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Razvoj mladja na rastišču Isopyro-Fagetum v pragozdu Krokar : diplomsko delo (visokošolski strokovni študij)
Grce, Dragomir (Author), Diaci, Jurij (Mentor) More about this mentor... This link opens in a new window

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Abstract
V pragozdu Krokar na jugovzhodnem delu Borovške gore so bile ponovljene meritve mladja v petih vrzelih na rastišču Isopyro-Fagetum. S tem je bil omogočen dober vpogled v dinamiko pomlajevanja v obdobju 1999-2009. Prve meritve so bile leta 1999, kasneje pa še 2003. Leta 2009 je bila uporabljena podobna metodologija kot v prejšnjih meritvah, le da smo dodali še nekaj novihparametrov, ki so se nanašali na oceno dominantnih osebkov. Ocenjena je bila zastrtost pritalne vegetacije, gostota, kakovost in poškodovanost mladja drevesnih vrst ter starost vrzelnikov. Najprej so bili rezultati primerjani med seboj v vrzelih, kasneje pa še v svetlobnih stratumih, ki smo jih dobili glede na kombinacijo direktnega in razpršenega svetlobnega sevanja. Zadnje snemanje svetlobe je potekalo leta 2003. Analiza meritev je pokazala, da se je gostota višjih bukvic povečala. Bukev se z leti vedno bolj uveljavlja na mikrorastišču z veliko razpršene svetlobe v osrednjih delih vrzeli, kjer je konkurenčnost čemaža manjša. Gostota javorja se postopno zmanjšuje. Vzrok je v objedanju in slabši toleranci na skromne svetlobne razmere. Ugotovljeno je bilo, da so vse raziskovalne vrzeli nastale s postopnim odmiranjem posameznih dreves.

Language:Slovenian
Keywords:pomlajevanje, pritalna vegetacija, pragzdovi, Krokar, pragozd Krokar, bukev, svetlobne razmere
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2010
Publisher:[D. Grce]
Number of pages:IX, 65 f.
Place:Ljubljana
UDC:630*188
COBISS.SI-ID:3052198 Link is opened in a new window
Views:596
Downloads:182
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Secondary language

Language:Unknown
Abstract:
In the virgin forest Krokar on the southeast part of the mountain Borovška gora the measurements of young seedlings have been repeated in five gaps on the site Isopyro-Fagetum with a purpose to get a good preview in regeneration dynamics during the years 1999-2009. The first measurements have been done in the year 1999 and later repeated in the year 2003. In the year 2009 similar methodology has been used, exept some new parameters which are related to the evaluation of dominant trees have been added. Ground coverage, density, quality, demage of woody regeneration and the age of fallen gap trees has been measured. At first the results have been compared between the gaps and later between the lite strata. Strata have been chosen regarding the combination of diffuse and direct light, which has been recorded in 2003. Our analysis showed that the density of higher young beech trees has increased. Over the years beech is gaining on the sites with a lot of diffused light in the central parts of the gaps, where there is less competition of Allium ursinum. The density of sycamore decreases with age, which is a result of game browsing and lower tolerance to poor lightning conditions. It has been found that all the research gaps were caused by the gradual death of the


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