Podrobnosti záznamu

Název
    Physical, chemical, and biochemical characteristics of soils in watersheds of the Bohemian Forest lakes: I. Plešné Lake
Údaj o odpovědnosti
    Jiří Kopáček, Jiří Kaňa, Hana Šantrůčková, Petr Porcal, Josef Hejzlar, Tomáš Picek, Josef Veselý
Autor
    Hejzlar, Josef
    Kaňa, Jiří, 1977-
    Kopáček, Jiří
    Picek, Tomáš
    Porcal, Petr
    Šantrůčková, Hana
    Veselý, Josef
Jazyk
    anglicky
Zdrojový dokument - seriál
    Silva Gabreta : sborník vědeckých prací ze Šumavy
Svazek/č.
    Roč. 8
Strany
    s. 43-66
Rok
    2002
Poznámky
    4 obr., 6 tab.
    4 obr., 6 tab., 3 s. bibl.
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Silva Gabreta
Předmětová skupina
    cambisol
    dusík
    fosfor
    jezero ledovcové
    kapacita výměny kationtů
    kvartér oblastí kontinentálního zalednění Českého masivu
    pedologie
    pH
    podzol
    půda humusová
    síra
    uhlík
Geografické jméno
    ČR-Čechy
    Plešné jezero (Klatovy)
    Šumava
    Šumava-Plešné jezero
Klíčové slovo
    Biochemical
    Bohemian
    Characteristics
    Chemical
    Forest
    Lake
    Lakes
    Physical
    Plešné
    Soils
    Watersheds
Abstrakt (anglicky)
   asic physical, chemical, and biochemical properties of mountain forest soils were determined in the Plešné Lake watershed in the 1997-2001 period. The watershed area was predominantly covered with an undeveloped 0.2 m deep organic rich soil (38 per cent), and 0.45 m deep podzol (29 per cent) or spodo-dystric cambisol (27 per cent). Stones 2mm in diameter, fine soil, and moisture contributed on average 49 per cent, 28 per cent, and 23 per cent to the total soil pool. Fine soil was sandy ("about"75 per cent) with a low ("about"2 per cent) content of clay and its watershed weighted mean (WWM) pool was 92 kg.m-2. Concentration of organic C was the dominant parameter, affecting most of soil properties (N, S, exchangeable base cations and protons). Relationship between C and P was less straightforward due to inorganic P forms associated with the Fe and Al oxides in horizons rich in illuvial metals.
   The WWM pools of C, N, S, and P were 936, 39, 1.6, and 1.9 mol.m2 (i.e., 112, 5.5, 0.52, and 0.58 t.ha-1), respectively. Soil pH was generally low, with the lowest pHCaCl2 values (2.5-3.1) in A horizons and highest (3.2-4.4) in the Bs and C horizons. The WWM cation exchange capacity was 129 meq.kg-1, 15 per cent of which was base saturation (Ca2+, 9 per cent; and Mg2+, Na+, and K+ 2 per cent each), and was dominated by exchangeable A13+ (57 per cent) and protons (28 per cent). The WWM C:N ratio was 24 for the whole soil profile and varied from 25 to 33 in the O horizons. Concentrations of C, N, and P in soil microbial biomass was on average 0.7 per cent, 2.7 per cent, and 11 per cent of total C, N, and P contents, respectively, suggesting a high microbial activity of soil.
   Carbon and nitrogen mineralization was highest in the O horizons (30+-9 and 0.24+-0.10 mmol.kg-1.d-1, respectively), while the highest potential nitrification (0.08+-0.03 mmol.kg-1.d-1) was associated with the A horizons. The average nitrification potential of the O, A, and Ae horizons (0.3, 0.9 and 2.6 mmol.m-2.d-1, respectively) was one order of magnitude higher than atmospheric deposition of NH4+ on the forest floor
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    25. 3. 2008
Datum importu
    8. 8. 2012