DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 1-2/2018 str. 56     <-- 56 -->        PDF

Using the Z test the difference between the average values of the most of studied estimation elements were shown as statistically significant or it is near the threshold of statistical significance. Exception is again Lorey’s mean height (HL) (Tab. 5).
The comparison of stand estimation elements of the virgin forests in Serbia (Tab. 5) with the studied virgin forests in Central, Eastern and Southern Europe on the most productive sites (Tab. 6) showed that the biggest differences were in the number of trees per hectare and the stand quadratic mean diameter. The number of trees in the stands in Serbia ranged from 123 to 201, while in the stands in Central, Eastern and Southern Europe it ranged between 203 and 390. This analysis should take into account that the lower limit of diameter at breast height was not the same in all studies, which affected the total number of trees (in our study 10 cm аnd in majority of other studies 5 or 7 cm). The value of the lower limit of diameter at breast height in our study somewhat increased the values of Stand quadratic mean diameter. The stand quadratic mean diameter in Serbia was from 50.2 to 61.1 cm while in the stands in Central, Eastern and Southern Europe it ranged from 37.7 to 49.2 cm. Basal area and volume per hectare were approximately the same. In 86 European beech forest reserves across Europe the mean value of deadwood volume was found to be 130 m3 ha-1 and it varied from almost zero to 550 m3 ha-1 (Christensen et al. 2005). In our research, we found that in Danilova kosa, Vinatovača and Kukavica the volume of dead wood was about 115 m3 ha-1 (Tab. 5). In our opinion, small volumes of dead wood in Kukavica virgin forest is due to