Silvarum Colendarum Ratio et Industria Lignaria (Leśnictwo i Drzewnictwo) 13 (1) 2014
Abstracts
Title
INFLUENCE OF CUTTING RESIDUES MANAGEMENT METHOD AND SOIL CULTIVATION METHOD ON THE SURVIVAL RATE OF 3-YEAR-OLD SCOTS PINE (PINUS SYLVESTRIS L.) PLANTATION
Autor
Jakub Jakubowski, Roman Gornowicz, Dariusz Jendernal
This paper presents the results of studies on the influence of clear-cut site management on survival rate of 3-year-old Scots pine saplings, conducted in the Forest District Bierzwnik in September 2011. Statistical analysis showed, that only the soil cultivation method significantly influences the survival rate on the studied Scots pine plantation. No statistically significant influence of cutting residues management or combined methods of residues management and various variants of soil cultivation was found.
TRANSLOCATION OF THREATENED LOCALITIES OF EASTERN EGGAR (ERIOGASTER CATAX L., 1758) AS A METHOD OF ACTIVE SPECIES PROTECTION BASED ON LOCALITIES IN SOUTHERN WIELKOPOLSKA
Autor
Robert Kuźmiński, Adam Malkiewicz, Andrzej Mazur
Pages
15–23
Keywords
Eriogaster catax, Natura 2000, inventory of insects, translocation
Abstract
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The aim of the study was to inventory potential habitats and localities of Eastern eggar Eriogaster catax (Linnaeus, 1758) on the route of expressway S5 Poznań-Wrocław at the Kaczkowo-Korzeńsko section. Insects from documented localities overlapping with the planned expressway were translocated to new locations, guaranteeing development and existence of this protected insect species.
DISCRIMINATING METHODS IN THE ASSESSMENT OF FINANCIAL SITUATION IN TIMBER INDUSTRY ENTERPRISES
Autor
Tomasz Noga, Krzysztof Adamowicz, Jakub Jakubowski
Pages
25–35
Keywords
timber sector, bankruptcy, early warning models, economics of forestry
Abstract
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The content of the article submits an assessment of effectiveness of predictive constructed models Hołda, Gajdki and Stosa, Prusaka and Poznański. The research material consisted only of financial economic units pieces of information focused in the wood – furniture sector. The period of analysis covered the years from 2003 up to 2012. The main method applied in this investigation was a multivariate discriminant analysis which had been used for three years before bankruptcy. To evaluate the effectiveness of the analysed models there was a need to avail both, the matrix classification of enterprises and the odds ratio. As the result of the analysis the best effectiveness was achieved applying the model of Hołda.
DIFFERENTIATION OF TREE DIAMETERS AT STRIP ROADS IN A YOUNG PINE TREE-STAND
Autor
Włodzimierz Stempski, Krzysztof Jabłoński
Pages
37–46
Keywords
strip roads, thinning, diameter at breast height (DBH)
Abstract
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The investigation was conducted in a 32-year-old pine stand, growing on a fresh coniferous site in western Poland. The strip roads in the stand had been designed and cut along tree rows 5 years prior to the investigation. The analysis focused on trees growing at 12 strip roads, in 3-meter-wide stripes on both sides of the strip roads and in control zones, half-way between each two neighbouring strip roads. The trees growing on the stripes along the strip roads were divided into three zones corresponding to tree rows. The first zone (I) was formed by trees growing in the row directly at the strip roads, while the zones two (zone II) and three (zone III) were formed by trees growing in the second and third rows of trees away from the strip roads, respectively, on both sides of the strip roads. The average distances of the zones two and three from the strip roads were 1.5 and 3 m, respectively. The diameters at breast height (DBH) of all the trees growing in the respective zones were measured. Moreover, the widths of the strip roads were measured, which resulted in dividing the strip roads into two groups: the wider strip roads (average width 3.6 m) and the narrower ones (average width 2.9 m). The statistical analysis showed significant differences in DBH values between the analysed zones, for nine of the strip roads. Both in the case of the wider strip roads, as well as in the case of the narrower ones, the trees growing directly along the strip roads were usually thicker than the more distant trees. A statistically significant difference between the DBH values of trees from zone I and II was found for one strip road. In most cases the trees from zone I were statistically thicker than the trees growing in the control zone.