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Distribution and quantification of Pb in an evergreen broadleaved forest in three hydrological years

Journal of Forestry Research 2020年第6期31卷 2225-2234页

作者： Panagiotis Michopoulos Athanassios Bourletsikas Kostas Kaoukis Marios Kostakis Nikolaos SThomaidis ioannis ipassias Helen Kaberi Stelios Iliakis H.A.O.demeter-institute of mediterranean forest ecosystems terma alkmanos11528 athensgreece laboratory of analytical chemistry department of chemistrynational and kapodistrian university of athens15771 athensgreece institute of oceanography hellenic centre for marine research46.7 km athinon-souniou ave19013 anavyssosgreece

The distribution,quantification and fluxes of Pb were examined in an evergreen broadleaved forest in western Greece for three hydrological *** specifically,concentrations and annual fluxes of Pb were determined in bulk and throughfall deposition as well as *** Pb concentrations were also measured in forest floor and mineral soil up to 80 cm and the isotopic ratios of 206Pb/207Pb were determined in soil layers and the parent rock *** variability in the fluxes of the metal among the three hydrological years were found,evidence of the variability of Pb deposition in *** fractions with a large surface area,like holm oak flowers,had high Pb *** a steady state model and considering the Pb amounts in throughfall and litterfall as inputs on the forest floor,the mean residence time of Pb in the forest floor was 94 years with a coefficient of variation equal to 41%.More observations are needed to lower the variability of the mean residence *** isotopic ratio in the rock material was defined as the lithogenic *** statistical tests showed that the petrol derived Pb migrated to the depth of 20 cm and its percentages in the soil pedon was in the range of 62%in the L horizon to 11%in the 10–20cm *** higher depths(>40 cm)preindustrial anthropogenic Pb affected the isotopic *** the forest under consideration is remote from industrial activities,the results can serve as a baseline for future studies on Pb distribution and quantification.

关键词： Evergreen broadleaved forest Lead Throughfall Litterfall Forest floor Soil Isotopic ratios

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