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    Wyświetlanie 1-5 z 5
    Tytuł:
    Dwanaście najgrubszych dębów szypułkowych (Quercus robur L.) Polski
    The twelve largest girthed Common Oak trees (Quercus robur L.) in Poland
    Autorzy:
    Zarzynski, P.
    Tomusiak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/888624.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Dendrologiczne
    Tematy:
    dab szypulkowy
    drzewa
    drzewa pomnikowe
    grubosc
    obwod pnia
    Polska
    Quercus robur
    Opis:
    Old Common Oaks (Quercus robur L.), often connected with myths and legends, are the largest trees occurring in Central Europe. The present paper describes twelve largest girthed specimens of the species growing in Poland. Authors, based on their own measurements and researches, prepared a ranking list of these unique trees and estimated their health condition. Moreover, their exact localizations in Mielno, Bąkowo, Piotrowice, Kadyny, Januszkowice, Zagnańsk, Rogalin, Nogat, Węglówka, Młock, Rudka and Karczmiska were described and most popular facts and stories from their history were given. The largest girthed Common Oak in Poland is “Napoleon” growing in Mielno (1042,5 cm in circumference), the second one is the oak from Bąkowo (1020 cm) and the third – “Chrobry” from Piotrowice. In total in Poland there are three specimens of Common Oaks with trunk circumference of more than 1000 cm, and five more with circumference between 900 and 1000 cm.
    Źródło:
    Rocznik Polskiego Towarzystwa Dendrologicznego; 2009, 57
    2080-4164
    2300-8326
    Pojawia się w:
    Rocznik Polskiego Towarzystwa Dendrologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ czyrenia sosnowego (Phellinus pini (Brot.) Pilat) na przyrosty radialne sosny zwyczajnej (Pinus sylvestris L.)
    Effect of Phellinus pini (Brot.) Pilat occurrence on the radial growth of Pinus sylvestris L.
    Autorzy:
    Tomusiak, R.
    Zarzyński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/980244.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    grzyby patogeniczne
    czyren sosnowy
    Phellinus pini
    przyrost drzew
    przyrosty radialne
    red ring rot
    white pocket rot
    scots pine
    tree rings
    Opis:
    Scots pine is the most common tree species in Poland with the share in the species structure of Polish forests exceeding 58%. The most dangerous pathogen of this species is Phellinus pini (Brot.) Pilát), which causes the white pocket rot (also called red ring rot) of pine heartwood. It is estimated that as a result of the fungus’s activity, about 8% of annually harvested pine stems is damaged and worthless. As the Ph. pini damages only heartwood, it is often recognized that its occurrence has no influence on the tree’s physiology. As it is still unknown whether the presence of this fungus also does not affect the cambium responsible for the radial growth. We carried out studies in Scots pine stands located in the Radziwiłłów Forest District (central Poland). We investigated trees from 5th and 7th age classes (Biała Góra and Budy Stare forests, respectively). A total of 60 trees were sampled (30 per site). Half of them were specimens showing advanced symptoms of sickness, while the others were healthy specimens with no evidence of infection. From each tree we took one increment core and measured the tree−ring widths. Average tree−ring width was in case of healthy trees significantly higher than for sick trees. The research showed a significant, even of a dozen percent, reduction in the annual increment of infected trees in relation to healthy trees growing on the same site. Presumably, unidentified chemicals secreted to the cambium by the growing mycelium of Ph. pini may be responsible for this. It also seems that this relationship is progressing with the growing age of tree stands and is particularly visible in old stands, for example in reserves. Thus, Ph. pini could be one of the factors limiting the natural age of pine trees and accelerating their dieback. We also found that the growth of trees affected by the disease is influenced by a factor other than climatic, disturbing the natural rhythm of their radial increments. This factor is most likely the presence of mycelium of Ph. pini in the wood.
    Źródło:
    Sylwan; 2019, 163, 07; 576-583
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    O Baublisie raz jeszcze...
    About Baublis once again...
    Autorzy:
    Tomusiak, R.
    Zarzyński, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009653.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    pomniki przyrody
    dab Baublis
    historia
    Litwa
    lesnictwo
    drzewa lesne
    'baublis'
    common oak
    monumental tree
    lithuania
    Opis:
    This paper is a kind of addition to four other articles about famous Lithuanian oak−tree called 'Baublis' published in Sylwan, especially those from 1827 and 2002. The first one, written by Dionizy Paszkiewicz was a description of its cut down in 1812. The latter was a scientific estimation of 'Baublis'es' main parameters (trunk circumference, height, volume, age, etc.) basing on facts from the previous article. However, some new data about this tree were found basing on the parameters of unique building made from its trunk that had survived on Lithuania since the beginning of 1880s. The new estimations of this famous oak−tree size are presented.
    Źródło:
    Sylwan; 2009, 153, 12; 847-851
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dokładność sposobów określania miąższości dłużyc bez kory według normy PN-D-95000:2002 na przykładzie sosny zwyczajnej (Pinus sylvestris L.) z terenu Nadleśnictwa Płaska
    Accuracy of methods to determine under bark volume of logs according to the PN-D-95000:2002 standard – a case study of Scots pine (Pinus sylvestris L.) from the Płaska Forest District
    Autorzy:
    Polkowski, K.
    Zarzyński, P.
    Tomusiak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/985738.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    sosna zwyczajna
    Pinus sylvestris
    drewno sosnowe
    dluzyce
    miazszosc drewna
    miazszosc dluzyc bez kory
    pomiary
    metody obliczen
    polskie normy
    norma PN-D-95000:2002
    bark thickness
    bark reduction
    volume of large−sized wood
    under−bark volume
    Opis:
    The State Forests, National Forest Holding operates on the principle of financial independence, and the sale of wood is the primary source of income of the institution. Raw wood is sold with the bark, although the registry applies to the wood without bark. It was hypothesized that the method of bark volume reduction may have a significant impact on the registered volume. The material collected in the Płaska Forest District was used to assess the impact of method of bark volume reduction presented in the PN−D−95000:2002 standard on the volume of Scots pine logs in thinned and harvest stands growing on fresh coniferous forest habitat. Analysis of the accuracy and precision of each method were carried out on the basis of sectional measurements of 180 logs (90 per stand type). Four methods were compared: table deduction depending on the diameter of the stem (method 1), measurement of bark thickness with manual bark gauge (method 2a), mechanical removal of the bark using a spokeshave at the place of measurement (method 2b), and calculation of the log volume with Huber formula and subsequent subtraction of the bark volume determined based on special ratio (method 3). All methods caused negative systematic error, and thus have a constant tendency to underestimate the volume of Scots pine logs. At the same time, the underestimated log volume varies depending on the method used. To the greatest extent it is lowered using method 1, as it differs significantly from the other methods. Slightly smaller errors are characterized by the method 2a, for which the average error rate also differs from the other methods. The smallest errors are provided by methods 2b and 3, between which we found no significant differences. Analyses indicate that the preferred method of determining the volume inside bark is a mechanical removing of bark, measuring the diameter without bark and calculation of the volume with Huber formula. It is also noteworthy to take into account the deduction percentage of bark in the logs of large−sized wood.
    Źródło:
    Sylwan; 2019, 163, 06; 460-468
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena wybranych cech dendrometrycznych Baublisa - najslynniejszego debu w literaturze polskiej
    Autorzy:
    Szczepkowski, A.
    Tomusiak, R.
    Zarzynski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/817360.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    dendrometria
    dab Baublis
    wysokosc
    historia
    wiek drzew
    Quercus robur
    grubosc
    lesnictwo
    dab szypulkowy
    miazszosc drzew
    drzewa lesne
    Źródło:
    Sylwan; 2002, 146, 11; 73-81
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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