EN
Acidification and buffer capacity of bark in five deciduous Mediterranean plants were analyzed. The material originated from six stands with different levels of hovered dust, chiefly cement particles; its pH values were in general higher as compared with some other areas in Europe and Croatia. Quantitative data indicate a tendency of acidity to decrease in stands polluted with more than 200 µg/cm3 of hovered dust. Buffer capacities as a rule were higher against alkali and in particular species were ranging contrary to the range of ph values. The results are interpreted in favour of alkaline atmosphere influence.