Abstract
In this work, we identified the content of zinc, copper, lead, and cadmium in the leaves of plants, including Artemisia vulgaris kamtschatica, Betula ermanii, Calamagrostis canadensis and Salix udensis collected from the territories of Petropavlovsk-Kamchatsky in summer 2020. Comparative analysis of changes in the accumulation levels of heavy metals in species-indicators from the urban environment, such as A. vulgaris kamtschatica and S. udensis, collected from 2017 to 2020 was provided. In general, copper content in plants from the city varied slightly over the entire investigation period. Zinc accumulation in the plants of the herbaceous and woody layers increased in 2020. The opposite trend was recorded in the accumulation of lead and cadmium for species-indicators. Their content in the vegetation cover of the city decreased by half from 2017 to 2020. In 2020, the total heavy metals pollution of plants of the herbaceous layer was assessed as weak; in previous years, it corresponded to an average degree. A similar situation was recorded for the tree layer. In Petropavlovsk-Kamchatsky, one of the most polluted sites was “Bus terminal 10 km”.
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