摘要
The research aimed to apply phytoindication for controlling air pollution with chlorine and lead in Yerevan. The research was performed between 2005 and 2008.5 arboreous species were studied： Robinia pseudoacacia L., Fraxinus excelsior L., Populus alba L., Morus alba L. and Uitis vinifera L.. The research showed that arboreous plants growing in the city accumulate chlorine and lead. Chlorine concentrations in all 5 species varied from 0.50% to 1.77%, and the maximum value was found in Robiniapseudoacacia L., exceeding the control by 3.6 times. As for the level of lead in plants, the concentration varied between 1.64-7.65 mg/kg, and the maximum rate exceeds the background （2.0 mg/kg） by 3.8 times. The authors produced a schematic map of chlorine distribution all over the city, territory, and detected the most polluted zones. According to the data the autbtors collected, only 3 of 5 studied species displayed high intake rate and tolerance to lead and chlorine pollution： Robinia pseudoacacia L.. Fraxinus excelsior L. and Populus alba L. Thus, the authors advise these species for planting in Yerevan. The results of this research were used by the Municipality of Yerevan for functional tree planting in the city.
