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1572. Sistem opredelitve rabe tal na ploskvah nacionalne gozdne inventure 2021 (gozd/drugo gozdni zemljišče/negozd) : spletni uvajalni seminar za sodelavce GIS, ki bodo interpretirali ploskve drugega panela Nacionalne gozdne inventure na mreži 2 km x 2 km preko Slovenije, 10. - 11. 2. 2021Anže Martin Pintar, Špela Planinšek, Mitja Skudnik, 2021, other performed works Keywords: nacionalna gozdna inventura, definicija gozda, raba zemljišč, gozdovi, negozd, druge gozdne površine
Published in DiRROS: 05.03.2021; Views: 1514; Downloads: 0 |
1573. Poročilo o preskusu št.: LVG 2021-001 : opis vzorca: Acer pseudoplatanus, les, lubje, sekanci : namen testiranja: sum na: glivaBarbara Piškur, Tašja Cvelbar, Zina Devetak, Špela Jagodic, Nikica Ogris, 2020, expertise, arbitration decision Keywords: varstvo gozdov, morfološke analize, gorski javor, Acer pseudoplatanus, kompleksna bolezen, Fusarium, Neocucurbitaria acerina, Neonectria
Published in DiRROS: 05.03.2021; Views: 1049; Downloads: 0 |
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1576. Merjenje in sortimentacija : priročnik za pravilno merjenje in razvrščanje okroglega lesaMirko Baša, 2020, dictionary, encyclopaedia, lexicon, manual, atlas, map Keywords: gozdni lesni sortimenti, kakovostni razredi, okrogli les
Published in DiRROS: 05.03.2021; Views: 1062; Downloads: 344
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1577. Napake lesa : priročnik za prepoznavanje napak okroglega lesa : opisi najpomembnejših napak lesa, njihovo merjenje in določanje kvarnega vpliva na kakovostMirko Baša, 2020, dictionary, encyclopaedia, lexicon, manual, atlas, map Keywords: napake lesa, zasebni lastniki gozdov, kakovostni razredi, krojenje
Published in DiRROS: 05.03.2021; Views: 1208; Downloads: 371
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1578. Water regulation ecosystem services following gap formation in Fir-beech forests in the Dinaric KarstUrša Vilhar, 2021, original scientific article Abstract: This paper investigates how variation in forest structural characteristics affects the water retention capacity of gaps and forests in fir-beech forests in the Dinaric Karst. Forests are identified as a key element of the landscape for provision of pristine water resources, particularly in highly vulnerable karst aquifers characterized by rapid infiltration of recharge water, high subsurface permeability, and heterogeneous underground flow. Indicators of hydrologic fluxes (drainage flux, canopy interception, transpiration, and soil evaporation) in a large experimental gap (approximately 0.2 ha in size) and those in a nearby old-growth gap were compared over a 13-year period using the Brook90 hydrological model and their structural characteristics were analyzed. In addition, the hydrologic fluxes were also simulated for a managed forest and an old-growth forest for reference. Water regulation capacity was lowest in the experimental gap, where drainage flux accounted for 81% of precipitation and the sum of canopy interception, transpiration, and soil evaporation (evapotranspiration) accounted for 18%. This was followed by the old-growth gap, where drainage flux accounted for 78% of precipitation and evapotranspiration for 23%. Water retention capacity was highest and generally similar for both forests, where 71%72% of annual precipitation drained to the subsurface. The results of this study suggest that the creation of large canopy gaps in fir-beech forests in the Dinaric Karst results in significant and long-lasting reduction in soil and vegetation water retention capacity due to unfavorable conditions for successful natural tree regeneration. For optimal provision of water regulation ecosystem services of forests in the Dinaric Karst, small, irregularly shaped canopy gaps no larger than tree height should be created, mimicking the structural characteristics of naturally occurring gaps in old-growth forests.
Keywords: water retention capacity, drainage flux, evapotranspiration, Brook90 hydrological model, experimental canopy gap, old-growth forest
Published in DiRROS: 05.03.2021; Views: 995; Downloads: 824
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1580. Differences in growth and log quality of Douglas-Fir (Pseudotsuga menziesii (Mirb.) Franco) provenancesPeter Smolnikar, Robert Brus, Kristjan Jarni, 2021, original scientific article Abstract: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) is a non-native conifer from western North America that was introduced into European forests at the end of the 19th century. Plantations of Douglas-fir in Europe have shown good performance, quality, and resilience to exacerbating climatic conditions. However, all these qualities strongly depend on provenance. A total of 1061 surviving trees of fifteen different Douglas-fir provenances were measured in a Slovenian provenance trial that was established within the framework of the 1966/1967 IUFRO seed collection program. We found significant differences among provenances with respect to survival rate, growth performance, and log quality. The total recorded yield of the 46-year-old stand was 602.9 m3/ha, and the average survival rate was 43%. The correlation of juvenile tree heights in 1985 and their average breast height diameters in 2017 is positive and significant. Based on vitality and diameter, the best performing provenances were Yelm and Cathlamet. The provenance with the best log quality assessed through branchiness is Jefferson (Olympic Peninsula, western Washington). All the most promising provenances for western Slovenia (Central Europe) originate from the low-altitude western coast of Washington (WACO), with the Cathlamet provenance showing the best combination of good growth, survival rate, and log quality
Keywords: coniferous plantation, IUFRO provenance trial, non-native species, variability, growth, branching
Published in DiRROS: 05.03.2021; Views: 1072; Downloads: 842
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