G. Nersisyan, H. Hovhannisyan;                             Electronic Journal of Natural Sciences of NAS RA, Ecology, 1 (22),                             2014,                                                         pp. 33-38;                                                     
The article highlights a study of the impact of man-made pollution upon arboreous plants in conditions of Yerevan. The research included investigation of chlorine and heavy metal concentrations in the city’s soils and plants, assessment of the level and spatial spread of plant pollution, investigation of cumulative properties of plants and the effect of toxicants on some physiological and biochemical indices of plants. Criteria for indication of ecological tolerance of plants were set up, as well.
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