Root uptake of lead by Norway spruce grown on Pb-210 spiked soils

M.F. Hovmand, Sven Poul Nielsen, I. Johnsen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The root uptake of lead (Pb) by trees and the transfer of Pb by leaf litter deposition to the forest floor were investigated through a pot experiment with Norway spruce. Natural Pb and radio isotopic lead (210Pb) were determined in needles and twigs and in the pot soil spiked with 210Pb. Calculations of the specific activity in plant material and in the supporting pot soil showed that less than 2% of the Pb content of needles and twigs originates from root uptake and approximately 98% are deposited from the atmosphere. Atmospheric Pb has declined by a factor of 7 from 1980 to 2007 but is still a major pathway of Pb to vegetation and topsoils. The conclusion from the experiment is that the internal circulation of Pb through root uptake, translocation and litterfall, gives an insignificant input of Pb to the forest floor compared to atmospheric deposition.
    Original languageEnglish
    JournalEnvironmental Pollution
    Volume157
    Issue number2
    Pages (from-to)404-409
    ISSN0269-7491
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Radioecology and tracer studies
    • Nuclear technologies

    Fingerprint Dive into the research topics of 'Root uptake of lead by Norway spruce grown on Pb-210 spiked soils'. Together they form a unique fingerprint.

    Cite this