Changes in concentrations of Cd, Zn, Mn, Cu and Pb in Spruce (picea abies) needle litter during decomposition

摘要

Spruce (Picea abies (L.) Karst) needle litter was placed in litterbags and incubated (≥6 yr) at five spruce stands in southern Sweden. The litterbags were collected twice a year during year 1-2 and thereafter once a year, for total analyses (conc. HNO_3) of Cd, Zn, Mn, Cu and Pb. The main objectives were to document changes in concentrations an amounts of these elements during litter decomposition and to investigate factors controlling the changes.