20.500.12556/RUL-165408 Razvoj odraščajočih bukovih gozdov po snegolomu in sanaciji na Brežiškem območju Development of beech forests following snow-break and restoration in the Brežice area Leta 2024 je bila izvedena druga meritev na 12 raziskovalnih ploskvah v odraščajočih bukovih gozdovih na Brežiškem območju, ki so bile zasnovane leta 2014. Analizirani sestoji so glede na poškodovanost in sanacijo po snegolomu leta 2012 razdeljeni na tri stratume: nepoškodovani, poškodovani in nesanirani ter poškodovani in sanirani. Vsak stratum je predstavljen s štirimi ploskvami v velikosti 20 × 20 m. V prvem delu popisa je bila na ploskvah izvedena polna premerba vseh dreves nad 1,3 m višine, v drugem delu pa popis izbrancev ter njihovih parametrov. Na saniranih ploskvah se je ohranila večja pestrost drevesnih vrst (14) in ohranilo se je tudi več primešanih drevesnih vrst glede na prevladujočo bukev (43 %). Ugoden vpliv sanacije je ugotovljen pri spremembi dolžine krošnje, dimenzijskega razmerja, napredovanju v socialnem položaju ter poškodovanosti izbrancev. Presenetljiva je ugotovitev o zmanjšanju nagnjenosti izbrancev v obeh poškodovanih stratumih. Pri oceni kolektivne stabilnosti izbrancev je bila ugotovljena boljša povprečna ocena v saniranem stratumu, in sicer 3,2, medtem ko je bila ocena v nesaniranem 2,0, kar je verjetno posledica močnega odziva bukve z lateralno rastjo. To je vplivalo na medsebojno povezovanje krošenj in izboljšanje stabilnosti sestojev. Ob podobnih dogodkih v prihodnje predlagamo izvedbo sanacije in sočasno uporabo situacijske nege, saj bi se z manjšim številom izbrancev le tem bolj posvetili in tako prihranili na času ter posledično zmanjšali stroške sanacije. In 2024, we conducted a second measurement on 12 research plots in young beech forests in the Brežice area, which were initially established in 2014. The analyzed forest stands were divided into three strata based on damage and salvaging after the 2012 snow-break: undamaged, damaged and unsalvaged, and damaged and salvaged. Each stratum was represented by four research plots measuring 20 × 20 m. In the first part, a complete measurement of all trees above 1.3 m in height was carried out on the plots, and in the second part, the selected trees and their parameters were inventoried. The salvaged plots retained a greater diversity of tree species (14) and a higher proportion of admixed species relative to the dominant beech (43 %). The positive impact of salvaging was observed in changes in tree crown length, dimension ratio, social advancement, and damage levels of the selected trees. One unexpected finding was the decrease in the inclination of the selected trees in both damaged strata. However, when evaluating the collective stability of the selected trees, a better average score of 3.2 was found in the salvaged stratum, compared to 2.0 in the unsalvaged stratum, which was likely due to the strong lateral growth response of beech trees. This response influenced the interconnection of tree crowns and improved stand stability. For similar future events, we suggest implementing salvaging along with situationnal tending. Focusing on fewer selected trees would allow for more targeted attention, potentially saving time and reducing salvaging costs. snegolom odraščajoč bukov gozd vpliv sanacije kolektivna stabilnost snow-break young beech forest impact of salvaging collective stability true false false [A. Gmajnič] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-12-06 07:15:14 2024-12-06 07:15:23 2024-12-07 04:28:52 0000-00-00 00:00:00 2024 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*42:630*25(043.2)=163.6 254782 217948675 45343.pdf 45343.pdf 1 8CDEE8F375BBAFD954CEBB4BEBB6931D 603f9a8db2b2b0aca65ae5d1fbfa35a1967149768e3562a68cbf36bef1751d46 0a124f39-b399-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=196547 Biotehniška fakulteta 0 0 0