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Wyświetlanie 1-3 z 3
Tytuł:
Evolution of shallow post-bog soils developed on Holocene carbonate sediments in NW Poland
Autorzy:
Jarnuszewski, Grzegorz
Meller, Edward
Kitczak, Teodor
Powiązania:
https://bibliotekanauki.pl/articles/27312634.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
decomposition of organic matter
dehydration
Gleysols
groundwater
Histosols
Phaeozems
plant
communities
post-bog soils evolution
Opis:
This research presents the characteristics and inferred evolution of post-bog soils developed in the Last Glacial Maximum area of northwestern Poland near the southern Baltic coast. The study involved a total of five sites near existing lakes in NW Poland. In total, 21 soil pits were described and sampled and 17 piezometers were installed. In soil samples chemical and physical properties were determined. During the hydrological year the water level was checked and chemical properties of water were determined, the floristic composition at each location was also carried out. Mineralisation of post-bog soils initiated by dehydration leads to the decomposition of organic surface layers and an increase in CaCO3 content as well as mineral non-lime components at the expense of organic matter. A sequence of five soil types occurs in this landscape: Sapric Histosols (Limnic), Drainic Histosols (Calcaric, Limnic), Histic Gleysols (Murshic), Umbric Gleysols (Hyperhumic), Gleyic Phaeozems (Hyperhumic) that represent individual stages of soil genesis. Differences between the chemical properties of soils are apparent between organic vs organic-mineral and mineral layers. Man-induced drainage of post-bog soils changes their physical parameters. Bulk density increase and water retention decrease. The fluctuation of groundwater determines the moisture content of post-bog soils and affects the species composition of vegetation. Chemistry of groundwater is shaped mainly by the construction of catchment and the nature of its use, however, it is modified as a result of the inflow of macronutrients released during organic matter mineralisation processes and leaching of exchangeable forms from the sorption complex.
Źródło:
Journal of Water and Land Development; 2023, 58; 99--109
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular composition of humic substances isolated from permafrost peat soils of the eastern European Arctic
Autorzy:
Vasilevich, Roman
Lodygin, Evgeny
Abakumov, Evgeny
Powiązania:
https://bibliotekanauki.pl/articles/2041913.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Arctic
forest-tundra
Histosols
humic and fulvic acids
13C NMR
elemental and amino acid composition
Źródło:
Polish Polar Research; 2018, 39, 4; 481-503
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
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 1-3 z 3

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