Vol: 42 Page: 17

Authors:
Katarzyna Kaźmierczak
Tomasz Najgrakowski

Title:
 Tree crown dimensions and its relationships with tree volume based on Scots pine (Pinus sylvestris L.)

Language: English

Keywords:
crown diameter
crown length
diameter at breast height
height
stepwise regression
Scots pine (Pinus sylvestris L.)

Summary:
The paper presents results of studies on a dependency between tree volume on basic measurements of the tree crown – diameter and length of crown and stem measurements – dbh (diameter at breast height), height, double bark thickness, period increment in breast height diameter. Regression equations were developed for the estimation of tree volume. Material for analyses comprises results of measurements of 50 pine coming from 50-year old stand. In view of the statistically significant dependence between volume of pine and measured tree traits the analysis of regression was conducted, assuming the investigated traits (diameter at breast height, height, double bark thickness, 5-year increment in breast height diameter, crown width and crown length) as explanatory variables. The backward stepwise regression was applied. Tree volume may be determined both on the basis of information on the height and diameter at breast height of a tree and crown diameter.

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