The purpose of the study was to study the impact of ornamental trees on the central streets of Andijan on harmful substances in the atmosphereIt was found that the content of copper, cadmium, zinc and lead in the air and soil of the four streets and the city park has changed over the years.One of the indicators of soil contamination with heavy metals is the development of industry and high traffic, the total number of vehicles and fuel types depending on the length of the streets, the types of resistant ornamental trees growing along city roads and other factors. The results of the analysis of the soils showed that the differences in the content of copper, cadmium, zinc, lead in different levels are reliable. Permissible levels of contamination in soils are copper 3.0 mg / kg, antimony 32 mg / kg, zinc 23 mg / kg, and lead 32 mg / kg. forms

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