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    Tytuł:
    The Variability of Selected Features of the Morphological Structure of Scots Pine Introduced on a Reclaimed Waste Dump of a Former Sulfur Mine in Piaseczno
    Autorzy:
    Pająk, M.
    Wąsik, R.
    Michalec, K.
    Płoskoń, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/125306.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    forest reclamation
    post-mining areas
    diameter at breast height
    tree height
    crown length and width
    Opis:
    This paper presents the results of studies on the variability of selected features of the morphological structure of Scots pine trees, introduced on the post-mining lands in Piaseczno reclaimed for forestry. The field research was conducted in 2014 in the north-western part of a waste dump, on one-are circular sample plots. These plots were established in three groups, depending on the type of a substrate and the implemented reclamation treatments (1 – the Quaternary loose sands, 2 – mixed sediments of the Quaternary loose sands and the Tertiary Krakowiec clays, 3 – mixed sediments of the Quaternary loose sands and the Tertiary Krakowiec clays after an intensive preplant fertilization). The Scots pine trees introduced on the reclaimed dump displayed various crown structures and growth parameters. The longest and the widest crowns were recorded for the pine trees growing on mixed sediments of sands and clays, whereas the trees growing on loose sands had the smallest diameters at breast height.
    Źródło:
    Journal of Ecological Engineering; 2016, 17, 4; 83-90
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmienność wybranych cech makrostruktury i gęstości drewna świerkowego pochodzącego z drzewostanów gospodarczych i terenów pogórniczych
    Variability of selected features of macrostructure and density of spruce wood from commercial stands and post-mining areas
    Autorzy:
    Michalec, K.
    Wąsik, R.
    Pająk, M.
    Sikora, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/974056.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    tereny zdegradowane
    drzewostany gospodarcze
    makrostruktura
    sloje przyrostu rocznego
    leśnictwo
    tereny pogórnicze
    drzewostany świerkowe
    drewno świerkowe
    szerokość
    drewno późne
    gęstość drewna
    tree−rings width
    latewood share
    post−mining areas
    reclamation
    Opis:
    The aim of this work was to analyze the tree−ring width, the share of the latewood as well as the density of wood of trees growing in commercial and degraded stands. The research was carried out in the Brynek Forest District (southern Poland) in 3 commercial stands and in 4 degraded stands. For every study plot fifteen spruces were chosen and increment cores were sampled using the Pressler borer. Next, the surface of the cores was smoothed and the width of the annual rings was measured. Latewood zones were determined and the share of latewood was calculated. It was found that the average and minimum tree−ring width was the same in both commercial and degraded stands, while the maximum values were slightly and insignificantly different. In turn, the average share of latewood was higher in trees from commercial stands, but higher minimum and maximum values were recorded in stands on degraded sites. In this case, the differences turned to be statistically significant. The average density of wood was slightly lower in trees from degraded stands compared to wood from commercial stands (413 vs 418 kg/m3). Theminimum and maximum values were also higher in trees from commercial stands. However, this feature did not show a significant difference between analysed groups of stands. We found that despite such significant differences in the terrain formed during the production of zinc and lead ores, the wood of trees growing in these areas hardly shows any differences (except for the share of latewood) in comparison to wood from commercial stands.
    Źródło:
    Sylwan; 2020, 164, 01; 10-15
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comparison of the selected properties of macrostructure and density of wood of scots pines (Pinus sylvestris L.) growing on various mine soil substrates
    Autorzy:
    Wasik, R.
    Pajak, M.
    Michalec, K.
    Pietrzykowski, M.
    Wos, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/38755.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Badawczy Leśnictwa
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2018, 60, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość surowca sosnowego pochodzącego z terenów rekultywowanych dla leśnictwa na przykładzie zwałowiska odpadów po wydobyciu siarki w Piasecznie
    Quality of Scots pine wood on the lands reclaimed for forestry - spoil heap after the exploitation of sulphur in Piaseczno case study
    Autorzy:
    Pająk, K.
    Michalec, K.
    Wąsik, R.
    Kościelny, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989265.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    tereny przemyslowe
    Kopalnia Siarki Piaseczno
    zwalowiska odpadow
    zwalowiska zewnetrzne
    rekultywacja lesna
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    drewno sosnowe
    jakosc drewna
    quality
    raw wood
    reclamation
    wood defects
    pinus sylvestris
    Opis:
    The research was conducted on the external spoil heap of the 'Piaseczno' Sulphur Mine (southern Poland). This paper aimed to determine the quality of wood in 40−year−old Scots pine trees planted onto the external spoil heap of the mine, in the scope of forest reclamation, depending on the soil substrate and employed reclamation treatments. The investigations were carried out at one−are circular trial plots. A total number of 17 study plots was established, located on: Quaternary loose sands (PL), mixed Quaternary sands and Tertiary Krakowieckie clays (PI), and mixed Quaternary sands and Tertiary clays after an intense initial fertilisation (PIN). Measurements performed at the study plots included determination of diameter at breast height of every tree with a diameter ≥7 cm and height of every tree. We classified the wood of standing trees, including a specification of class or quality and dimension group of the butt−end part of the trunk, identifying types and variants of defects that determined the results of quality classification of raw wood. We found significant differences in trees dimensions between soil substrates. No significant difference was found for fertilised substrates, therefore it may be assumed that fertilising of more fertile soils was an unnecessary treatment. The quality of pine wood was mostly affected by knots and curvatures. An impact of knots on the results of wood classification increased with fertility of soil substrate. With regard to curvatures, the opposite trend was recorded. The frequency of occurrence of the above−mentioned defects was determined not only by the habitat type, but also by the manner of forest management. To reduce the frequency of occurrence of the defects in question in the reclaimed areas, an appropriate closure of stands should be maintained and adequate tending treatments should be performed competently and skilfully, as this is done in commercial stands.
    Źródło:
    Sylwan; 2016, 160, 04; 284-291
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość drewna topól wprowadzonych w ramach rekultywacji leśnej na zwałowisko skał towarzyszących wydobyciu węgla brunatnego
    Quality of wood of poplars used in the reclamation of spoil rock dump accompanying the lignite mining
    Autorzy:
    Pająk, M.
    Michalec, K.
    Wąsik, R.
    Urban, O.
    Vitek, P.
    Wos, B.
    Krzaklewski, W.
    Pietrzykowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/979559.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    tereny przemyslowe
    kopalnie wegla brunatnego
    zwalowiska zewnetrzne
    rekultywacja lesna
    topola
    drewno topolowe
    jakosc drewna
    wady drewna
    cultivar
    timber
    wood defects
    knots
    curvature
    Opis:
    The aim of the study was to determine quality of wood of 40−year old poplar cultivars introduced onto the external spoil dump of the Bełchatów Field and subjected to various reclamation systems. The research was carried out on the 1/78 trial plot located on the northern slope of the external spoil dump of the Bełchatów Field (central Poland). The dump was the result of the rock (predominantly sand) overlay storage accompanying lignite deposit. On the trial plot two blocks were established: one called ‘Humus’ where sandy sediments were covered with approximately 20−centimeter layer of fertile soil, and the other named ‘Piasek’ (sand) with only sandy sediments. To set up the experiment 9 poplar varieties were used (I−214, Robusta, Gerlica, H−194, Grandis, Oxford, Androscoggin, Geneva, H−275). Their wood quality was assessed in 2017, 40 years after their introduction on the spoil dump. The results indicate that poplars growing in the ‘Humus’ variant were characterised by higher volume in comparison to wood of poplars from the ‘Piasek’ variant. The latter however had a larger share of better wood quality classes (WB, WC). The results also showed that wood classification of all investigated varieties were significantly influenced by curvature in the case of the ‘Humus’ variant and knots in the ‘Piasek’ one. The influence of other wood defects such as galls, grain slope, multiple pith and knobs was insignificant. In order to obtain the higher volume of poplar raw material the reclamation treatments should be carried out on afforested areas with fertile outer layer whereas the better quality raw material can be obtained on less fertile sediments.
    Źródło:
    Sylwan; 2019, 163, 10; 855-861
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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