20.500.12556/RUL-173891 Spremembe gozdnih sestojev in poškodovanost dreves zaradi vetroloma v letu 2023 v gozdnogospodarski enoti Tolmin Changes in forest stands and damage on trees after windthrow in 2023 in the forest management unit Tolmin V letu 2023 je gozdove v gozdnogospodarski enoti Tolmin prizadel močan vetrolom, ki je povzročil obsežne poškodbe gozdnih sestojev. Namen diplomskega dela je bil analizirati i) poškodovanost in mortaliteto posameznih drevesnih vrst, ii) vpliv rastiščnih dejavnikov na poškodbe dreves in iii) analizirati spremembe v strukturi gozdnih sestojev zaradi vpliva vetroloma. V ta namen je bil opravljen ponovni popis 30 stalnih vzorčnih ploskev (SVP), ki so bile nazadnje izmerjene leta 2021. Poškodbe so bile ocenjene na podlagi izdelanih šifrantov, osredotočeni smo bili na vzroke in vrste poškodb. Najbolj poškodovane drevesne vrste so bile veliki jesen, maklen ter lipa in lipovec. Najpogostejša vrsta poškodbe, ki se je pojavljala zaradi vetroloma je bilo izruvano drevo. Poškodbe so se najpogosteje pojavljale v pasu 200-400 m nadmorske višine ter na jugozahodnih in južnih ekspozicijah. V obdobju 2021-2024 smo zabeležili večjo stopnjo mortalitete kot v obdobju 2011-2021, kar indicira negativen vpliv vetroloma in drugih okoljskih dejavnikov. Znatno se je znižala lesna zaloga gozdnih sestojev, kar dodatno potrjuje ugotovitve iz analize mortalitete. Ugotovljeni vzorci poškodb in mortalitete predstavljajo izhodišče za načrtovanje prilagoditvenega gospodarjenja na vetrovno izpostavljenih območjih. In 2023, forests in the Forest Management Unit Tolmin were severely affected by a windthrow, which caused extensive damage to forest stands. This thesis aimed to analyse i) the extent of damage and mortality to individual tree species, ii) the influence of site factors on damage occurrence, and iii) changes in forest structure due to windthrow. We conducted a re-inventory of 30 permanent sample plots, previously measured in 2021. A custom classification system was developed to categorize the type and cause of tree damage. The most affected tree species were European ash, field maple, and lime, and the most frequent type of damage was uprooting. Damaged trees prevailed between 200 and 400 m of elevation and on southwestern and southern slopes. A notable increase in tree mortality was observed when comparing the periods 2011– 2021 and 2021–2024, highlighting the impact of windthrow and other environmental factors. A significant decline in stand volume was recorded, supporting findings on the amplified tree mortality. The identified patterns of tree damage and mortality provide a basis for adaptive forest management in the wind-exposed areas. vetrolom stalne vzorčne ploskve ujme GGE Tolmin stopnja poškodovanosti windthrow permanent samplings plots natural disasters forest managment unit Tolmin damage rate true false false [J. Černilogar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-25 07:16:45 2025-09-25 07:16:49 2025-11-15 03:42:56 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*42(043.2)=163.6 266191 250381059 51492.pdf 51492.pdf 1 7BD08E7FD4E493981B70E2DE26CF2FB9 ebaaf22713c2912d2a4fbb724d02a4a21948491833d12496268bfe6746de6348 a6555c3b-99ce-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218579 Biotehniška fakulteta 0 0 0