Vpliv snegoloma in sanacije na zgradbo bukovega odraščajočega gozda na brežiškem območju : magistrsko delo - 2. stopnja

Stare, Darja (author), Diaci, Jurij (mentor)

Na brežiškem območju je oktobra leta 2012 snegolom močno prizadel še olistane mlade bukove gozdove. Do tega dogodka še ni bilo veliko znanega, kako ukrepati ob tako obsežni ujmi, zato gozdarski strokovnjaki niso vedeli, na kakšen način in kako hitro bo potekala naravna obnova gozdov ter ali jo sanacija pospeši. V nalogi smo preučili zgradbo bukovih odraščajočih gozdov ter mladja glede na različne načine obravnave sestojev po snegolomu. Postavili smo 12 raziskovalnih ploskev velikosti 20 x 20 m, na katerih so bila izmerjena vsa drevesa nad 1,3 m višine po drevesnih vrstah in premeru. V drugem delu popisa so bila izbrana in popisana drevesa prihodnosti - najvišja, vitalna, nepoškodovana in hkrati kakovostna drevesa. Zadnji del popisa je zajemal oceno površine vrzeli na poškodovanih ploskvah, kjer smo vzorčili pomlajevanje na podploskvah 1,5 x 1,5 m. Analiza popisa ploskev je pokazala, da je na ploskvah še vedno zadostna količina dreves za nadaljnji razvoj sestojev, prav tako izbrancev, ki pa imajo večinoma neugodno dimenzijsko razmerje. Na podploskvah je zelo malo pomladka, zato se bodo vrzeli predvidoma zaprle z lateralno rastjo krošenj robnih dreves. Glavna ugotovitev je, da sanacija ugodno vpliva na hitrejšo naravno obnovo sestojev, saj pospeši razpadanje poškodovanih dreves. Edini problem, ki se pojavi ob sanaciji, je ekonomski; kako zagotoviti sredstva ter pripraviti lastnike do sodelovanja.

• Language: Slovenian
• Keywords: snegolom, bukev, odraščajoči gozdovi, naravna obnova, sanacije, vplivi, lateralna rast, Brežice
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [D. Kocjan]
• Year: 2015
• Number of pages: X, 76 str.
• PID: 20.500.12556/RUL-115256
• UDC: 630*231(497.4Brežice)(043.2)=163.6
• COBISS.SI-ID: 4257446
• Publication date in RUL: 21.04.2020

Secondary language

• Language: English
• Title: Impact of snowbreak and salvaging on structure of young beech forest in Brežice area

Abstract

In October 2012, a snowbreak severely damaged young beech forests with leaves still attached to the crown in the area of Brežice. Until this event, there was not much known on how to respond to such a large natural disturbance, so forestry experts did not know, in what way and how fast will natural regeneration take place and if salvaging of the forest would accelerate the process. In this research, we study the structure of young beech forests, according to the different methods of treatment when snowbreak occurs. For the purpose of this research, 12 research plots with a size of 20 x 20 m were placed and all trees above 1, 3 m height were identified according to species and measured for diameter. In the second part of the research, crop trees were selected and tagged - the highest, most vital, intact and of the highest quality. The last part of the research included evaluation of the canopy gaps in the area of the damaged plots, where we also sampled rejuvenation in the subplots of 1, 5 x 1, 5 m. The analysis of the survey plots revealed that the plots still contain a sufficient amount of trees for the further development of stands, as well as crop trees, but their dimensional ratios were not within target intervals. There was a small quantity of saplings presented in the subplots, so we expect that the gaps will be closed with the lateral growth of the canopy of the edge trees. We conclude that the salvage logging has a favourable effect on regeneration of the damaged stands as it accelerates the decomposition of damaged trees. However, the problem with salvage logging is its economical point of view; how to provide resources and convince owners to participate.