341. Structure, development and growth of selection forests at the Granata research siteMatej Reščič, Andrej Bončina, 2007, original scientific article Abstract: The Granata research site was established for the study of structure, growth and regeneration of silver fir-European beech single stem selection forest. Three phytocoenological relevés were carried out, all trees ?5 cm diameter at breast height (d.b.h.) were measured by full callipering, tree growth was analysed for sample trees, regeneration of tree species was registered on 63 sampling plots. In addition, historical data from past forest inventories werestudied. In the period from 1952 to 2003, the share of silver fir has decreased from 86% to 26%, the share of Norway spruce increased significantly,whereas the share of beech and sycamore has slightly increased. The current growing stock amounts to 350 m3 ha-1, with large-size diameter trees (d.b.h. ?50 cm) representing 51% of total growing stock. The site is divided into 16 stand patches with significant differences in tree species composition and diameter distribution. Regeneration is sufficient with silver fir prevailing in total number of seedlings (42%). 23% of all seedlings are damaged as a result of game browsing.
Keywords: selection forest, plenterwald, selection system management, stand structure, tree species composition, regeneration, diameter distribution
Published in DiRROS: 12.07.2017; Views: 4923; Downloads: 2084
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342. Obravnavanje gozdnih sestojev v gozdarskem načrtovanju na primeru gozdnih območij Bohinj in PohorjeAleš Poljanec, Andrej Bončina, 2006, original scientific article Abstract: V raziskavi smo analizirali značilnosti izločanja in obravnavanja sestojev v gozdnogospodarskem načrtovanju na primeru objektov Bohinj (GGO Bled) in Pohorje (GGO Maribor) s skupno površino 29950ha gozdov. Analizo negovalnih enot ter primerjavo negovalnih enot in sestojev smo opravili na sistematično izbranem vzorcu devetindvajsetih oddelkov (9 % površine gozdov) v objektu Bohinj in petindvajsetih oddelkov (10 % površine gozdov) na Pohorju. Povprečna površina izločenih sestojev v Bohinju znaša 1,04 ha (Me = 0,53 ha), na Pohorju pa 2,30 ha (Me= 1,33 ha). Povprečna površina negovalnih enot je 2,00 ha (Me = 0,95 ha) v Bohinju in 1,88 ha (Me = 0,92 ha) na Pohorju. Na velikost izločenih sestojev predvsem značilno vplivajo struktura gozdnih sestojev, popisovalec, rastiščne razmere, gospodarjenje z gozdovi ter tradicija gozdarskega načrtovanja v posameznem območju.
Keywords: sestoji, klasifikacija sestojev, gozdna inventura, gozdnogospodarsko načrtovanje, gozdnogojitveno načrtovanje
Published in DiRROS: 12.07.2017; Views: 4345; Downloads: 1772
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343. Silver fir (Abies alba Mill.) distribution in Slovenian forestsAndrej Ficko, Andrej Bončina, 2006, original scientific article Abstract: We analysed the characteristics of silver fir (Abies alba Mill.) occurrence and distribution in Slovenia using databases of the Slovenian Forest Service (SFS). Silver fir is the third most widely distributed tree species in Slovenia, occurring in approximately 40 % of total forest area, but abundantly in less than 10 %. Its share in total growing stock varies between separate forest management regions. It is more abundant in the Dinaric and part of the Pre-alpine phytogeographic regions. The highest share in total growing stock reaches at altitudes between 800 m and 1000 m above sea level, forests with silver fir cover the most extensive surface in the altitude belt from 1000 to 1200 m. Silver fir occurs abundantly in 11 syntaxes. Between them, silver fir-beech forests (Abieti-Fagetum dinaricum TREG. 57, syn.: Omphalodo-Fagetum (TREG.57 corr. PUNC.80) MAR et al. 93) strongly prevail, followed by fir forests with fern (Dryopterido-Abietetum KOŠ.65, syn.: Galio rotundifolii-Abietetum BARTSCH.40). Silver fir diameter distribution considerably varies between separate forest management regions. The regions with the highest share of silver fir (Postojna, Kočevje) dominate also in having large diameter silver fir trees, whereas in other regions (e.g. Nazarje, Kranj, Maribor) small diameter silver fir trees are prevalent. Ddevelopmental stage structure shows that in forest stands with silver fir there is a higher share of timber phase, stands in regeneration, youth stands and selective forests. Considering regeneration we can conclude, that more intensive decreasing trend in silver fir share is expected in the Ddinaric phytogeographic region than in northern parts of Slovenia. Successful regeneration due to lower red deer population and balanced stem diameter structure with higher proportion of small diameter trees promise easier conservation of silver fir in northern parts.
Keywords: forest stand structure, forest vegetation, altitude, Slovenia
Published in DiRROS: 12.07.2017; Views: 4510; Downloads: 1786
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344. Analysis of the influece of ungulates on the regeneration of Dinaric fir-beech forests in the research site Trnovec in the Kočevje forest managementregionKristjan Jarni, Dušan Robič, Andrej Bončina, 2004, original scientific article Abstract: In the period 1970-2000, 152 fenced-in areas were built in the Kočevje Forest Management Region with an aim to protect tree seedlings and saplings from ungulatesć activity and to monitor the influence of roe and red deer on natural regeneration. The average surface area of fenced areas is 0.71 ha. Using the pair comparison technique (fenced vs. unfenced areas), the structureand the composition of the natural regeneration of tree species as well as complete shrub and herb vegetation were analysed in the research site Trnovec. Furthermore, the vegetation was investigated using the Braun-Blanquetmethod. The research results show significant differences between fenced and unfenced areas, both in tree species composition and in theheight structure of the sapling community. In fenced areas the total numberof saplings taller than 50 cm is higher and an increase is also evident in the number of saplings of silver fir Abies alba, sycamore Acer pseudoplatanus, elm Ulmus glabra and other minor tree species. There are also significant differences in species composition and in the abundance of plant species in the herb layer. The results show that natural regeneration of Dinaric fir-beech forests is successful, provided the influence of ungulates is excluded.
Keywords: natural forest regeneration, Fagus sylvatica, roe deer, fir-beech forest, Abies alba, fenced area, seedling browsing, Kočevje forest region, research site Trnovec
Published in DiRROS: 12.07.2017; Views: 4664; Downloads: 2081
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345. Isolation and characterization of essential oils from the cones of Norway spruce (Picea abies Karst.), European larch (Larix decidua Mill.) and Scots pine (Pinus sylvestris L.)Janja Zule, Vesna Tišler, Andrej Žurej, Niko Torelli, 2003, original scientific article Abstract: Preučevana je bila ekstrakcija eteričnih olj iz svežih storžev navadne smreke, rdečega bora in evropskega macesna ter njihova kemijska karakterizacija z metodo plinske kromatografije. Identificirani so različni monoterpeni in določene njihove relativne koncentracije. Ovrednotene so tudi vsebnosti višjih terpenov in podane razlike v kemijski sestavi posameznih eteričnih olj.
Keywords: navadna smreka, rdeči bor, evropski macesen, eterična olja, terpeni, kemijska karakterizacija, plinska kromatografija
Published in DiRROS: 12.07.2017; Views: 4881; Downloads: 2036
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346. Poročilo o projektni nalogi ManFor C.BD LIFE09ENV/IT/000078, Mejnik 5 : po pogodbi o sofinanciranju projektne naloge LIFE09ENV/IT/000078 "Managing forests for multiple purposes: carbon, biodiversity and socio-economic wellbeing" : št.: MOP 2511-11-25-0026Lado Kutnar, Mitja Ferlan, Andrej Kobler, Maarten De Groot, Urša Vilhar, Marko Kovač, Mitja Skudnik, Matjaž Čater, Aleksander Marinšek, Andreja Ferreira, Boštjan Mali, Špela Planinšek, Milan Kobal, Gregor Meterc, Tom Levanič, Tine Grebenc, Daniel Žlindra, Iztok Sinjur, Saša Vochl, Klemen Eler, Maja Jurc, Andrej Breznikar, Primož Simončič, 2015, treatise, preliminary study, study Keywords: gospodarjenje z gozdom, biotska raznovrstnost, sestoji, odmrli les, ogljik, dinarsko jelovi-bukovi gozdovi, ManFor, Slovenija
Published in DiRROS: 12.07.2017; Views: 3263; Downloads: 1268
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347. Poročilo o projektni nalogi FutMon LIFE07ENV/D/000218 : mejnik 5Primož Simončič, Mitja Skudnik, Gal Kušar, Saša Vochl, Nikica Ogris, Tom Levanič, Matej Rupel, Daniel Žlindra, Mitja Ferlan, Andrej Verlič, Marko Kovač, 2011, treatise, preliminary study, study Keywords: metodologija, gozdna inventura, evropska mreža, FutMon+
Published in DiRROS: 12.07.2017; Views: 2906; Downloads: 775
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348. Light response of Fagus sylvatica L. and Abies alba Mill. in different categories of forest edge - vertical abundance in two silvicultural systemsMatjaž Čater, Andrej Kobler, 2017, original scientific article Abstract: In managed Dinaric montane fir (Abies alba Mill.) and European beech (Fagus sylvatica L.) forests, the light response of young beech and fir in gap microsites was studied during three consecutive growing periods (2009, 2010, and 2011) under controlled environmental conditions in stands of single-tree and irregular shelterwood silvicultural system. According to maximal quantum yield, the different response between species in microsite light categories was evidenced for silver fir on microsites with predominating diffuse light and for beech on microsites with predominating direct light, respectively. Abundance and change of share in microsite light categories was compared over different elevation belts on comparable sites between two silvicultural systems. The share of forest edge area was bigger in the irregular shelterwood system. Change in width of forest edge (20, 30 and 40 m) did not affect the proportion and share of the microsite in both regions of different silvicultural system. Separation of microsite areas between both silvicultural systems, evident in lower elevation belts was not evident in the most conflict and highest elevation zone, while the absolute values of all categories above 700 m in both systems were almost identical, indicating the same, small-scale irregular shelterwood system, known also as the freestyle silvicultural approach.
Keywords: Fagus sylvatica, Abies alba, Dinaric silver fir and beech forests, Dinaric forests, forest edge, silviculture, selective system, irregular shelterwood system
Published in DiRROS: 12.07.2017; Views: 3099; Downloads: 1276
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349. Poročilo o projektni nalogi FutMon LIFE07ENV/D/000218 : mejnik 4Primož Simončič, Mitja Skudnik, Gal Kušar, Saša Vochl, Nikica Ogris, Tom Levanič, Daniela Stojanova, Robert Krajnc, Špela Jagodic, Dušan Jurc, Lado Kutnar, Matej Rupel, Daniel Žlindra, Mitja Ferlan, Andrej Verlič, Urša Vilhar, Marko Kovač, 2010, treatise, preliminary study, study Keywords: metodologija, gozdna inventura, evropska mreža, FutMon+
Published in DiRROS: 12.07.2017; Views: 2960; Downloads: 832
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