Tom: 45 Strona: 15

Autorzy:
Katarzyna Kaźmierczak
Tomasz Najgrakowski

Tytuł:
Correlations among chosen traits of standing trees in 35-years old pine stands

Język: Angielski

Słowa kluczowe:
crown diameter
crown length
diameter at breast height
height
degree of crown spread
crown length
relative length of the crown
stepwise regression
Scots pine (Pinus sylvestris L.)

Streszczenie:
The paper presents results of studies on dependency between chosen stem measurements - DBH (diameter at breast height), height, increment in breast height diameter, slenderness, current increment of tree volume and as tree crown dimensions - diameter, length and relative length of the crown, degree of crown spread. Material for analysis comprises results of measurements of 50 pines sampled in 35-year old stand. In view of the statistically significant dependence between volume increment of pine and measured tree traits the analysis of regression was conducted, assuming the investigated traits as explanatory variables. Regression equations were developed for the estimation of current tree volume increment. The backward stepwise regression was applied.

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