Ekologija pomlajevanja pavlovnije (Paulownia tomentosa (Thunb.) Steud.) v gospodarskih gozdovih v Posavju

Gmajnič, Anže (author), Roženbergar, Dušan (mentor)

Pavlovnija je hitrorastoča tujerodna drevesna vrsta, ki se je po Sloveniji začela lokalno razširjati znotraj gospodarskih gozdov. Zanimalo nas je, kateri okoljski dejavniki vplivajo na njeno pomlajevanje v gospodarskih gozdovih. Na 13 lokacijah v Posavju smo opravili analizo pomlajevanja pavlovnije, pri čemer smo na območjih z največjo gostoto pavlovnije postavili raziskovalne ploskve v velikosti 5 × 5 m. Prišli smo do ugotovitve, da se pavlovnija pojavlja v gozdovih, kjer je zaradi sečnje ali ujm prišlo do nenadnega odpiranja sestoja. Zaradi svoje hitre rasti je ni mogoče zaznati v nižjih višinskih razredih; zabeležili smo jo v razredih nad 50 cm, povprečen višinski prirastek pavlovnije pa je bil 1,3 m. Preverili smo, ali na gostoto in višinski prirastek pavlovnije vpliva velikost sestojne vrzeli. Rezultati niso pokazali nobenih povezav, vendar so grafi v obeh primerih nakazali, da sta gostota in višinski prirastek pavlovnije višja v večjih sestojnih vrzelih. V prihodnje bo potrebno nameniti več pozornosti tej vrsti, saj ima zaradi podnebnih sprememb in ujm vedno boljše razmere za razvoj in širjenje. Predlagali smo nekatere preventivne gozdnogojitvene ukrepe, ki se že uporabljajo za preprečevanje širjenja podobnih vrst, kot sta robinija in visoki pajesen.

• Language: Slovenian
• Keywords: pavlovnija, Paulownia tomentosa, pomlajevanje, Posavje
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [A. Gmajnič]
• Year: 2022
• PID: 20.500.12556/RUL-140655
• UDC: 630*2:630*4+630*18+630*171(Paulownia tomentosa(Thunb.)Steud(497.4Posavje)(043.2)=163.6
• COBISS.SI-ID: 122209795
• Publication date in RUL: 17.09.2022

GMAJNIČ, Anže, 2022, Ekologija pomlajevanja pavlovnije (Paulownia tomentosa (Thunb.) Steud.) v gospodarskih gozdovih v Posavju [online]. Bachelor’s thesis. Ljubljana : A. Gmajnič. [Accessed 17 May 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=140655

Secondary language

• Language: English
• Title: Regeneration ecology of princess tree (Paulownia tomentosa (Thunb.) Steud.) in managed forest in Posavje region

Abstract

Princess tree is a fast-growing non-native tree species that has started to spread locally within managed forests in Slovenia. We were interested in which environmental factors influence the regeneration of princess tree in managed forests. We analyzed the regeneration of princess tree at 13 different sites in the Posavje region, setting up 5 × 5 m research plots in areas with the highest density of princess trees. We concluded that princess trees appear in forests where sudden forest stand openings have occurred due to logging or storms. Due to its rapid growth, it cannot be detected in the lower height classes; it was recorded in classes above 50 cm and the average height increment of princess trees was 1.3 m. We tested whether the density and height increment of princess trees are influenced by the size of forest stand gaps. The results showed no correlation, but the graphs in both cases indicated that the density and the height increment of princess trees were higher in larger forest stand gaps. In the future, more attention will have to be paid to this species, especially as climate change and storms are improving the conditions for its growth and expansion. We have proposed some preventive silvicultural measures that are already being used to prevent the spread of similar species such as the black locust and the tree of heaven.

• Keywords: princess tree, Paulownia tomentosa, regeneration, Posavje region