20.500.12556/DiRROS-7693 Pomladitvena ekologija drugotnih visokogorskih smrekovih gozdov v Jelendolu Natural regeneration ecology of a secondary altimontane spruce forests at Jelendol Pomlajevanje visokogorskih smrekovih gozdov v Jelendolu je oteženo zaradi spleta dejavnikov. Jeseni leta 2003 smo v veliki vrzeli, malih vrzelih in pod sklenjenim sestojem na mreži 5 x 5 m postavili skupaj 227 ploskvic velikosti 1,5 x 1,5 m z namenom ugotoviti splošne pomladitvene razmere in glavne zaviralne dejavnike pomlajevanja. Na ploskvicah smo zbrali podatke o ekološkihrazmerah (relief, lega, nagib, globina tal, sestava površja, direktnoin difuzno sončno sevanje), vrsti in pokrovnosti pritalne vegetacije ter vrstah, gostoti, višinah in priraščanju mladja. Asimetrija v osvetljenostije vidna tako v smeri N-S kot E-W. Glede na porazdelitev direktnein difuzne svetlobe smo ploskvice razdelili na štiri skupine. Smreka je dobro pomlajena (28.605 na ha), zlasti izrazit je rob velike vrzeli, vendargostota mladja ni značilno odvisna od svetlobe. Nasprotno pa pomanjkanjesvetlobe onemogoča nadaljnji razvoj v sestoju in v malih vrzelih. Rezultati so pokazali, da svetlobne razmere na 1.500 m n.v. niso edini dejavnik, ki vpliva na uspešnost pomlajevanja. Velik pomen imajo še zlasti lesni ostanki, medtem ko je vpliv zeliščne plasti (prevladujeta Festuca altissima All. in Calamagrostis arundinacea (L.) Roth.) in globine tal negativen. Največji problem je še vedno objedanje. Natural regeneration of altimontane spruce forests at Jelendol is retarded dueto many factors. In autumn 2003, gaps of different size and parts of the surrounding stand were covered with a 5 x 5 grid m to define sampling plots. Atotal of 227 plots with 1,5 x 1,5 m in size were installed to analyse generalregeneration conditions and inhibitors. The following ecological parameters were estimated on each plot: micro relief, inclination, soil depth,ground cover, direct and diffuse solar radiation. Woody regeneration (density, height, height increment) and ground vegetation were recorded at each plot. Considering that N-S and E-W radiation asymmetry was explicit, the distribution of direct and diffuse radiation was divided into four groups among the plots. Spruce regeneration (28.,605 per ha) was mainly found at the edge of the large gap, though total regeneration density and radiation were not correlated. However, in both the stand and the small gaps, the lack of radiation hindered further development. This study showed that light conditions were not the only factors affecting the regeneration success at an altitude of 1,500 m. The presence of woody debris was important, while the influence of the herb layer (predominant species were Festuca altissima All. and Calamagrostis arundinacea (L.) Roth.) and soil depth proved to be negative. The impact of browsing, however, remained the main problem. visokogorski gozdovi smrekovi gozdovi pomlajevanje ekološki dejavniki sončno sevanje vrzeli Jeledol true false true Slovenski jezik Ni določen Znanstveno delo 2017-07-12 09:19:01 2017-07-12 09:19:01 2022-08-12 14:13:19 0000-00-00 00:00:00 2008 0 0 str. [27]-38 Vol. 85 2008 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*23:630*46(497.4 Jelendol)(045)=163.6 0351-3114 URN:NBN:SI:doc-4PO2SD3V 2283686 6206978 RAZ_Rozman_Elizabeta_i2008.pdf RAZ_Rozman_Elizabeta_i2008.pdf 1 A8835EC84AB67682E3B3C7B3FAED9C16 4e793884835d057372f7ea5554578ff00d53edf41bedd6d1ff76e4a1aed13f25 233a852d-17b5-11ed-b6b8-001a4af901a5 20.500.12556/dirros/ac7e0365-109f-4b3e-9153-d371c80745b4 https://dirros.openscience.si/Dokument.php?lang=slv&id=9558 Gozdarski inštitut Slovenije Acta Silvae et Ligni 0 0 0