Monitoring zanieczyszczenia metalami śladowymi drzewostanów świerkowych Beskidu Śląskiego i Żywieckiego

In recent years the condition of spruce stands in Beskid Śląski and Żywiecki (S Poland) has decreased drastically. This process consists of many factors. One of them is intense anthropopressure, therefore monitoring of forest pollution is extremely important. An analysis of four chosen trace elements (Cd, Pb, Cu and Zn) in soil and bark of Norway spruce from 7 locations in Beskid Śląski and Żywiecki was conducted. Tree bark was considered as a very good bioindicator of environmental gaseous and dust pollution. The concentrations of investigated elements in the material did not exceed the physiological concentrations, only in the bark of spruce trees from Beskid Żywiecki elevated levels of cadmium (2 mg/kg d.w.) were measured.