Surrey on quality effect of irrigation on Soil and dominant rangeland Specieo (Hordeum morinum) in Industrial City Alborz of Gazvin region

As average annual precipitation in Iran is less than global, all of the water in hydrological cycle must be used.In this way we must consider all parts of urban and industrial waste water.Lands located in downward of refinery of industrial city of Alborz were subject of this research.As lands are in use for grazing of sheeps and as they are contaminated by waste water, so these lands have more importance than others.Subject of this project is effects of irrigation by industrial waste water on plants and soil of the region.To do this research,enough numbers of soil and plant samples were gathered and be moved to the lab,and then concentration of heavy metals were measured.Results were studied by SPSS soft ware from statistical point of view.Results showed that absorbed heavy metals in plant bodies, soil and water were more than its standard levels.Therefore there are a lot of worries about soil,plants and human health of that region so proper answers must be found for this problem.