Sestojna zgradba in kakovost stoječih dreves v Krakovskem pragozdu in bližnjem gospodarskem gozdu

Podpadec, Nik (author), Skudnik, Mitja (mentor)

V diplomski nalogi smo preučevali kakovost in sestojno zgradbo v Krakovskem pragozdu in bližnjem gospodarskem gozdu. Meritve v Krakovskem pragozdu so potekale na vzorčnih ploskvah, ki jih je vzpostavil Pintar (2016), v gospodarskem gozdu smo vzpostavili novo vzorčno mrežo ploskev. Na krožnih ploskvah smo izmerili vsa drevesa, katerih premer na višini 1,3 m je bil vsaj 10 cm. Kakovost smo ocenjevali drevesom s premerom nad 20 cm, ki so pripadali drevesni vrsti dob, maklen, poljski brest, poljski jesen ali črna jelša. V nalogi smo se osredotočili na hrast dob. V pragozdu smo izmerili 300 dreves (35 za kakovost), v gospodarskem gozdu pa 182 (48 za kakovost). Lesna zaloga v pragozdu je bila 695,3 ± 337,3 m3/ha, v gospodarskem gozdu 392,6 ± 183,3 m3/ha. Temeljnica je v pragozdu znašala 45,6 ± 19,9 m2/ha, v gospodarskem gozdu 27,2 ± 11,1 m2/ha. V lesni zalogi in temeljnici ni bilo večjih razlik med letoma 2016 in 2023. Kakovost dreves je bila boljša v gospodarskem gozdu zaradi nege in gozdnogojitvenih ukrepov, ki jih izvajamo v takšnih gozdovih. Drevesna višina, kakovost in drevesna sestava pa se od juga proti severu zaradi nihanja podtalnice statistično značilno ne spreminjajo.

• Language: Slovenian
• Keywords: sestojna zgradba, pragozdni rezervat, Krakovo, gospodarski gozd
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [N. Podpadec]
• Year: 2024
• PID: 20.500.12556/RUL-161970
• UDC: 630*5:630*228(497.4Krakovski pragozd)(043.2)=163.6
• COBISS.SI-ID: 207990787
• Publication date in RUL: 18.09.2024

Secondary language

• Language: English
• Title: Stand structure and quality of standing trees in Krakovo virgin forest and managed forest

Abstract

In the thesis, we have investigated the quality and stand structure of the Krakovo primeval forest and the managed forest. The measurements in the Krakovo primeval forest were made on plots established by Pintar (2016) and on our own plots established in the managed forest in 2023. We assessed the quality of trees with a diameter of more than 20 cm for English oak, field maple, field elm, narrow-leaved ash and black alder, with a focus on oak. The quality of the trees was assessed according to Krajnc (2022). In the primeval forest 300 trees were measured (35 for quality), in the managed forest 182 (48 for quality). The growing stock in the primeval forest was 695.3 ± 337.3 m3/ha and in the managed forest 392.6 ± 183.3 m3/ha. The basal area was 45.6 ± 19.9 m2/ha in the primeval forest and 27.2 ± 11.1 m2/ha in the managed forest. There were no significant differences in basal area and growing stock between 2016 and 2023. Tree quality was better in the managed forest due to silvicultural measures. Tree height, quality and tree species composition did not change significantly from south to north due to groundwater fluctuations.

• Keywords: stand structure, virgin forest reserve, Krakovo, managed forest