Podrobnosti záznamu

Název
    The biogeochemistry of basic cations in two forest catchments with contrasting lithology in the Czech Republic
Údaj o odpovědnosti
    Pavel Krám, Jakub Hruška, Brian S. Wenner, Charles T. Driscoll, Chris E. Johnson
Autor
    Driscoll, Charles T.
    Hruška, Jakub
    Johnson, Chris E.
    Krám, Pavel, 1960-
    Wenner, Brian S.
Jazyk
    anglicky
Zdrojový dokument - seriál
    Biogeochemistry
Svazek/č.
    Vol. 37, no. 2
Strany
    p. 173-202
Rok
    1997
Poznámky
    3 obr., 9 tab., 4 s.bibl.
    Zkr. název ser.: Biogeochemistry
Předmětová skupina
    acidifikace
    biogeochemie
    granit
    hydrochemie
    kyselý déšť
    malé povodí
    pedogeochemie
    půdy
    serpentinit
    zvětrávání
    životní prostředí
Geografické jméno
    ČR-Čechy
    Slavkovský les
Klíčové slovo
    Basic
    Biogeochemistry
    Catchments
    Cations
    Contrasting
    Czech
    Forest
    Lithology
    Republic
    Two
Abstrakt (anglicky)
   he biogeochemistry of Ca, Mg, K, and Na were investigate in two forested catchment in the Czech Republic, one underlain by leucogranite, the other by serpentinite. High weathering rates at the serpentinite site at Pluhův Bor resulted in Mg2+ as the dominant cation on the soil exchanges complex and in drainage water. Other basic cations (Ca2+, K+, Na+) showed relatively low concentrations and outflow in streamwater. The catchment exhibited high base saturation in mineral soils (70), and near neutral soil and stream pH, despite elevated inputs of scidic deposition. Slow growth of Norway spruce at Pluhův Bor may be caused by K deficiency, Mg oversupply and/or Ni toxicity. In contrast, the granitic site at Lysina showed low concentrations of basic cations on the soil exchange complex and in streamwater. Soil and drainage water in Lysina were highly impacted by acidic deposition.
   Soil pH was extremely acidic (<4.5) throughout the soil, profile, and the base saturation of the mineral soil was very low (<5). Supplies of basic cations from atmospheric deposition and soil processes were less than inputs of SO42- on an equivalence basis, resulting in low pH and high concentrations of total Al in drainage water. Needle yellowing in Norway spruce was possibly the result of Mg deficiency at Lysina. Because of their extremely different lithologies these catchments serve as valuable end-members of ecosystem sensitivity to elevated elevels of acidic deposition
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    21. 2. 2008
Datum importu
    8. 8. 2012