DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/2020 str. 24 <-- 24 --> PDF |
and at age 16 years it is skewed to the left and slightly platycurtic (Table 2). Height distribution, expressed by grouping heights into 3 m wide height classes has a reverse J-shaped distribution at age 11 years and normal unimodal shape at age 16 years (Figure 2). Height curves and h/DBH ratio – Visinske krivulje i stupanj vitkosti Obtained measure of fit of the height curves show that 55% of the variability of tree heights can be attributed to their corresponding diameters at age 11 years. This relationship is less expressed at age 16 years (Table 3, Figure 3). The slenderness coefficient expressed as h/DBH ratio points to static stability of the trees. At age 11 years, h/DBH ratio was 38–79 (54 on average) and 38–79 (43 on average) at age 16 years. Accordingly, as the h/DBH ratio decreases, its variability slightly increases and the distribution keeps its right assymetry as kurtosis shifts from platykurtic at age 11 to mesokurtic shape at age 16 years (Table 4). The relationship between h/DBH ratio and corresponding diameters at breast height has a reverse J-shaped distribution that was successfully fitted with power function (Figure 3). |