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    Wyświetlanie 1-5 z 5
    Tytuł:
    Proba oceny wplywu podszytow na glebe, mikroklimat i roslinnosc w drzewostanach sosnowych na ubogich piaszczystych glebach lesnych
    Autorzy:
    Tuszynski, M.
    Gorzelak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/813695.pdf
    Data publikacji:
    1998
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    gleby lesne
    wzrost roslin
    oddzialywanie na srodowisko
    mikroklimat
    lesnictwo
    roslinnosc lesna
    gleby piaszczyste
    podszyt
    Źródło:
    Sylwan; 1998, 142, 08; 15-26
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ właściwości gleb piaszczystych na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce. I. Odczyn, zawartość CaCO3 i cechy związane z głębokością gleby
    Impact of soil properties on site index class of Scots pine (Pinus sylvestris L.) stands in south-western Poland. I. pH, content of CaCO3, and properties concerning soil depth
    Autorzy:
    Sewerniak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008810.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    bonitacja
    gleby lesne
    gleby piaszczyste
    odczyn gleby
    zawartosc weglanu wapnia
    miazszosc gleb
    soil
    pinus sylvestris
    ph
    calcium carbonate
    soil depth
    Opis:
    The research was conducted in 268 Scots pine (Pinus sylvestris L.) stands, separately on soils of different moisture – non−gleyic (215 plots) and gleyic (53). The site index (B) of every Scots pine stand was determine as mean height of the ten thickest trees per 0.1 hectare, recalculated for the base−age of 100 years. The results show clearly negative relationship between the pine site index and pH values, that is probably caused by positive impact of soil acidity on (i) mycorrhiza symbiosis and (ii) nutrients releasing from minerals in weathering processes. The optimum soil pH for Scots pine site index was defined as regarding ca. 4.5 pHH2O and 4.0 pHKCl. There was not stated any impact of CaCO3 content in soil parent material on pine growth. The soil depth was positively related to the site index only when non−gleyic soils were concerned. On gleyic soils any relation between soil depth and pine growth was found. The results showed that in different soil moisture conditions, properties of opposite soil zones play the key role for the pine growth. When pine was planted on non−gleyic soils, the site index was much more related to properties of deeper horizons and parent material than of topsoil, while on gleyic soils the site index was correlated to properties of surface soil layer mainly.
    Źródło:
    Sylwan; 2012, 156, 06; 427-436
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zróżnicowanie roślinności monokultur sosnowych na glebach piaszczystych Borów Tucholskich
    Diversity of vegetation in Scots pine monocultures on sandy soils in the Bory Tucholskie
    Autorzy:
    Stefańska-Krzaczek, E.
    Faltynowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/990036.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Bory Tucholskie
    gleby piaszczyste
    drzewostany sosnowe
    zespol Leucobryo-Pinetum
    monokultury sosnowe
    roslinnosc
    zbiorowiska roslinne
    sklad gatunkowy
    leucobryo−pinetum
    vegetation classification
    stand rotation
    coniferous forest
    low−nutrient forest sites
    Opis:
    Scots pine stands are the most important forest type in Poland and the differentiation of the natural vegetation in these forests is well known. However, the intensive utilization causes the formation of the secondary communities, so that further studies of the vegetation diversity should be carried out with taking into consideration stand age and homogeneity of site conditions. The aim of this work is to assess the diversification of plant communities across the gradient of tree stand age. Scots pine stands on oligotrophic sites of the Przymuszewo Forest District were examined with dividing into six age classes ( 10, 11−20, 21−40, 41−60, 61−80, 81−120 years old). Numerical analysis allowed to differ 4 plant communities: non−forest community of Placynthiella−Cladonia sp. div. related to young stands before crown closure ( 10 years old), secondary forest community of Pinus sylvestris−Cladonia subulata related to young stands just after crown closure (11−20 years), forest communities of Leucobryo−Pinetum variant with Cladonia and typical variant – both related to stands older than 20 years. The identified communities differ in terms of species richness and vertical structure, but they are repetitive combinations of species which can be classified within hierarchical syntaxonomical system. They show common features with the communities of south−western Poland, but differ from plant communities of managed Scots pine forest in the continental part.
    Źródło:
    Sylwan; 2014, 158, 02; 99-106
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ właściwości gleb piaszczystych na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce. II. Wybrane właściwości chemiczne
    Impact of soil properties on site index class of Scots pine (Pinus sylvestris L.) stands in south-western Poland. II. Some chemical properties
    Autorzy:
    Sewerniak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/972761.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    bonitacja
    gleby lesne
    gleby piaszczyste
    wlasciwosci chemiczne
    zawartosc wegla organicznego
    zawartosc azotu
    stosunek wegla do azotu
    kationy wymienne
    kompleks sorpcyjny
    kationy zasadowe
    wysycenie kationami
    soil
    pinus sylvestris
    site index
    tree growth
    nutrients
    chemical soil properties
    Opis:
    Impact of some chemical soil properties (OC and Nt content as well as C:N ratio in humus horizon; exchangeable cation stocks and base saturation) on site index class of Scots pine (Pinus sylvestris L.) was analyzed. The study was conducted in 67 plots, separately on sandy soils of different moisture – non−gleyic (51 plots) and gleyic soils (16). For every soil pit, stocks of particular cations were calculated to the five depths: 25, 50, 100, 150 and 200 cm. The distinct positive impact of N, K and Mg on the pine site index was stated. The strong influence of K was assumed to be caused by the strong effect of potassium on water economy of trees. The positive relation between Ca soil stocks and pine growth was also stated, however, the relation was described to be an indirect one. Probably it reflected the stated clear intercorrelation of Ca with K and Mg content. The only element that was determined as negative correlated to the site index was Na, that was especially distinct when topsoil Na stocks were concerned. The negative correlation was presumed to reflect sodium adverse effect on soil structure, that resulted in decreasing water sorption in topsoil and thus caused less favourable site moisture conditions for pine growth. The results showed that when refer to the soil depth, the strength of the correlation between stocks of particular cations and the pine site index was strictly dependent on soil moisture: on non−gleyic soils, on the contrary to gleyic, the correlation strength was directly proportional to soil thickness taking into consideration in statistical analysis.
    Źródło:
    Sylwan; 2012, 156, 07; 518-525
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ujęcie wpływu właściwości gleb piaszczystych na bonitację drzewostanów sosnowych w południowo-zachodniej Polsce w modelach regresji
    Regression models for impact of soil properties on site index class of Scots pine (Pinus sylvestris L.) stands in south-western Poland
    Autorzy:
    Sewerniak, P.
    Piernik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008712.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    gleby lesne
    gleby piaszczyste
    uziarnienie gleby
    wlasciwosci chemiczne
    odczyn gleby
    zawartosc azotu
    zawartosc potasu
    zawartosc weglanu wapnia
    poziom prochniczny gleby
    miazszosc
    oglejenie gleby
    drzewostany sosnowe
    bonitacja drzewostanow
    modele regresyjne
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    wzrost roslin
    Polska Poludniowo-Zachodnia
    soil
    pinus sylvestris
    site index
    tree growth
    regression models
    Opis:
    The research was conducted in 268 pine stands on soils of sandy texture. In the paper 6 regression models for site index of Scots pine (Pinus sylvestris L.) were presented. The soil properties enclosed in the models explained to 40−60% of the site index variability. In the regression analyses, the following soil properties were found to be the best variables that described the site index: pHKCl, contents of fine textural fractions, content of K and N, CaCO3 content, soil moisture conditions reflected in gleying occurrence in a soil profile and a thickness of a solum or of a humus horizon (depending on the site moisture). The CaCO3 content was found to be a useful variable for the site index models only unless other chemical soil parameters were available. In such cases occurrence of CaCO3 in models reflects an impact of K and Mg soil content on pine growth that results from strong intercorrelations between Ca, K and Mg contents in the investigated soils. The site index was higher when pine stands were overgrowing gleyic than non−gleyic soils. In the presented regression models the difference was estimated to be about 1.5 m.
    Źródło:
    Sylwan; 2012, 156, 08; 563-571
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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