20.500.12556/RUL-188144 Ocena skladnosti inventurnih podatkov o manjšinskih drevesnih vrstah z dejanskim stanjem v sestojih Consistency evaluation between inventory data on minority tree species and actual state in forest stands V diplomski nalogi smo primerjali podatke o prisotnosti drevesnih vrst v javno dostopnih evidencah Zavoda za gozdove Slovenije z dejanskim stanjem na območju Tivolskega hriba v Ljubljani. Na 40,5 ha velikem območju smo s terenskim popisom evidentirali drevesne vrste ter jim izmerili prsni premer, ocenili kakovost in vitalnost ter zabeležili lokacijo. Prostorsko razporeditev smo analizirali v programu QGIS. Evidentirali smo 193 dreves 21 drevesnih vrst, ki so zastopane v manjšem deležu, oziroma 4,8 drevesa/ha. V evidencah ZGS je bilo navedenih 13 drevesnih vrst, s terenskim popisom pa smo skupno ugotovili 31 drevesnih vrst. S tem smo potrdili hipotezo, da je dejanska vrstna pestrost večja od prikazane v evidencah. Skupni volumen vrst z manjšim deležem (manjšinskih vrst) je znašal 123 m³ oziroma 3,04 m³/ha, kar predstavlja 0,9 % lesne zaloge. Povprečni prsni premer je znašal 21 cm, 78,8 % dreves pa je bilo v debelinskem razredu 10–30 cm. Povprečna ocena kakovosti je bila 3,3, zato smo hipotezo o prevladi tankega drevja slabše kakovosti potrdili le delno. Povprečna ocena vitalnosti je bila 2,5, kar kaže na ugodno vitalnost. V 20-metrskem pasu ob cestah in poteh je raslo 59 % analiziranih dreves. In this thesis, we compared data on the presence of tree species in publicly available databases of Slovenia Forest Service with actual situation in the Tivolski hrib forest area in Ljubljana. In the 40.5 ha study area, tree species were recorded during a field survey. For each tree, diameter at breast height was measured, quality and vitality were assessed, and its location was recorded. Spatial distribution was analysed using QGIS. A total of 193 trees belonging to 21 tree species with minor proportions in the growing stock were recorded, corresponding to 4.8 trees/ha. The Slovenia Forest Service databases listed 13 tree species, while the field survey identified a total of 31 tree species. This confirmed the hypothesis that actual tree species diversity is greater than shown in the inventory data. The total volume of tree species with minor proportions was 123 m³ or 3.04 m³/ha, representing 0.9% of the total growing stock. The mean diameter at breast height was 21 cm, and 78.8% of the trees were in the 10–30 cm diameter class. The mean quality score was 3.3. The hypothesis that thin trees of poorer quality prevail was only partly confirmed. The mean vitality score was 2.5, indicating favourable vitality. Overall, 59% of the analysed trees were located within 20 m of roads and paths. manjšinske drevesne vrste gozdna inventura vrstna pestrost prostorska razporeditev Tivolski hrib minority tree species forest inventory tree species diversity spatial distribution Tivolski hrib true false false [L. Luzar] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-19 07:17:17 2026-09-19 07:17:21 2026-09-24 12:19:24 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*5:630*17(043.2) 290049 292364291 61310.pdf 61310.pdf 1 4E6F1AF19A56987B2DA2FB3E511A0E3E 614b0adc065375db130e67d45773e592a3ae72aad07b6280725069fa84ed7b71 5a0255fb-b3e9-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=248172 Biotehniška fakulteta 0 0 0