Investigation the Effect of Irrigation With Municipal Waste Water on Accumulation of Some Pollutants And Chemicals Elements in Plant And Its Effect on their Ecological Characteristics (A Case Study: Eucalyptus Globulus)

The use of waste water in the agriculture may reduce the pollution of soil and water resources, preserves the hydric resources and increase availability of nutritious and water for plants. Trees can convert some harmful pollutants to non-harmful material via absorption, accumulation in aerial organ, respiration and photosynthesis. The main aim of this study was to investigate the effect of irrigation with municipal waste water on accumulation of some pollutants material in trees and its effect on their ecological characteristics. This study was carried out in two planted Eucalyptus globulus site in Hesarsorkh- plain dry around Qom: irrigated with treated wastewater and irrigated with well water. In each site, frequency, density and canopy cover of trees have been studied in 10 random sampling plots of 10 10 meters. The richness, diversity and uniformity of the plants was also calculated. Chemical properties of trees (sodium, potassium, calcium and phosphorus) were measured by flame photometer. The data were analyzed in a factorial design with Duncan . According to results, the percentage of canopy cover was increased, whereas richness species was decreased in the area irrigated with waste water. No significant effect was observed on biodiversity of plants. Phosphorus, potassium and sodium, were increased significantly in tree planted in the area irrigated with waste water compared to control area (P