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Wyszukujesz frazę "peat soil" wg kryterium: Temat


Tytuł:
Enzyme activity in forest peat soils
Autorzy:
Blonska, E.
Tematy:
enzyme activity
forest soil
peat soil
dehydrogenase
urease
Pokaż więcej
Wydawca:
Instytut Badawczy Leśnictwa
Powiązania:
https://bibliotekanauki.pl/articles/38510.pdf  Link otwiera się w nowym oknie
Opis:
The aim of the study was to determine the activity of dehydrogenases and urease in forest peat soils of different fertility. There were selected 23 experimental plots localised in central and northern Poland. The research was conducted on forest fens, transition bogs and raised bogs. The biggest differences in soil physical and chemical properties were detected between fen and raised bog soils while raised bog soils and transition bog soils differed the least. Statistically significant differences between particular subtypes of peat soils were observed for soil pH-H2O, pH-KCl, C/N ratio as well as the content of organic carbon, nitrogen, calcium and potassium. The highest average dehydrogenase activity in the soil surface level was observed in fen soils, and the lowest – in raised bogs soils. The results obtained on urease activity were similar. Differences in urease activity in the studied soil types were shown. Dehydrogenase activity did not reveal statistically significant diversity. The activity of urease was negatively correlated with the content of carbon, C/N ratio, hydrolytic acidity and moisture. Also the increase in enzymatic activity accompanied by the increase in pH has been observed.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nitrogen fractions in dehydrated peat soils
Autorzy:
Becher, Marcin
Żukowski, Emil
Tematy:
muck
oles peat soil nitrogen
peat degradation
peat moss
sequential analysis
Pokaż więcej
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:
https://bibliotekanauki.pl/articles/1066276.pdf  Link otwiera się w nowym oknie
Opis:
The aim of the study was to determine the nitrogen speciation in organic soils under mulching, made from sedge and peat. For speciation tests, the method based on extraction with neutral reagent and two-stage acid hydrolysis allowing the separation of mineral nitrogen and organic forms: soluble, easily hydrolysable, hardly hydrolyzing and non-hydrolyzing. Characteristic for the degradation of dehydrated peats, the processes of oxygen transformation of organic matter increased the share of the most mobile soluble and easily hydrolysable fractions. The easily soluble and easily hydrolysable fraction was closely correlated with the decomposition processes of the organic matter of the studied soils. It was confirmed that a useful indicator describing the state of transformations of peat soils occurring after their dehydration, may be the ratio of the amount of nitrogen of the easily hydrolysable to the hardly hydrolysable form. The value of this ratio showed a significant linear relationship with soil characteristics characteristically variable in transformation processes of drained peat soils. It grew along with the advancement of decomposition processes of organic matter.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phosphorus Accumulation in the Dehydrated Peat Soils of the Liwiec River Valley
Autorzy:
Becher, Marcin
Pakuła, Krzysztof
Jaremko, Dawid
Tematy:
peatland
peat soil
secondary transformation process
phosphorus forms
soil horizon
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/123721.pdf  Link otwiera się w nowym oknie
Opis:
The aim of the research was to complement the knowledge on profile distribution and accumulation of phosphorus forms in the soils changed under the influence of secondary organic matter transformation process in dehydrated peatlands. The soil research was carried out in the upper Liwiec river valley in the middle-east of Poland. In the soil material taken from the moorsh (M1, M2, M3) and peat (O) horizons of the Murshic Histosols, the physical and chemical properties were determined and the soil phosphorus fractions with different activity in the environment by sequential extraction method were separated. The profile distribution of the total phosphorus content (TP) and values of carbon/phosphorus (TC/TP) ratio were characteristic for dehydrated peat soils included in the secondary transformation process (M1>M2>M3>O). This process also increased the contribution of the available phosphorus forms (NH4Cl-P), forms bound on the surface of iron (III) and manganese (IV) oxides and hydroxides (redox-P), as well as mineral (mHCl-P) and organic (oHCl-P) forms separated by 0.5 M HCl. Significant accumulation of the phosphorus compounds in the moorsh horizons of the investigated soils can be considered as a potential threat to the natural environment of the studied area due to the risk of decomposition of the phosphorus compounds when the area will be rehydrated.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Properties of peaty soils on wooded and unwooded part of Litmirz peat-bog (Western Bieszczady)
Właściwości gleb torfowych zalesionej i niezalesionej części torfowiska Litmirz (Bieszczady Zachodnie)
Autorzy:
Bielak, Bogusław
Opis:
Głównym celem tej pracy było zbadanie oddziaływania zbiorowisk leśnych na gleby torfowe, na przykładzie bieszczadzkiego torfowiska Litmirz. Przeprowadzono badania terenowe, laboratoryjne oraz kameralne. W badaniach terenowych najważniejszy był pomiar pH, temperatury oraz stopnia rozkładu materiału torfowego. Badania laboratoryjne objęły pomiar wilgotności aktualnej, ponowny pomiar pH metodą potencjometryczną w wodzie destylowanej oraz w 1M KCl, a także ocenę zawartości materii organicznej na podstawie straty żarowej. Uzyskane wyniki odzwierciedlają procesy zachodzące na torfowisku oraz pozwalają na sformułowanie wniosków, które wskazują na nieznaczne oddziaływanie zbiorowisk roślinnych na gleby torfowe.
The main aim of studies was to examine the impact of forest on peaty soils - the case study on Litmirz peat-bog (Bieszczady National Park). The main field study was to test the pH, temperature and the degree of peat decomposition. Laboratory tests included measurement of actual moisture, the re-examination of the pH by potentiometry in distilled water and 1M KCl, and the assessment of organic matter on the basis of loss - on - ignition. The results reflect the processes occurring in the bog, and allow to draw conclusions witch tell about very low affecting by local flora on peaty soils.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne

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