Tujerodne drevesne vrste v urbanem gozdu Krajinskega parka Tivoli, Rožnik in Šišenski hrib

Cholkova, Magdalena (author), Roženbergar, Dušan (mentor)

V diplomski nalogi smo raziskovali tujerodne drevesne vrste (TDV), ki rade naseljujejo degradirana območja, območja, prizadeta zaradi različnih motenj, ter območja, kjer je močno prisoten človeški vpliv. Izbrali smo urbane gozdove Krajinskega parka Tivoli, Rožnik in Šišenski hrib. Cilj naloge je bil ugotoviti, katere TDV so prisotne na določenih lokacijah. Želeli smo ugotoviti, kakšno je stanje v sestoju, ter preveriti, ali se te vrste pomlajujejo ali ne. Preučevali smo njihovo pojavljanje v različnih plasteh (spodnja, srednja in zgornja plast), svetlobne razmere v teh slojih ter pomlajevanje. Nazadnje smo ugotavljali, kakšna je potencialna invazivnost posamezne TDV in navedli morebitne gozdnogojitvene ukrepe, kjer smo ocenili, da je to potrebno. Meritve so potekale na terenu, analizo zbranih podatkov pa smo izvajali za računalnikom. Delež v mlajših razvojnih fazah je na odprtih delih sestoja znatno večji kot na območjih z več zastora. To še posebej velja za svetloljubne vrste, kot so robinija, navadni divji kostanj in črni oreh. Manj svetloljubne vrste, kot sta rdeči hrast in zeleni bor, se pomlajujejo tudi pod zastorom. TDV, ki kažejo znake potencialne invazivnosti, sta robinija in rdeči hrast. Ostale opazovane TDV niso kazale znakov potencialne invazivnosti na našem raziskovalnem območju ali pa zanje nismo uspeli pridobiti dovolj podatkov, da bi lahko sklepali o njihovi invazivnosti.

• Language: Slovenian
• Keywords: tujerodne drevesne vrste, urbani gozd, invazivne vrste
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [M. Cholkova]
• Year: 2021
• PID: 20.500.12556/RUL-130936
• UDC: 630*18(497.4Ljubljana)(043.2)=163.6
• COBISS.SI-ID: 79150851
• Publication date in RUL: 19.09.2021

CHOLKOVA, Magdalena, 2021, Tujerodne drevesne vrste v urbanem gozdu Krajinskega parka Tivoli, Rožnik in Šišenski hrib [online]. Bachelor’s thesis. Ljubljana : M. Cholkova. [Accessed 15 March 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=130936

Secondary language

• Language: English
• Title: Non-native tree species in urban forests of the Tivoli, Rožnik and Šišenski hrib Landscape park

Abstract

This diploma thesis focuses on the research of non-native tree species in areas where they occur more frequently. Non-native tree species like to inhabit degraded areas or areas affected by various disturbances, as well as areas where human influence is strong. As such, we chose the urban forests of the Tivoli, Rožnik and Šišenski hrib Landscape Park. The aim of this research was to identify which non-native tree species are present and at which locations, to determine their condition in the stand and, to check whether they are potentially invasive or not. We studied their appearance in different stand layers (lower, middle and upper layer), the light conditions in these layers and regeneration. Finally, we determined the potential invasiveness of individual non-native tree species present in the park and listed possible silvicultural measures where necessary. Measurements were performed in the field, and data was analyzed using basic computer software. The proportion of plots with regeneration was significantly higher in open parts of the stand compared to more shaded areas, especially for shade-intolerant species: black locust, wild chestnut and black walnut. Moderately shade- tolerant species such as red oak and white pine regenerated even in heavily shaded areas. The non-native tree species s that showed signs of potential invasiveness were: black locust and red oak, Other observed non-native tree species did not show signs of potential invasiveness in our study area or we were not able to obtain sufficient sample size for them to be able to conclude about their invasiveness.

• Keywords: non-native tree species, urban forest, invasive species