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1

Analysis of the quality of pine sawmill wood set against tree biosocial classes in the tree stand

100%
Jelonek T., Pazdrowski W., Tomczak A., Stypula I.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2006
|
tom 58
2

Selected biometrical traits of Scots pine stems developed in conditions of the fresh coniferous forest as the basis for the evaluation of mature wood

100%
Tomczak A., Pazdrowski W., Jelonek T., Stypula I.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2006
|
tom 59
3

Selected biometric traits of Scots pine tree stems developed in conditions of the fresh coniferous forest as the basis of the evaluation of juvenile wood volume

100%
Tomczak A., Pazdrowski W., Jelonek T., Stypula I.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2006
|
tom 59
4

Dynamics of the heartwood formation process and the share of heartwood in stems of Douglas fir (Pseudotsuga menziesii FRANCO) and European larch (Larix decidua MILL.) as exemplified by the experimental surface of the Babimost Forest Division

100%
Pazdrowski W., Tomczak A., Jelonek T., Stypula I.
Annals of Warsaw Agricultural University. Forestry and Wood Technology
|
2005
|
tom 57
Dynamics of the heartwood formation process and the share of heartwood in stems of Douglas fir (Pseudotsuga menziesii FRANCOJ and European larch (Larix decidua MILL.J as exemplified by the experimental surface of the Babimost Forest Division The study makes an attempt to determine the share of heartwood in stems of Douglas fir (Pseudotsuga menziesii FRANCO) and European larch (Larix decidua MILL.) which developed in conditions of the fresh mixed broadleaved forest site type. In addition, an attempt was also made to determine and compare the dynamics of the heartwood building processes in both examined tree species. On the basis of the performed analyses, it was found that the European larch was characterised by a higher dynamics of heartwood formation. The percentage of heartwood in the stems of the examined trees ranged from 49% in Douglas fir to 66% in larch.
5

Radial and axial variability of the proportion of sapwood and heartwood in stems of Scots pine trees (Pinus sylvestris L.) developed in conditions of former farmlands and typical forest sites

100%
Jelonek T., Pazdrowski W., Tomczak A., Stypula I.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
|
2006
|
tom 09
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nr 3
6
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Vertical variability of selected macrostructural properties of juvenile wood organization in trunks of Scots pine [Pinus sylvestris L.] trees

100%
Tomczak A., Pazdrowski W., Jelonek T., Stypula I.
Acta Societatis Botanicorum Poloniae
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2007
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tom 76
|
nr 1
The study makes an attempt to analyse the width of annual rings, the width of the latewood zone and the proportion of the latewood within juvenile wood along trunks of Scots pine (Pinus sylvestris L.) trees and to verify the hypothesis about the heterogeneous properties of juvenile wood in a single trunk. It was found that the above-mentioned macrostructural elements of wood structure showed a curvilinear correlation with the height of measurement points along the tree trunk. As the distance from the base of trunk increased, the width of the annual ring and the width of the latewood zone decreased, while the proportion of the latewood increased. These types of changes can affect positively physical and mechanical properties of wood tissue. It can be assumed that there is a mechanism which modifies properties of juvenile wood causing axial diversification of the analysed type of wood tissue. It is probable that axial heterogeneity results in advantageous changes in the mechanics of the tree trunk.
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