted in four sampling points, three (3) located in the irrigation channels and 1 (one) located in a cacimb?o. Were monitored pH, CE, STD, SS, NO3-, OD, DT, PST, RAS, CT, Ca+2, Mg+2, Na+ and K+ and heavy metals. Analysis was performed, soil fertility, determining the infiltration rate, moisture content of soil and flow measurement. The results showed that the parameters considered most effective in evaluating the indicators of environmental impacts were: Suspended solid, turbidity, dissolved oxygen and Coliform termotelerantes. The concentrations of nitrate were below the limit established by CONAMA (2005). High levels of STD were found in the point P4. The risk of salinity in cacimb?o Lot 02, the water was classified as Class II, or medium risk of salinity in the remaining points was classified as Class I. The iron and aluminum were found high concentrations in four sampling points independent of the dry or rainy. On the ground, found high levels of phosphorus in both samples collected in the batch 01, as the lot 02. The pH levels found in samples of soil, the soil can be classified as neutral and moderate alkalinity. The high infiltration rate obtained in the tests performed in lots 01 and 02 indicated the high permeability of soil at these points / Impactos ambientais s?o definidos como os processos de mudan?as sociais e ecol?gicas causados por perturba??es no ambiente. Na agricultura s?o bastante diversificados, sendo que o uso intensivo do solo e de pr?ticas agr?colas inadequadas causa efeito negativo no meio ambiente, alem de afetar a produtividade das culturas e a qualidade de vida do homem. Diante disso, este trabalho teve por objetivo analisar par?metros indicadores de impactos ambientais no per?metro Irrigado Cruzeta. Durante o per?odo de julho de 2007 a mar?o de 2008 foram coletadas amostras no lote 01 e 02 do per?metro irrigado. O monitoramento foi realizado em quatro pontos de amostragem, sendo 3 (tr?s) localizados nos canais de irriga??o e 1 (um) localizado em um cacimb?o. Foram monitorados pH, CE, STD, SS, NO3 -, OD, DT, PST, RAS, CT, Ca+2, Mg,+2, Na+ e K+ e metais pesados. Foram realizadas an?lises de fertilidade do solo, determina??o da taxa infiltra??o, teor de umidade do solo e medi??o da vaz?o. Os resultados alcan?ados permitiram concluir que os par?metros analisados mais eficazes na avalia??o dos indicadores de impactos ambientais foram: SS, Turbidez; CT e oxig?nio dissolvido. As concentra??es de Nitrato ficaram bem abaixo do limite estabelecido pelo CONAMA (2005). Altos teores de STD foram encontrados no ponto P4. Quanto ao risco de salinidade, no cacimb?o do lote 02, a ?gua foi classificada como de classe II, ou seja, de m?dio risco de salinidade, nos demais pontos foi classificada como de classe I. Quanto ao ferro e alum?nio foram verificadas altas concentra??es nos quatro pontos de amostragem independente do per?odo seco ou chuvoso. No solo, foram encontrados altos teores de f?sforo tanto nas amostras coletadas no lote 01, quanto no lote 02. Os teores obtidos de pH nas amostras de solo, permitiram classificar os solos como neutro e de alcalinidade moderada. A alta taxa de infiltra??o obtida nos ensaios realizados nos lotes 01 e 02 indicou a alta permeabilidade do solo nestes pontos