The Influence of Harmful Substances on the Pigments of Leaves of Decorative Trees

Republic of Uzbekistan the composition of the atmospheric air on the main streets, the level of traffic on these streets, the selection of resistant species of phenol trees for growing ornamental trees, and the laws of changing the amount of pigments in these trees depending on the streets and season. At the same time, the types of ornamental trees and their resistance to pollution from the pollution of carbon dioxide, nitrogen oxides and sulfur dioxide are mainly represented by atmospheric air pollution.