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1

Comparative analysis of the quality of timber of Norway spruce (Picea abies L. Karst.) from two ranges of this species in Poland in relation to age, stand quality class and site type of forest

100%
Michalec K.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
|
2008
|
tom 11
|
nr 1
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Juvenile wood volume and its proportion to stem volume vs. selected biometric features of Scots pine [Pinus sylvestris L.] trees

100%
Pazdrowski W., Tomczak A., Kupczyk G., Jelonek T.
Acta Societatis Botanicorum Poloniae
|
2005
|
tom 74
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nr 4
The aim of the study was to determine whether there is a correlation between breast height diameter, tree height and stem total volume of Scots pines, on the one hand, and volume and proportion of juvenile wood, on the other. The investigations comprised pure pine stands of the IInd, IIIrd, IVth and Vth age classes developed in conditions of fresh mixed coniferous forest. A distinct curvilinear correlation was found between volume and proportion of juvenile wood in tree stems and breast height diameter, height and stem total volume. Because of high values of determination coefficients (R2), which characterised the above-mentioned correlations, it seems appropriate to use these regularities to assess the quality of the timber raw material regarding the proportions of its volume and juvenile wood in stems of Scots pine trees.
3

Coniferous mixed mesic forest as an example of divergence between a forest site type and a unit of potential natural vegetation

100%
Rutkowski P., Maciejewska-Rutkowska I.
Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu
|
2004
|
tom 69
4

Percentage share of sapwood and heartwood in stems of European larch (Larix decidua Mill.) representing II and III class of age grown in different forest site types, representing main tree stand at Kraft biosocial classification

80%
Nawrot M., Pazdrowski W., Szymanski M.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
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2008
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tom 07
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nr 1
The study is an attempt to determine share of sapwood and heartwood in stems of European larch trees from II and III class of age, grown in conditions of fresh coniferous mixed forest site (BMśw), fresh forest mixed site (LMśw), fresh forest site (Lśw). The highest hare of heartwood was observed in stems of European larch in conditions of fresh forest site Lśw, and the smallest in conditions of fresh coniferous mixed forest site (BMśw). Differences were also observed within the investigated classes of age, and higher share of heartwood observed in III class of age. The smallest share of heartwood characterized codominant trees and the highest dominant trees (from main tree stand in Kraft classification).
5

Proba zastosowania indeksu trofizmu gleb lesnych do diagnozy siedlisk nizinnych i wyzynnych

80%
Brozek S., Lasota J., Zwydak M.
Acta Agraria et Silvestria. Series Silvestris
|
2001
|
tom 39
35-46
The paper presents the possibility of soil trophism index application in forest site classification. It was proved that the proposed soil trophism index makes the forest site classification more precise and objective. It is a new way of forest site classifiaction based on soil skeleton, silt and clay parts percentage share, reaction, base exchangeable cation sum and the organic matter decomposition rate.
6

Plant communities of Scots pine stands in the south-eastern part of the Bory Dolnoslaskie forest (SW Poland)

80%
Stefanska-Krzaczek E.
Acta Botanica Silesiaca. Monographiae
|
2011
|
tom 06
7

Radial variability of the strength quality coefficient of Scots pine (Pinus sylvestris L.) wood in relation to the tree biosocial position in the stand

80%
Jakubowski M., Tomczak A., Jelonek T., Pazdrowski W.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
|
2005
|
tom 08
|
nr 3
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Potential for genetic conversion of Norway spruce Picea abies (L.) Karst. stands and methods for preserving gene resources of Istebna race in Silesian Beskid Mts

80%
Sabor J.
Dendrobiology
|
2004
|
tom 51 Supplement
The forests of the Silesian Beskid Mts have a specific composition with a marked dominance of Norway spruce. Although spruce stands are seriously threatened, some of them, such as those of Istebna race, show excellent genetic value. The work stresses the need for the conversion of spruce stands in the Silesian Beskid range on the basis of population genetics and describes the principles of such conversion.
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