In the study the impact of the branch extracting brown coal in Borodino and Itatskoye fields of Kansk and Achinsk coal basins on the condition of stability of development of silver birch was consid-ered. It was noted that in Borodino and Itatskoye fields the coal was extracted in the open way there- fore these fields destroy natural landscapes, lead-ing to negative ecological consequences: chemical, statial-destructive, radiation pollution. For the as-sessment of influence of Borodino and Itatskoye fields the fluctuating asymmetry of sheet plates of silver birch was investigated. Collecting plant mate-rial was carried out in 2016 in the radius of 200 m from industrial complexes of Borodino coal mine. The characteristic of the level of fluctuating asym-metry of silver birch as by means of traditional, and rated indicators of asymmetry was given. Essential violations in the development of silver birch, grow-ing near coal mines of the village Itatsky which was shown in the greatest value of traditional integrated indicator of the fluctuating asymmetry in compari-son with traditional integrated indicator of fluctuat-ing asymmetry of leaf plates of silver birch, growing close to Borodino coal mine were revealed. Similar difference between the plants growing near coal mines "Itatsky", "Borodino" was also revealed at application of rated integrated index of the fluctuat-ing asymmetry. It was shown that morphological feature, most sensitive to environmental pollution, was the distance between the bases of the first and second veins of the second order of leaf plates of silver birch. Thus, the bioindication method by means of traditional and rated integrated indexes of fluctuating asymmetry of leaf plates of silver birch allowed to reveal different extent of violation of sta-bility of development depending on the features of habitat, an anthropogenous press.
bioindication, pollution, asymmetry, developmental stability, silver birch
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