In the course of the study increased concentrations of the analysed elements, i.e. zinc, nickel, chromium, cadmium, manganese, iron, copper and lead, in the investigated road surfaces made from granulated blast furnace slag and furnace slag were observed. The levels of concentrations of these metals in the pavements affected their contents in the ground, groundwater, as well as the needles and leaves of trees growing in the vicinity of the investigated sections of the roads. The analyses did not indicate the effect of the concentrations of metals in the assimilatory organs of trees on their health state determined on the basis of visual assessment of arborescent vegetation morphology. The highest concentrations of the analysed elements were detected in the pavement made from granulated blast furnace slag, a material not recommended for forest road surfaces without having a prior chemical analysis conducted on its composition.

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