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    Wyświetlanie 1-4 z 4
    Tytuł:
    Dynamics of Cu, Mn, Ni, Sr and Zn release during decomposition of four types of litter in headwater riparian forests in northern Poland
    Autorzy:
    Jonczak, J.
    Parzych, A.
    Sobisz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317603.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    heavy metal
    strontium
    black alder
    leaf litter
    decomposition
    dynamics
    copper
    manganese
    nickel
    zinc
    headwater area
    riparian forest
    Polska
    leaf litter decomposition
    headwater areas
    heavy metals
    Opis:
    The aim of the study was to compare the dynamics of Cu, Mn, Ni, Sr and Zn release during decomposition of leaves of Black alder (native material), Norway maple, Red oak and European beech (exogenous material) in the area of headwater riparian forests along the upper course of the Kamienna Creek (Northern Poland). Litter bag method was used in the experiment. Initial materials differed in terms of their chemical composition. Cu, Mn, Ni, Sr and Zn contents were low in general, and in fact, even a few times lower than limit values for decomposition rate. Different trends in the dynamics of the leaf metal content during decomposition were observed in particular tree species despite the fact, that every materials were exposed in the same site. Release dynamics was strongly affected by the content of metals in initial materials and in topsoil. Accumulation of Cu, Mn and Zn was observed during decomposition of poorest in the elements maple leaves, as well as Ni in alder leaves and Sr in the leaves of maple, alder and oak. In beech leaves we observed intensive leaching of Ni, whereas downward trends in the Cu concentration of beech leaves, as well as Mn and Zn in beech and oak leaves, were related to weight loss of the leaves. In some cases, the dynamics of metal release displayed a more complicated two- or three-stage character (release of Ni from maple and oak leaves; Cu from maple leaves; Sr from alder, maple and oak leaves; and Zn from alder and maple leaves).
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 193-200
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics, structure and chemistry of litterfall in headwater riparian forest in the area of Middle Pomerania
    Autorzy:
    Jonczak, J.
    Olejniczak, M.
    Parzych, A.
    Sobisz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/15438.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    litter fall
    dynamics
    structure
    chemistry
    nutrient
    heavy metal
    headwater area
    riparian forest
    Pomeranian region
    Opis:
    The following research on plant litterfall mass, dynamics, structure and chemistry was conducted from 2012 to 2014, on a 40- to 86-year-old stand of black alder (Alnus glutinosa) growing in a headwater area of the upper part of the valley of the Kamienna Creek (Middle Pomerania). Litterfall was collected every month with 20 circular traps, dried untill constant weight, divided into fractions, weighed and analyzed. The annual amount of litterfall deposited on soil during the study period ranged from 3482.5 to 4106.9 kg·ha-1, showing a dynamics pattern typical of temperate decidous forests. Leaves constituted the major fraction of litter with share of between 78.0 and 81.6% in its total mass. The contribution (in %) of twigs was 4.9-5.6, flowers 2.8-8.3, fruits 0.2-0.9 and other components 7.6-9.2. The relatively stable environmental conditions of headwater areas and the absence of disrupting factors during the study period were reflected in the low temporal variability of litterfall mass, dynamics and chemical composition of its individual fractions. The average annual pH of litterfall was 4.33-4.57. In general, litter was relatively rich in nitrogen and calcium but poor in phosphorus, potassium and magnesium. The content of Fe, Al and Mn was characteristic for these elements and low when compared to the other macroelements. The low contents of Cu and Zn confirm limited anthropogenic contamination of the investigated ecosystem with these metals. The annual return of the elements to the soil formed a series C>N>Ca>K>Mg>P>Mn>Fe>Al>Zn>Sr>Cu. A relatively large influx to the soil was noticed for nitrogen and calcium. Meanwhile, it was low for potassium, magnesium and phosphorus.
    Źródło:
    Journal of Elementology; 2016, 21, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany składu chemicznego wód w strumieniach śródleśnej niszy źródliskowej w dolinie Kamiennej (Pomorze Środkowe)
    Changes of water chemistry in mid-forest headwater streams in the valley of the Kamienna (Middle Pomerania)
    Autorzy:
    Parzych, A.
    Jonczak, J.
    Sobisz, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/989491.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Pomorze Srodkowe
    dolina Kamiennej
    nisze zrodliskowe
    strumienie lesne
    wody plynace
    wlasciwosci fizykochemiczne
    sklad chemiczny
    zmiany skladu chemicznego
    headwater areas
    springs
    water chemistry
    riparian forest
    Opis:
    The paper concerns changes of chemical composition of water in headwater streams in the valley of the Kamienna, left bank tributary of the Słupia River (54°19′N; 17°10′E). Water samples were collected in 2012 from three streams, in their upper, middle and lower course every month. Analysis included water temperature, pH, conductivity, and the content of dissolved oxygen, HCO3– , K+, Na+, Ca2+, Mg2+, NH4+, Cl–, NO3–, PO43– and SO42–. Water of the analysed streams was characterized by generally low concentration of solutes (tab. 1) and had bicarbonate−calcium character. The observed low variability of water temperature along the streams resulted from their shortness and rapid flow. Low variability was also observed in case of pH and Mg2+ content. Increasing trends downward the streams were noticed for dissolved oxygen, while decreasing changes were observed for HCO3–, NO3– and PO43–. The remaining components showed different trends in the individual streams, indicating importance of local−scale factors.
    Źródło:
    Sylwan; 2016, 160, 10; 871-880
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Właściwości materii organicznej gleb śródleśnych nisz źródliskowych w dolinie Kamiennej (Pomorze Środkowe)
    Properties of soil organic matter in soils of mid-forest spring niches in the Kamienna Creek valley (Middle Pomerania)
    Autorzy:
    Jonczak, J.
    Parzych, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/989393.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Pomorze Srodkowe
    dolina Kamiennej
    nisze zrodliskowe
    gleby lesne
    materia organiczna
    stopien rozkladu masy torfowej
    odczyn gleby
    zawartosc wegla organicznego
    zawartosc azotu ogolnego
    sklad frakcyjny
    absorbancja promieniowania
    headwater areas
    histosols
    soil organic matter
    Opis:
    The paper presents the result of the studies on the properties of soil organic matter in Sapric Histosols associated with mid−forest spring niches in the valley of the Kamienna Creek, left bank tributary of the Słupia River (northern Poland). We sampled five soil profiles at the depth of every 10 cm until the mineral bed was reached. We analyzed degree of peat mass decomposition, reaction and the content of organic matter, total organic carbon and total nitrogen. Fractional composition of soil organic matter was analyzed with Schnitzer method. We measured the absorbance at wavelenghts of 280, 465 and 665 nm in 0.01% alkaline solutions of humic acids and the absorbance ratios A2/6, A2/4 and A4/6 were calculated based on these data. The studied soils consisted of strongly and moderately decomposed alder and alder−sedge peat, which contained 309.7−829.0 g/kg of organic matter. The soils were moderately abundant in nitrogen and were characterized by low variability in pH (pHH2O 5.6−6.9). Soil organic matter was dominated by humins, contribution of which ranged from 71.5 to 91.9%. Humic acids constituted 4.9−22.1%, fulvic acids 1.9−6.7% and the most labile organic substances extracted during decalcification of samples (Cdek) – 0.2−1.1% (tab. 2). The observed relatively low degree of humification and quantitative predominance of humic acids over fulvic acids are features typical for riparian organic soils. High values of absorbance ratios of alkaline solutions of humic acids (tab. 3) indicate predominance of aliphatic structures over aromatic in their molecules, which is typical for weakly humified organic substances.
    Źródło:
    Sylwan; 2016, 160, 02; 135-143
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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