magistrsko delo
Sebastian Bambič (Author), Kristjan Jarni (Mentor)

Abstract

Ameriška duglazija (Pseudotsuga menziesii (Mirb.) Franco) je dobro raziskani endemit tihomorskega dela Severne Amerike, 'tujerodni' iglavec z velikim gospodarskim in okoljskim potencialom, uspešno vnesen v evropske gozdove že tekom druge polovice 19. stoletja. Zanimanje za njen nadaljnji vnos pa se še vedno povečuje. Pri tem je ključna izbira najprimernejšega gozdnega reprodukcijskega materiala (GRM) za območje vnosa. Eden od raziskovalnih objektov, ki nam pri takih izbirah lahko pomagajo, je Padež II v Brkinih, osnovan z 11 proveniencami leta 1972 pod okriljem IUFRO. Povprečno preživetje neredčenega 51-letnega sestoja je bilo 38,9 %, izračunana lesna zaloga 652,2 m3/ha. S parametričnimi in neparametričnimi testi smo zaznali razlike v priraščanju, vitalnosti in vejnatosti med proveniencami. Z dobrim preživetjem, vitalnostjo in prirastkom pozitivno izstopa provenienca Steamboat iz zahodnega Oregona, negativno pa Arcata I iz severne Kalifornije. Kakovost sortimentov zaradi slabega čiščenja vej razen posameznih izjem ne presega razreda C. Na splošno so na razmere v Brkinih bolje prilagojene oregonske in višjeležeče kalifornijske provenience. Za optimalno smo izbrali provenienco Detroit, ki je nadpovprečna po vseh kriterijih. V luči napovedanih in že zaznavnih podnebnih sprememb bi bilo smiselno vrste, kot je ameriška duglazija, pospešeno, a utemeljeno, uvajati v naše gozdove.

Keywords

navadna ameriška duglazija;provenienca;IUFRO;Brkini;Slovenija;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [S. Bambič]
UDC: 630*2+630*17Pseudotsuga menziesii (Mirb.) Franco (497.4Brkini)(043.2)=163.6
COBISS: 122074627 Link will open in a new window
Views: 13
Downloads: 2
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Other data

Secondary language: English
Secondary title: Douglas fir (Pseudotsuga menziesii (mirb.) franco) on an international provenance plantation Padež II in Brkini
Secondary abstract: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is a well researched endemic of pacific North America, a 'non-native' conifer with great economic and ecologic potential, successfully introduced into european forests as early as the second half of the 19th century. The interest for it's further introduction is still growing and crucial to it's success is selecting optimal forest reproductive material (FRM). Knowledge to do so can be gained with provenance trial plantations. One of which is Padež II, composed of 11 provenances in 1972 under IUFRO, located in Brkini, Slovenia. The average survival rate in the 51-year-old plantation is 38.9 % with a growing stock of 652.2 m3/ha. Parametric and non-parametric tests were used in finding the differences in growth, vitality and branch characteristics between provenances. One of the most positively deviating provenances is Steamboat, whereas Arcata I deviates negatively. The overall log quality does not go above class C. According to our observations, Western Oregon and higher altitude Northern Californian provenances are best suited for this part of Slovenia, and Detroit has been choosen as the optimal one. In light of predicted climate change, a wider introduction of species, such as Douglas-fir, into Slovene forests should be initiated.
Secondary keywords: Douglas-fir;provenance;IUFRO;Brkini;Slovenia;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. Ljubljana, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire
Pages: IX, 65 f., [1] f. pril.
ID: 16496665