DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 9-10/2023 str. 42 <-- 42 --> PDF |
height as independent variables. The smallest variation is the form factor (f), which in this case was obtained as the ratio of the calculated volume of the merchantable wood of the trees in the previously described manner and the volume of the cylinder based on the breast diameter and height of the tree. The variation in the volume of trees belonging to the same diameter and height classes is the largest when it comes to the thinnest trees, that is, trees thinner than 25 cm, and the smallest when it comes to the trees thicker than 45 cm and higher than 22 m (Table 4 and Figure 2). The estimated coefficients of functions (a0–a5) are shown in table 5. All regression coefficients of all functions differ from zero at the 95% level (t - statistic). The function |