Acer pseudoplAtAnus L., Acer plAtAnoides L. and BetulA pendulA Roth. as bioindicatoRs of uRban poLLution in sofia
نویسندگان
چکیده
Acer pseudoplatanus L., Acer platanoides L. and Betula pendula Roth. have been studied under the urban pollution in Sofia during 3 years period. The aim of the study was, by statistical multifactorial analysis, to assess the value changes in morphological parameters of species under air pollution and potential for species usage as bioindicators in observed regions. The statistical analysis includes 3 morphological parameters: linear growth of the annual twigs, number of leaves on these twigs and area of leaves. The variation of the parameters in specimens from the polluted areas compared to the control in the most of cases is of a statistical significance. As an indicator only for pollution could be used Betula pendula and as a specific one: Acer platanoides – in urban pollution, mainly of industrial type (Thermo-Electric Power Station) and Acer pseudoplatanus – in road traffic pollution in combination with drought. The linear growth of the annual twigs (Acer pseudoplatanus) as well as the linear growth of the annual twigs and leaf area (Acer platanoides, Betula pendula) have a priority as bioindicators of pollution in the studied regions.
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