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Wyświetlanie 1-2 z 2
Tytuł:
Sukcesja wtórna drzew w krajobrazie wydmowym stałej powierzchni badawczej Glinki w świetle analizy GIS
Secondary succession of trees in the dune landscape of the "Glinki" long-term research area - analysis with GIS
Autorzy:
Sewerniak, P.
Mendyk, L.
Powiązania:
https://bibliotekanauki.pl/articles/1311058.pdf
Data publikacji:
2015
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
poligony wojskowe
stale powierzchnie obserwacyjne
wydmy
sukcesja roslin
drzewa
rozmieszczenie przestrzenne
analiza przestrzenna
relief
slope aspect
Podzols
military area
spatial analysis
Opis:
The aim of the study was to present the main characteristics of the “Glinki” research area together with results of the first measurements on tree number, density, distribution and species composition carried out in 2011. The research was conducted in a free-of-forest management part of the Toruń military area which is located in one of the biggest inland dune fields of Europe. The “Glinki” research area was established in 2011 and consists of two plots (together 26.3 ha), which are in close proximity to each other. After the last fire in 1991, secondary succession has been the main factor shaping vegetation on both plots. For every plot, the location of all trees of at least 1 m height (560 in plot I and 292 in plot II) was determined. These measurements were subjected to spatial analysis in ArcGIS 9.3 with special emphasis on the exposure of the dune slopes. The main tree species on both plots were Scots pine, Pinus sylvestris, and birch, Betula pendula, (82 % and 17 % of all trees respectively). Tree density 20 years after the last fire was very low (32 trees/ha), which mainly resulted from the lack of a sufficient source of seeds in the close vicinity of the plots during the first years after the fire. We also found that tree distribution was related to the main direction of seed inflow and land relief. Tree density was much higher on dune slopes with a northern exposure when compared to other slope exposures, which resulted from different site conditions on the different slopes.
Źródło:
Leśne Prace Badawcze; 2015, 76, 2; 122-128
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwarunkowane litopedogenicznie rozmieszczenie Cu, Ni i Zn w profilach leśnych gleb rdzawych i glejobielicowych terasy nadzalewowej Słupi
Vertical distribution of Cu, Ni and Zn in Brunic Arenosols and Gleyic Podzols of the supra-flood terrace of the Slupia River as affected by litho-pedogenic factors
Autorzy:
Jonczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/1313255.pdf
Data publikacji:
2014
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
gleboznawstwo lesne
gleby lesne
gleby rdzawe
gleby glejobielicowe
profile glebowe
metale ciezkie
miedz
nikiel
cynk
zawartosc pierwiastkow
rozmieszczenie pierwiastkow
tarasy nadzalewowe
dolina Slupi
copper
nickel
zinc
Brunic Arenosols
Gleyic Podzols
Opis:
The aim of the study was to assess the influence of lithological and pedogenic factors in the shaping of Cu, Ni and Zn distribution patterns in the profiles of Brunic Arenosols and Gleyic Podzols of the lower supra-flood terrace of the Słupia River, which is located outside the range of significant anthropogenic sources of pollution with these metals. The contents of the investigated metals were analyzed in aqua regia extracts of samples collected from three profiles of Brunic Arenosols, composed of river sands, and three profiles of Gleyic Podzols, composed of river sands transformed by eolian processes. In general, river sands contained higher amounts of Ni and Zn (2.6–6.9 mg·kg-1 Ni; 10.3–16.2 mg·kg-1 Zn) compared to eolian sands (1.2–2.4 mg·kg-1 Ni; 3.3–17.3 mg·kg-1), while the content of copper tended to be higher in eolian sands (1.3–1.9 mg·kg-1) than river sands (0.1–1.5 mg·kg-1). The observed differences between the two types of sand are due to the loss of fine granulometric fractions and various minerals during eolian processes. Higher concentrations of the investigated metals in soil solum as compared to parent material are due to their uptake from deeper parts of the soil by roots and subsequent return to the soil surface by litter fall. Therefore, the highest concentrations of Cu, Ni and Zn were observed in ectohumus. In the mineral component of the soil, the highest concentrations were observed in organic matter-rich A and B horizons, which indicate close interactions between heavy metals, humic substances and iron oxides. The vertical distribution of the investigated metals in the profiles of Gleyic Podzols indicates their leaching during podzolization. The observed contents of Cu, Ni and Zn, both in Brunic Arenosols and Gleyic Podzols, were lower than the geochemical background, which confirms that anthropogenic contamination of the studied area with these metals is marginal.
Źródło:
Leśne Prace Badawcze; 2014, 75, 4; 333-341
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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