Razvojna dinamika dveh gozdnih rezervatov na območju žledoloma : magistrsko delo - 2. stopnja

Baša, Mirko (author), Hladnik, David (mentor), Kobal, Milan (comentor)

V gozdnih rezervatih Obramec in Risov ţleb smo raziskovali razvojno dinamiko in poškodovanost sestojev zaradi ţledoloma leta 2014. Analizirali smo podatke, ki smo jih pridobili z meritvami na vzorčnih ploskvah. Prav tako smo uporabili lidarske podatke, posnete leta 2009 in leta 2014, ki so nam prikazovali stanje sestojev pred in po ţledolomu. V obeh rezervatih je bila prevladujoča drevesna vrsta jelka. V Risovem ţlebu je bil njen deleţ višji za 12 % in je znašal 48 %. Sledile so bukev, smreka in manjšinske vrste. Lesna zaloga je v rezervatu Obramec znašala 517,2 m3/ha, v Risovem ţlebu je bila niţja za 12,3 m3/ha. Na hektarju površine smo v Obramcu našteli 416 dreves, v Risovem ţlebu pa 34 manj. V Obramcu je bilo povprečno poškodovanih 43 %, v Risovem ţlebu pa 40 % dreves. Najmanj je bila poškodovana jelka, najbolj pa bukev. Odlom vrha drevesa je bila najpogostejša poškodba dreves v obeh rezervatih. Prevladovala je v zgornji polovici krošnje. Zaradi odloma posameznih vej je v največji meri prihajalo do 25 % izgube volumna krošnje. Poškodovanost rezervatov in gospodarskega gozda je bila podobna, vendar niţja v obeh rezervatih. V obeh rezervatih prevladujejo majhne vrzeli do 10 in do 50 m2 površine. Deleţ vrzeli, katerih površina je večja od 100 m2, znaša v Obramcu le 3,5 %, v Risovem ţlebu pa 11,4 %. Vrzeli v rezervatu Obramec skupno zasedajo 9 %, v Risovem ţlebu pa 16 % površine. Po ţledu se je površina novonastalih vrzeli povečala le za 5,2 % v Obramcu in 10,2 % v Risovem ţlebu.

• Language: Slovenian
• Keywords: gozdni rezervati, žledolom, vrzeli, Obramec
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [M. Baša]
• Year: 2016
• Number of pages: X, 71 f.
• PID: 20.500.12556/RUL-115247
• UDC: 630*22(043.2)=163.6
• COBISS.SI-ID: 4509862
• Publication date in RUL: 21.04.2020

BAŠA, Mirko, 2016, Razvojna dinamika dveh gozdnih rezervatov na območju žledoloma : magistrsko delo - 2. stopnja [online]. Master’s thesis. Ljubljana : M. Baša. [Accessed 17 May 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=115247

Secondary language

• Language: English
• Title: Dynamics of two forest reserves in ice storm area

Abstract

In Obramec and Risov ţleb forest reserves the dynamics and damage of the stands caused by the ice storm in 2014 were examined. We analysed the data obtained from measurement of sampling plots. In addition, we used lidar data from 2009 and 2014, which show the stand structure before and after the ice storm. In both reserves the prevalent tree species is silver fir. Its share is higher by 12 % in Risov ţleb, amounting to 48 % in total. It is followed by beech, Norway spruce, and other species. The growing stock in Obramec reserve is 517,2 m3/ha and 12,3 m3/ha less in Risov ţleb. The number of trees per hectare is 416 in Obramec and 34 less in Risov ţleb. On average, the share of damaged trees is 43 % in Obramec and 40 % in Risov ţleb. The least damaged tree is silver fir and the most damaged one beech. The most common damage of trees in both reserves was a broken tree top, prevalent in the upper part of the crown. The broken individual branches amounted to a maximum of 25 % loss of crown volume. The damage of the reserves and managed forest was similar, but lower in forest reserves. In both reserves small gaps ranging from 10 to 50 m2 are predominant. The share of gaps with an area greater than 100 m2 is only 3,5 % in Obramec and 11,4 % in Risov ţleb. The total area of gaps is 9 % in Obramec and 16 % in Risov ţleb. Due to the ice storm, the area of new formed gaps has increased for 5,2 % in Obramec and 10,2 % in Risov ţleb.