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Navadna ameriška duglazija (Pseudotsuga menziesii (Mirb.) Franco) v nasadih pri Ravbarkomandi po žledolomu leta 2014
ID Raida, David (Author), ID Brus, Robert (Mentor) More about this mentor... This link opens in a new window

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Abstract
Žledolom februarja 2014 in kasnejša gradacija podlubnikov sta v gozdnem revirju Planina uničila vse smrekove nasade in sestoje z velikim deležem navadne smreke. Z namenom, da bi na tem območju presodili ustreznost obsežnejše uporabe navadne ameriške duglazije, smo v predelih okrog Počivalnika in Starega vrha popisali štiri mešane sestoje ameriške duglazije in navadne smreke. Pri obeh drevesnih vrstah smo ocenjevali različne vrste poškodb po debelinskih stopnjah. Ocenjevali smo tudi gostoto in višinsko strukturo duglazijevih mladic na različni razdalji od matičnega sestoja. Ugotovili smo, da se je ameriška duglazija na preučevanih površinah ohranila v večinoma strnjenih sestojih in je v primerjavi z navadno smreko pokazala bistveno večjo odpornost proti žledolomu in podlubnikom. Tudi njena vitalnost je boljša od vitalnosti navadne smreke. V ustreznih svetlobnih razmerah je pomlajevanje prisotno in celo obilnejše od pričakovanega. Poškodbe mladja so posledica objedanja rastlinojede divjadi.

Language:Slovenian
Keywords:ameriška duglazija, razširjenost, poškodovanost, pomlajevanje, Ravbarkomanda, žledolom 2014
Work type:Bachelor thesis/paper
Organization:BF - Biotechnical Faculty
Year:2018
PID:20.500.12556/RUL-101841 This link opens in a new window
COBISS.SI-ID:5135526 This link opens in a new window
Publication date in RUL:08.07.2018
Views:3925
Downloads:479
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Secondary language

Language:English
Title:Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) in Ravbarkomanda plantations after 2014 sleet
Abstract:
A sleet storm in February 2014 and following bark beetle outbreak destroyed most of the Norway spruce monocultures and forests with a higher share of spruce in forest district Planina. In order to evaluate the adequacy of the wider use of Douglas fir in this area, we have analyzed four mixed plantations of Pseudotsuga menziesii and Picea abies in the areas around Počivalnik and Stari vrh. For both tree species, we have evaluated various types of damages at the diameter classes. We have also analysed the density and height structure of P. menziesii saplings at different distances from the mother forest stand. We have verified that Douglas fir on the studied areas has been preserved in small stands and compared to Norway spruce, it showed a significantly higher resistance to ice storm and bark beetle outbreak. Its vitality is even better than that of Norway spruce. In favorable light conditions, natural regeneration is present, even more abundant than expected. Recorded damage of the regeneration is mostly due to herbivorous browsing.

Keywords:Douglas fir, distribution, sleet storm damage, natural regeneration, Ravbarkomanda, 2014 sleet storm

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