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    Wyświetlanie 1-4 z 4
    Tytuł:
    Rola uziarnienia gleb w ocenie jakości siedlisk górskich
    The use of particle size distribution of soils in estimating quality of mountain forest sites
    Autorzy:
    Lasota, J.
    Błońska, E.
    Zwydak, M.
    Wanic, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1312582.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    gleboznawstwo lesne
    siedliska lesne
    siedliska gorskie
    jakosc
    gleby lesne
    uziarnienie gleby
    forest soil
    particle size distribution
    mountain forest sites
    Opis:
    The physical and chemical properties of soil are the basic features that are used in the assessment of mountain sites. The aim of this study was to produce a simple key for classifying forest sites in mountain areas using soil particle size distribution. 200 plots (standard typological space) were selected for examination, most of which are typical of the Carpathians – being dominated by flysch rock. A few plots were located in the Sudety and Tatra Mountains, which have a different surface geology, mostly metamorphic rock and granite. The study proved that soil properties (reaction, base saturation, content of base cations, organic carbon and nitrogen) are helpful in distinguishing and assigning soils to particular site types. The particle size distribution of forest mountain sites separated into different categories in terms of productivity. These results can be used to improve the classification of forest mountain sites.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 3; 253-262
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chrząszcze (Coleoptera) występujące w próchnie brzóz (Betula spp.) na terenie Kampinoskiego Parku Narodowego
    Beetles (Coleoptera) occurring in decaying birch (Betula spp.) wood in the Kampinos National Park
    Autorzy:
    Sawoniewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1318231.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    parki narodowe
    Kampinoski Park Narodowy
    siedliska lesne
    drzewa lesne
    brzoza
    Betula
    drzewa martwe
    owady saproksyliczne
    chrzaszcze
    Coleoptera
    sklad gatunkowy
    struktura zgrupowan
    forest type
    saproxylic insects
    Kampinos National Park
    Opis:
    The composition and structure of beetle clusters living in rotting birch wood in Kampinos National Park was investigated. Photoeclectors were used to remove beetles from collected wood samples. Ten different research plots, each corresponding to a different forest type, were sampled every month over a 1-year period. A collection of 3256 beetles from 37 families comprising 206 species was amassed during the study. The collected beetles were divided into trophic families, species rareness, and constancy and site fidelity classes. At the more fertile sites, species only able to live on highly-decayed wood were collected (F3), also species facultatively able to live on either dying trees or decaying wood (F1), species that do not live on decayed wood (F0) and other rare species. Trophic group of carnivores (Z) provided most species on more fertile sites. At coniferous forest sites, as well as mixed deciduous forest sites, most individuals collected belonged to mycophagous and myxomycophagous trophic groups. At the other sites, the largest group of collected individuals was zoophagous. The number of rare species was positively related to site fertility. The average number of species increased in accordance with increasing site fertility, however this trend was only statistically significant when applied to moist coniferous forest (Bw) and moist mixed broadleaved forest (LMw) sites. The study revealed differences in the composition and structure of beetle clusters from different forest types. These differences were probably not directly related to site type, but more likely to the form of nature conservation imposed on a particular area and the potential number of decayed deciduous tree trunks. Two different clusters of saproxylic Coleoptera related to birch rot were distinguished: the first includes strictly protected deciduous forest types, the second contains the remaining forest types.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 1; 71-85
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ wybranych elementów charakterystyki drzewostanów na intensywność występowania kornika drukarza Ips typographus (L.) w Beskidzie Żywieckim
    Impact of selected stand characteristics on the occurrence of the bark beetle Ips typographus (L.) in the Beskid Zywiecki Mountains
    Autorzy:
    Grodzki, W.
    Starzyk, J.R.
    Kosibowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317562.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Beskid Zywiecki
    siedliska lesne
    drzewostany
    miazszosc drzew
    wydzielanie sie posuszu
    szkodniki roslin
    kornik drukarz
    Ips typographus
    wystepowanie
    insect outbreak
    site
    stand characteristics
    spatial analysis
    Picea abies
    Opis:
    Recently, Norway spruce stands in Beskid ¯ywiecki (Western Carpathians) have been plagued by bark beetle outbreak affecting an extensive area over a large range of altitudes. Georeferenced data (2356 records) from 2009–2011 of the volume of felled spruces showing insect infestation in forest sub-compartments were analysed with respect to selected site and stand characteristics. The infestation intensity varied between individual parts of the examined area. Spruce mortality, recorded evenly across all slope expositions, was higher in the zones 800 m – 1000 m and above 1000 m than in the zone below 800 m. The infestation intensity increased slightly with spruce representation in the stands and was higher in stands older than 80 years. There was no clear correlation between spruce mortality and site quality. However, in areas with more diverse and fertile sites mortality was lower. In overall, the results obtained in this study are in line with previous knowledge on the subject, but patterns describing bark beetle preferences in infested areas appear to be less pronounced than those found in earlier publications. Risk assessment and current planning of forest protection measures in stands affected by bark beetle outbreaks should be based on the here described characteristics of spruce susceptibility to insect infection.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 159-169
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Promieniowa zmienność właściwości drewna sosny zwyczajnej (Pinus sylvestris L.) wyrosłej na gruntach porolnych
    Radial variation in the wood properties of Scots pine (Pinus sylvestris L.) grown on former agricultural soil
    Autorzy:
    Tomczak, A.
    Jelonek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339968.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    drewno sosnowe
    gestosc drewna
    gestosc umowna
    wytrzymalosc na sciskanie wzdluz wlokien
    wytrzymalosc na zginanie statyczne
    zmiennosc cech
    czynniki siedliska
    grunty porolne
    basic density
    static bending strength
    compressive strength along fibers
    Opis:
    The soil of former farmland greatly differs from forest soil, and significantly influences tree growth and development compared with other site factors. The effect may also be reflected indirectly in radial variability of wood. This study compared radial variation of wood density, compressive strength along the grain and static bending strength of wood of Scots pine trees growing on former farmland and forest soils. The analyses were conducted in eight mature pine stands. On the basis of the stand description, four stands were classified as growing on forest soil (L) and four as growing on former farmland soil (P). A total of 24 model trees were selected, twelve on each soil type. Analyses of wood properties were conducted along four axes from the cross sectional radius of the treesat breast height. Our analyses showed that radial variation in wood properties of Scots pine (from selected locations in Poland) growing on former farmland is similar to the variation among the control trees growing on forest soils. In both groups of trees, the lowest density and the lowest strength were in the pith (juvenile) zone. Wood with the highest density and greatest strength was located in the central part of the radius. Wood of Scots pine trees growing on former farmland soils in comparison to that of trees growing on forest soil was characterised by a statistically lower basic density, lower compressive strength along the grain and static bending strength.
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 171-177
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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