20.500.12556/RUL-173124 Zasnova poskusa redčenj bukovih sestojev v raziskovalnem objektu Pečice Design of a thinning experiment in European beech stands at the Pečice research site Klasično izbiralno redčenje je eno izmed najpomembnejših ukrepov v gozdarstvu v srednji Evropi in Sloveniji. Čeprav se izbiralno redčenje redno izvaja, ostaja ustrezna jakost redčenja še vedno relativno neraziskana tematika. V GGE Pišece smo v podgorskem bukovju v razvojni fazi mlajši drogovnjak postavili raziskovalni objekt Pečice. Objekt obsega 7 ploskev velikosti 30 × 30 m, na katerih smo popisali ničelno stanje. Vsem drevesom na ploskvah smo izmerili prsne premere, določili drevesno vrsto in socialni položaj, določenim drevesom smo izmerili še premer debla na panju. Po polni premerbi smo ploskve razdelili v obravnave A (ploskve z nižjo jakostjo redčenja), B (ploskve z višjo jakostjo redčenja) in C (kontrolna neredčena ploskev). Na ploskvah obravnave A (nizka jakost redčenja) smo v povprečju zmanjšali število dreves za 31,7 %, na ploskvah obravnave B (visoka jakost redčenja) pa za 37,8 %. Med obravnavami nismo zaznali statistično značilnih razlik v spremembi sestojne temeljnice, lesne zaloge in števila dreves. V nadaljevanju poskusa bo morda potrebno presojati o ponovni razporeditvi ploskev v obravnave. Classical selective thinning is one of the most important forest measures in the Central European forestry. Even though such thinning is regularly applied, the appropriate thinning intensity remains relatively unstudied. A permanent research site for a long-time monitoring was set up in the submontane European beech forests in the Forest Management Unit Pišece. It was set up in young pole-stage forest stands (approximately 15 years old) and consisted of 7 plots with dimensions of 30x30 m. In each plot we measured all trees with diameter at breast height (dbh) above or equal to 0.5 cm along with assessing the tree species and social status; for some trees also the diameter at the stump height (10 cm) was measured. After the plots were measured, we grouped them into 3 blocks (treatments), namely treatment A (plots with low-intensity thinning applied), treatment B (plots with high-intensity thinning applied) and treatment C (a control plot with no thinning applied). On average, on plots of treatment A the number of trees was reduced by 31,7% and of treatment B by 37,8 %. We found no statistically significant differences in the change of number of trees, stand basal area and growing stock. In the following years, we might have to consider rearrangement of plots into blocks to ensure representative results in the long term. bukev klasično izbiralno redčenje jakost redčenja izbranci konkurenti European beech classical selective thinning thinning intensity crop trees competitive trees true false false [L. Koritnik] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-13 08:16:05 2025-09-13 08:16:06 2025-11-04 04:07:15 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*242:630*17(043.2)=163.6 264010 249148675 50920.pdf 50920.pdf 1 80891BB43ACB8798CB9DBD9C4CA4E7A6 41569cfb1d8c8d96f85e10eb513eb25b0483cf9cdaa7bd92d1e62652b608ffd9 f7ac7591-9068-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=217293 Biotehniška fakulteta 0 0 0