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    Downward Movement of Soil Organic Matter and Its Influence on Trace-Element Transport (210Pb, 137Cs) in the Soil

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    Author
    Dörr, Helmut
    Münnich, K. O.
    Issue Date
    1989-01-01
    Keywords
    lead
    Pb 210
    transport
    cesium
    alkali metals
    Cs 137
    metals
    soils
    dates
    isotopes
    radioactive isotopes
    absolute age
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    Citation
    Dörr, H., & Münnich, K. O. (1989). Downward movement of soil organic matter and its influence on trace-element transport (210 Pb, 137 Cs) in the soil. Radiocarbon, 31(3), 655-663.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 13th International Radiocarbon Conference held in Dubrovnik, Yugoslavia, June 20-25, 1988.
    URI
    http://hdl.handle.net/10150/652985
    DOI
    10.1017/S003382220001225X
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Data on depth distribution and 14C content of soil organic carbon, and on soil CO2 production in forest ecosystems are presented and discussed. Downward movement and turnover of soil organic matter is estimated from a box chain model. The downward transfer velocity of soil organic material depends on the litter material composition and on the annual rate of microbial decomposition. Depth distribution of 210Pb and 137Cs was measured. The identical transfer velocity of 210Pb and soil organic material suggests that lead transport is due to movement of the organic material itself. Lead in organic-rich soils obviously is bound rather tightly to the organic carrier by ion exchange or organic complexing. 137Cs migration depends on the turnover and downward movement of soil organic material. Results suggest that cesium is not transported only by the downward movement of solid organic matter, but, due to chemical exchange between the organic and hydrous phases, travels faster than organic matter.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S003382220001225X
    Scopus Count
    Collections
    Radiocarbon, Volume 31, Number 3 (1989)

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