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    Wyświetlanie 1-4 z 4
    Tytuł:
    Ekspozycja stoków wydm w Kotlinie Toruńskiej a wybrane elementy ekosystemu boru sosnowego – wstępne wyniki badań
    Preliminary studies on the influence of dune-slope exposure on a pine forest ecosystem in the Torun Basin
    Autorzy:
    Sewerniak, P.
    Bednarek, R.
    Szymanska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/46376.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Kotlina Torunska
    wydmy srodladowe
    stoki
    ekspozycja terenu
    warunki siedliskowe
    temperatura powietrza
    wilgotnosc powietrza
    gleby
    wilgotnosc gleby
    runo lesne
    drzewostany sosnowe
    Źródło:
    Leśne Prace Badawcze; 2011, 72, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intensywność mineralizacji igieł w borze sosnowym w odniesieniu do warunków siedliskowych i mikrobiologicznych stoków wydm o kontrastowej ekspozycji
    Rate of mineralization of needles in Scots pine stand in relation to site and microbiological conditions occurring on dune slopes of contrasting aspects
    Autorzy:
    Sewerniak, P.
    Jasińska, J.
    Golińska, P.
    Składanowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989754.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    siedliska lesne
    bor sosnowy
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    igly sosny
    mineralizacja
    warunki siedliskowe
    wilgotnosc gleby
    temperatura gleb
    warunki mikrobiologiczne
    ekspozycja terenu
    wydmy
    scots pine
    forest site
    relief
    nutrient cycling
    soil microorganisms
    Opis:
    The aim of the study was to determine the rate of mineralization of needles in a pine stand in relation to site and to microbiological conditions occurring on dune slopes of contrasting aspects. The research was conducted in the old−growth pine forest overgrowing a latitudinally located dune in the Bydgoska Forest (N Poland). On contrasting dune slopes (northern and southern) rate of mineralization of pine needles was investigated in the 2−years experiment (2012−2014) with the litterbag method. Besides, following investigations were conducted in the middle part of both slopes: 1. dynamics of soil moisture and soil temperature were measured at a depth of 3 cm for 18 days during the 2013 growing season (interval of 2 weeks was applied) and 2. populations of bacteria and fungi were determined for all subhorizons of organic soil horizon (Ol, Of, Oh) as well as for a mineral horizon (AEs) of both soils. Weight loss of needles was found to be higher on northern than on a southern slope what was consequently stated for all 4 terms of taking measurements (6, 12, 18 and 24 months after placement of litterbags). The discrepancy has increased with time and after 2 years it equaled 14.7% when the loss was 61.1% for northern and 46.4% for a southern slope. It could be surprising that such differences were found in spite a sunny slope was characterized by stated in a study higher soil temperature. It should have a stimulating effect on mineralization of organic material; however a soil located on a southern slope was also found as much drier. Thus, the periodic deficiency of soil moisture was indicated as a limiting factor for occurrence of both bacteria and fungi on a southern slope due to the numbers of both groups of microorganisms were much lower on the slope than on a northern aspect. Conditioned by more favourable site parameters, higher number of microbial population occurring on a shadow slope could explain higher rate of mineralization of needles stated for the slope aspect. The moisture factor can be of especially high significance for microbial occurrence and activity and thus for litter decomposition just in dry inland dune ecosystems. It was concluded that in relatively monotonous pine forests overgrowing dry and poor in nutrients soils of inland dunes the slope aspect is an agent significantly differentiating both site and soil microbial conditions.
    Źródło:
    Sylwan; 2015, 159, 10; 839-847
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ sposobu przygotowania gleby na dynamikę jej warunków wodnych na wydmach Kotliny Toruńskiej
    Effect of site preparation method on dynamics of soil water conditions on inland dunes of the Torun Basin
    Autorzy:
    Sewerniak, P.
    Stelter, P.
    Bednarek, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/987135.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Kotlina Torunska
    wydmy srodladowe
    uprawy lesne
    rzezba terenu
    przygotowanie gleby
    plug LPZ-75
    frez lesny
    gleby bielicowe
    zawartosc wegla organicznego
    higroskopijnosc
    wilgotnosc gleby
    warunki wodne
    zapas wody w gruncie
    soil
    site preparation
    forest site
    inland dunes
    topography
    podzols
    dry areas
    Opis:
    The research was conducted in a young Scots pine (Pinus sylvestris) plantation located in a dune area of the Toruń Basin (N Poland). The aim of the study was to investigate differences in dynamics of soil water conditions followed different method used for site preparation. The three plots were investigated in the study: belt of soil prepared by a mill, north−facing slope of a dune (FR−N), belt of soil prepared with a mill, south−facing slope of a dune (FR−S) and soil prepared with a plough (furrows) on the ridge of a small aeolian mound (LPZ). On each plot soil samples were taken and soil moisture was regularly measured from April to December of 2013 (the TDR method). The measurements of soil moisture were taken at four depths (3, 10, 25 and 50 cm) at intervals of ca. 2 weeks. Additionally, soil moisture was also measured on 25.08.2015. It was done to determine soil water conditions for a deep summer drought (the measurements were taken twice this day – just before and after rain which turned to be the first since ca. a month). Reserves of soil moisture and shares of water unavailable to plants were calculated for every measure day for each study plot. As a result of higher organic carbon content, values of soil actual moisture as well as reserves of soil moisture were almost regularly higher for belts mixed with a mill than for furrows prepared with a plough (fig. 1, 3). Opposite relation was found, however for the summer drought (tab. 2). This was explained by the higher repellence of rich in organic mater, dried material occurring in belts. On 25.08.2015 much lower improvement of water conditions after rain was also stated for this material than for topsoil in LPZ. Unfavoured soil water conditions for plants occurring in belts in dry periods could explain relatively low dynamics of pine growth revealed for the variant of soil preparation in a previous study. However, it was concluded that a forest mill should be recommended for forestry, because the device much less disturbs topsoil than a plough. Besides, differences in growth parameters of pines followed different methods of soil preparation used before planting decline in next years of a stand growth.
    Źródło:
    Sylwan; 2017, 161, 01; 52-61
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ sposobu przygotowania gleby na dynamikę jej temperatury na wydmach Kotliny Toruńskiej
    Effect of site preparation method on dynamics of soil temperature on inland dunes of the Torun Basin
    Autorzy:
    Sewerniak, P.
    Stelter, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989413.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Kotlina Torunska
    wydmy srodladowe
    uprawy lesne
    rzezba terenu
    przygotowanie gleby
    plug LPZ-75
    frez lesny
    gleby bielicowe
    gestosc objetosciowa
    porowatosc
    wilgotnosc gleby
    zawartosc materii organicznej
    temperatura gleb
    dynamika temperatury
    pojemnosc cieplna
    soil
    thermal conditions
    site preparation
    inland dunes
    topography
    podzols
    dry areas
    Opis:
    The objective of the study was to determine the dynamics of soil temperature on inland dunes in the Toruń Basin (N Poland) with reference to the two methods of site preparation: homogenization of belts with a forest mill (FR) and preparation of trenches with a double−mouldboard plough LPZ−75 (LPZ). The study was conducted in a young Scots pine (Pinus sylvestris) plantation on plots with soil prepared by a forest mill on north− and south−facing slopes of a dune (FR−N and FR−S respectively) and with soil prepared with a plough on the ridge of a small aeolian mound (LPZ). On each plot a soil pit was dug and soil samples were taken from distinguished horizons for laboratory analyses. Besides, from April to December of 2013, at interval of ca. two weeks, soil temperature was measured at the depths of 3, 10, 25 and 50 cm. To estimate daily amplitudes of temperature in topsoil on the studied plots, in a sunny summer day (23.08.2013) the temperature was additionally measured from 5 a.m. to 9 p.m. with an hourly interval. These measurements were taken at the two upper depths (3 and 10 cm). Despite the fact that soil surface was distinctly darker for belts prepared with a mill than in trenches prepared by a plough, soil temperatures were almost regularly lower in FR−N and in FR−S than in LPZ. This concerns all the investigated depths. The differences were explained by much higher moisture of soil material in belts what involves higher thermal capacity and with that slower heat of a soil, as well as causes higher losses of thermal energy for evaporation. Another agent explaining this was indicated to be related to high porosity of materials found in the belts. Namely, especially in dry periods, high volume of soil pores are filled on the FR plots with air what impedes heat transfer in a soil. It was concluded that stated in a previous study worse growth of pines planted in milled belts than in tranches prepared with a plough was unlikely related to differences in soil thermal conditions. Thus, differences in growth dynamics of young pines in plots with site prepared by the two studied methods are caused by other reasons rather as primarily other competitive impact of weeds and differences in soil water conditions occurring at root system of young trees.
    Źródło:
    Sylwan; 2016, 160, 11; 923-932
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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