ORIGINAL RESEARCH
Trace Elements Dynamics in the Upper Soil Horizons of the Puszcza Kampinoska Biosphere Reserve
E. Janowska*, D. Czępińska-Kamińska
 
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Warsaw Agricultural University, Division of Soil Science, Department of Environmental Sciences,
Nowoursynowska 159 St., 02-776 Warsaw, Poland
 
Pol. J. Environ. Stud. 2004;13(4):367–374
 
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ABSTRACT
This paper presents the results of a long-term study on trace elements content in the ectohumus horizons (O) and the mineral horizons (A or A/B) of the Puszcza Kampinoska Biosphere Reserve soils. Studied were the trace elements: Mn, Pb, Zn, Cu, Ni, Cr, Co. It was found that the mineral horizons of the soils contain natural amounts of the heavy metals; an increased concentration of Pb, Zn and Cu was found in ectohumus in some localities and dates. The observed years-long trend of the studied metals concentration has recently been diminishing. The recommended earlier critical values for forest ectohumus were confirmed.
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