- 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