Podrobnosti záznamu

    Long-term forest soil acidification, nutrient leaching and vegetation development: Linking modelling and surveys of a primeval spruce forest in the Ukrainian Transcarpathian Mts
    Hleb, Ruslan
    Houška, Jakub
    Hruška, Jakub
    Oulehle, Filip
    Šamonil, Pavel
    Šebesta, Jan
    Tahovská, Karolína
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Ecological Modelling
    Roč. 244, č. October
Výraz tezauru
    soil acidification, MAGIC molde, nitrogen leaching, acid deposition, Transcarpathian Mts., Norway spruce, vegetation changes
Klíčové slovo
Abstrakt (anglicky)
   The biogeochemical model MAGIC was applied to simulate long-term (1880-2050) soil and stratified soil solution (30 and 90cm depth) chemistry at a spruce dominated site in the western Ukraine (Pop Ivan, 1480 m a.s.l.) to evaluate the effects of acid deposition on soil acidification in a less polluted region of Europe. Since 2008, sulphur (S) deposition of 9 kg ha-1 year-1 and nitrogen (N) deposition of 8.5 kg ha-1 year-1 have been measured at Pop Ivan. The recent deposition of S and N is about 30% and 50% of those values estimated for the early 1980s, respectively. Acidic deposition caused the depletion of base cations (Ca, Mg, Na, K) from the soil cation exchange complex, which resulted in a decrease of calcium and magnesium saturation between 1935 and 2008 in the top mineral soil (0-30cm) and deeper mineral soil (30-80cm) by 67% and 88%, respectively. Base cation leaching acted as the major buffer mechanism against incoming acidity, therefore the measured inorganic aluminium (Al) conc
   entration in soil solutions is ca. 10 ?mol L-1 and the subsequent molar (Ca+Mg+K)/Al ratio above 1. Recovery of the soil solution pH and Al is expected within the next 40 years, whereas the soil base saturation will only increase slowly, from 6% to 9.8% in the top soil and from 5.5% to 11% in the deeper mineral soil. Since the 1960s, modelled inorganic N leaching (as NO3) has started to increase following the trend in N deposition. Modelling and experimental evidence suggest that N availability from mineralization and deposition exceeds the rate of microbial and plant immobilization. Thus, soil N accumulation since the 1960s has been limited. A significant increase in nitrophilous species as well as a decrease of herb layer diversity was observed between 1936 and 1997.
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
Datum importu
    15. 10. 2014