CONTENT OF 16 HEAVY-METALS AND OTHER ELEMENTS IN SPRUCE NEEDLES (1-4 YEARS OLD) FROM 23 SITES OF THE CZECH-REPUBLIC

Sixteen heavy metals and other elements - K, Ca, Na, Mg, Cd, Hg, Pb, F e, Co, Ni, Sb, As, Al, Cu, Zn and Mn - were studied in the west part o f the Czech Republic on shoots one year acid four years old. Low diffe rences in current year needles between the sites were found in K, Ca, Mg, Zn, Mn, Fe and the most important in Al. High differences were fou nd in Hg, As and Ni. The decreasing tendency in K is very high in old needles and also in Mn. The accumulation of the following elements in old needles was found: Ca, Mg, Cu, Fe, Al, Pb, Cd, Sb, As. These data are given in 3 Tables.