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Izdelava in preverba metodologije za določitev kmetij, ki naj bi lahko uveljavljale prednostno pravico pri podelitvi koncesije za izkoriščanje gozdov v lasti RS
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The distribution of beech and structural characteristics of beech stands in Slovenia
No full textwe analysed the distribution and structural characteristics of beech forests from databases of the forest sub-compartments (n= 70,474) and � a permanent sample
plots (n= 81,�42) of the Slovenian Forest Service (SFS). we described the distribution of beech with logistic regression model; we found that environmental
variables (bedrock, slope, mean annual temperature, site productivity, stoniness and rockiness of the site) and stand type have statistical significant influence on
horizontal distribution ob beech (p<0.001). Beech is most likely to be found in stands at moderate productivity sites on carbonate bedrock with higher slopes
and stoniness, in the zone of mean annual temperature from � °C to 10 °C. The density of beech stands is high; the average number of trees is �33 ha-1, the mean
stand basal area is 30.3 m2
ha-1. Beside this, high variability of stand densities within stand types is also observed. In Slovenia and Europe, further increase of
beech proportion in total growing stock and the expansion of beech forest area have been observed over the past few decades
Anatomy, cell wall structure and topochemistry of water-logged archaeological wood aged 5,200 and 4,500 years
No full textEvaluating the state of deterioration of water-logged archaeological wood is necessary in order to select treatments for its conservation and storage, particularly in the case of valuable archaeological artefacts. For this
purpose archaeological wood of ash (Fraxinus sp.) and oak (Quercus sp.) buried in water-logged conditions at prehistoric settlements on the Ljubljansko barje (Ljubljana moor), Slovenia, aged approx. 5,200 and 4,500 years, was investigated by means of light microscopy (LM), transmission electron microscopy (TEM) and cellular UV-microspectrophotometry (UMSP). LM and TEM revealed that the ash wood aged 5,200 years was the least preserved. The secondary walls of fibres, vessels and parenchyma cells were considerably thinner than in normal wood, indicating
distinct degradation. TEM and UMSP additionally revealed strong delignification of the remaining parts of the secondary walls of all cell types. The compound middle lamellae appeared structurally intact, but had lower UV-absorbance than normal wood of the same species. The
cell corners were topochemically unchanged, as shown by high analogue UV-absorbance. The UV-absorbance maxima at a wavelength of 278 nm corresponded to those of hardwood lignins. The oak heartwood was generally better preserved than the ash wood. Within each species, the 4,500-
year-old samples generally appeared better preserved than those 5,200 years old
Main patterns of variability in beech tree-ring chronologies from different sites in Slovenia and their relation to climate
No full textFourteen local tree-ring chronologies of beech (Fagus sylvatica L.) from different sites in Slovenia, elevations 300-1,415 m a.s.l., were constructed. Basic statistics of the chronologies (raw, standard and residual), climatic influence on tree growth, and growth variability among the sites are presented in the article. Dendroclimatological analysis showed that summer (particularly June) temperatures have negative and precipitation positive effect on tree-ring widths of beech on eleven sites in central, SE and SW Slovenia. The beech from highly elevated site in the Julian Alps above Tolmin (elevation 1200-1,450 m) showed positive response to summer temperatures. The whole variability in studied beech chronologies can be resumed in three sources of variation (principal components - PC): (PC_1) response of trees to June climate, (PC_2) altitude, and (PC_3) biogeographical differences