THE ACCUMULATION OF AVAILABLE FORMS OF Cu AND Pb IN SOIL OF DECIDUOUS AND CONIFEROUS FORESTS

Samples of soil were taken from deciduous and coniferous forests situated near Olsztyn by main road no. 51. They were taken at four distances from forest margin (0 - forest edge, 10, 20 and 30 m) also from depth of 0 divided by 10, 10 divided by 20 and 20 divided by 40 cm. The aim of the experiment was indication of available forms of Cu and Pb in forest soils subjected to influence of intensive motor transport. Most available copper in 1 mol HCl.dm(-3) was in soil from deciduous forest taken from 10 m away from forest boundary and lead in soil from the edge of coniferous forest, that is the nearest from the road. Based on conducted experiment it was found that insignificantly higher accumulation of available forms of Cu and Pb was in soil from deciduous forest in comparison with soil taken from coniferous forest. The content of copper in deciduous forest soil reduced much clearer in conjunction with depth than in soil from coniferous forest. With reference to lead, was found conversely and less stronger tendency.