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Wyświetlanie 1-5 z 5
Tytuł:
Lokalne wzorce przyrostowe daglezji zielonej (Pseudotsuga menziesii (Mirb.) Franco) w Polsce
Autorzy:
Feliksik, E.
Wilczyński, S.
Powiązania:
https://bibliotekanauki.pl/articles/1024078.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
przyrosty radialne
dendrochronologia
Pseudotsuga menziesii
Polska
daglezja zielona
lesnictwo
wzorce przyrostowe
drzewa lesne
pseudotsuga menziesii
poland
site chronologies
tree−rings
Opis:
The paper describes a construction and characteristic of site tree−ring chronologies and site indexed chronologies of 50 partial populations od Douglas fir in Poland.
Źródło:
Sylwan; 2004, 148, 12; 3-13
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ żywicowania na przyrost radialny sosny zwyczajnej (Pinus sylvestris L.) na przykładzie drzewostanu w Nadleśnictwie Lidzbark
Effect of resin-tapping on the radial increment of Scots pine (Pinus sylvestris L.) - case study of a stand from Lidzbark Forest District
Autorzy:
Magnuszewski, M.
Tomusiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/1318415.pdf
Data publikacji:
2013
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewa lesne
dendrochronologia
sosna zwyczajna
Pinus sylvestris
przyrost drzew
przyrosty radialne
zywicowanie
Nadlesnictwo Lidzbark
Scots pine
tree rings
resin-tapping
dendrochronology
Opis:
The study makes an attempt to evaluate the effect of resin-tapping on the radial increment of Scots pine (Pinus sylvestris L.). Increment cores were taken from two groups of trees: resin-tapped trees and normal trees growing in a 148–year-old pine stand in the Lidzbark Forest District. The cores were taken with the Pressler increment borer from two heights on the tree trunk: 1.30 m and 3.30 m. Using dendrochronological methods, real chronologies were built for each of the four analysed groups of cores. The value and variability of increments for each group were investigated in 20 and 40 year time periods, before and after the start of resin-tapping. In next step, the chronologies were compared and their coefficients of conformity were calculated. As a result, we can state that the radial increments were larger are at 1.3 m height after resin-tapping than before resin-tapping. There was also significant effect of resintapping on radial growth at the height 3.3 m, above the resin-tapping face.
Źródło:
Leśne Prace Badawcze; 2013, 74, 3; 273-280
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
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:
Lata wskaźnikowe świerka pospolitego w Beskidach Zachodnich
Pointer years of Norway spruce in the Western Beskidy Mountains (southern Poland)
Autorzy:
Wilczyński, S.
Szymański, N.
Powiązania:
https://bibliotekanauki.pl/articles/991365.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
gory
Beskidy Zachodnie
drzewa lesne
swierk pospolity
przyrost drzew
sloje przyrostu rocznego
przyrost grubosci
czynniki klimatyczne
lata wskaznikowe
tree rings
pointer years
norway spruce
western beskidy mountains
altitudinal zone
Opis:
The frequency of site and zonal pointer years in Norway spruce in two altitudinal zones (500−900 m and 900−1370 m a.s.l.) in the Western Beskidy Mountains was analysed. In total, 32 tree stands were studied – 16 in each zone. In both zones number of negative site pointer years increased along with increase of number of positive site pointer years. Above 900 m a. s. l. number of site pointer years increased along with the altitude, while below 900 m a.s.l. their number decreased along with the altitude. We found no common pointer years for all 32 populations. In lower zone, short winter, early and very warm spring or high precipitation in June and July in a given year caused negative pointer years. In the upper one positive pointer years occurred after the warm autumn and in years with the warm growing season.
Źródło:
Sylwan; 2014, 158, 12; 883-892
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jakość drewna sosny zwyczajnej (Pinus sylvestris L.) I. Charakterystyka wybranych cech i właściwości drewna wpływających na jego jakość
Quality of Scots pine [Pinus sylvestris L.] wood. Part I. Characteristics of selected wood traits and properties affecting its quality
Autorzy:
Tomczak, A.
Pazdrowski, W.
Jelonek, T.
Grzywiński, W.
Powiązania:
https://bibliotekanauki.pl/articles/1012211.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
jakosc
Pinus sylvestris
drewno pozne
drewno sosnowe
seki
drewno wczesne
gestosc drewna
drewno mlodociane
sloje przyrostu rocznego
sosna zwyczajna
drzewa lesne
wady drewna
wood quality
scots pine
knots
wood density
tree rings
latewood
juvenile wood
Opis:
The study presents the synthetic characteristic of selected wood tissue traits and properties (knots, tree rings, the proportion of latewood, juvenile wood, wood density, dimensions of anatomical elements, cell wall structure), which play significant role in modifications of wood quality. At individual stage of the raw material–product cycle the term "quality" may be interpreted differently, but characteristics determining it remain unchanged. Quality depends on the natural traits and properties of wood.
Źródło:
Sylwan; 2009, 153, 06; 363-372
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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