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    Wyświetlanie 1-4 z 4
    Tytuł:
    Waloryzacja siedlisk obszarów górskich na podstawie Siedliskowego Indeksu Glebowego (SIGg)
    Evaluation of the mountain sites on the basis of soil trophic index (SIGg)
    Autorzy:
    Brożek, S.
    Lasota, J.
    Blońska, E.
    Wanic, T.
    Zwydak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989710.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    tereny gorskie
    siedliska gorskie
    siedliska lesne
    waloryzacja
    Siedliskowy Indeks Glebowy
    site quality
    sigg
    mountain soils
    Opis:
    The correct assessment of the site conditions is the basis of the good management of forest areas. The aim of this study was to find a set of soil properties, which allow separating the diverse sites in terms of the soil productivity. We used 180 locations in the Carpathians and the Sudety Mountains for testing. The study plots were located in transects from the foothills to the top along the slopes, taking into account the variability of site conditions, geological substrate and exposition. The index was calculated on the basis of the content of <0.02 mm particles, the sum of exchangeable base cations, soil acidity and the ratio between total N content and organic C in the humus−mineral horizon. The soil trophic index for mountain areas (SIGg) that include the climatic factor was introduced. The factor is defined as the 650/altitude ratio for a given point above sea level. In the mountains, the content of <0.02 mm fraction, the sum of exchangeable base cations and soil acidity were determined in the column of 1 m² of the soil cross section and depth of 1 m (1 m³ of volume) due to the lower depth of the soil profile. The SIGg correctly separates soil of different productivity as the properties closely associated with the stable elements of the soil, expressing its production and properties, which reflect the current state of the soil environment, were used in the construction SIGg.
    Źródło:
    Sylwan; 2015, 159, 08; 684-692
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie Siedliskowego Indeksu Glebowego dla terenów górskich (SIGg) w ocenie jakości siedlisk zamierających drzewostanów świerkowych
    Application of the Soil Trophic Index for the mountain areas (SIGg) in the assessment of the quality of the dying spruce stands sites
    Autorzy:
    Januszek, K.
    Małek, S.
    Blońska, E.
    Barszcz, J.
    Chilarski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/989830.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    tereny gorskie
    drzewostany swierkowe
    zamieranie lasow
    siedliska lesne
    jakosc
    Siedliskowy Indeks Glebowy
    site quality
    mountain areas
    norway spruce
    Opis:
    In recent years, we face a massive dieback of Norway spruce stands in Poland. The cause of this process may lay in the way of their monocultural silviculture. The correct assessment of the habitat conditions and soil properties in particular is the basis of the proper management of these forest areas. The aim of this study was to verify application of the trophic soil index for mountain areas (SIGg) in the assessment of site conditions for spruce stands with different health condition. Three types of spruce stands were distinguished: degenerated, weakened and stable. In total, 32 study plots were established in following forest districts in southern Poland: Ustroń, Wisła, Bielsko, Węgierska Górka, Jeleśnia, Ujsoły and Lądek Zdrój. The SIGg was calculated on the basis of <0.02 mm fraction content, the sum of exchangeable base cations, soil acidity and the total content of N and organic C in the humus−mineral horizon. These attributes are useful to determine the potential productivity of the soils did not differentiate visibly the analyzed stand variants. The soil in degenerated and weakened spruce stands showed higher degree of acidity and less the content of base cations compared to soils of stable spruce stands. Mountain trophic soil index can be applied in the assessment of the forest sites potential. Although it does not enable to monitor the disturbances in the nutrients circulation, the detailed analysis of its components allows for precise assessment of the forest sites status.
    Źródło:
    Sylwan; 2015, 159, 05; 419-426
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Odnowienia sosny zwyczajnej Pinus sylvestris L. w Karpatach w zależności od żyzności siedliska
    Regeneration of Scots pine Pinus sylvestris L. in the Carpathians depends on site fertility
    Autorzy:
    Ambrozy, S.
    Kapsa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1290778.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    tereny gorskie
    Karpaty
    warunki siedliskowe
    zyznosc siedliska
    odnowienia lasu
    sosna zwyczajna
    Pinus sylvestris
    cechy biometryczne
    uszkodzenia drzew
    mountain region
    site conditions
    biometric features
    damage to trees
    damaging agents
    Opis:
    The aim of this work was to determine the biometric features of Scots pine Pinus sylvestris L. regeneration in terms of their susceptibility to weather-inflicted damage. We compared the damage between three sites located in the Polish part of the Carpathians: Scots pine planted in (I) fertile sites of mountain broadleaved and mixed broadleaved forest, (II) poor sites of mountain coniferous forest and (III) sites of Scots pine natural refuges during the post-glacial period. In each of the three sites of pine regeneration, 11 research plots were established with 50 pine trees on each plot. For each tree, the following biometric measurements were taken: diameter at breast height, height, three-year height increment, crown length and crown width measured along the contour line. The Scots pine regeneration was found to vary in terms of their biometric features depending on the site fertility. In fertile sites, the biometric parameters of the trees increased at a faster rate compared to low-fertility sites causing an increase in their susceptibility to damage by adverse weather conditions such as snow and rime. Therefore, the silvicultural risk in fertile sites is high and thus the introduction of pine for regeneration should be avoided in fertile broadleaved and mixed broadleaved forests even if pine provenances from a mountain origin are to be planted. Furthermore, tending cuts in regeneration should be made frequently, but with moderate intensity as to avoid excessive reductions in tree density. Intensive cuts, especially in fertile sites, promote the expansion of pine crowns, which further increases the risk of damage.
    Źródło:
    Leśne Prace Badawcze; 2019, 80, 3
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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