Abstract
The article presents the results of a study of the content of pigments in the leaves of black poplar growing along the auto roads in Biysk. The increase in technogenic pollution contributes to the change in the amount and ratio of basic and additional pigments. Compared with the control, a significant decrease in the content of chlorophyll a and the ratio of chlorophyll a/b, a significant increase in the content of chlorophyll b and carotenoids were revealed.
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