diplomsko delo - visokošolski strokovni študij - 1. stopnja
Rok Oštir (Author), Dušan Roženbergar (Mentor)

Abstract

Raziskava je potekala na območju Kočevskega Roga, ki predstavlja del Dinarskega gorovja v južni Sloveniji. Raziskovalne objekte so obsegale tri, leta 2001 izsekane vrzeli z razporeditvijo vzorčnih ploskev v mreži 5 x 5 m, na katerih smo izvedli tretjo meritev razvoja mladovja. Na vzorčnih ploskvah velikosti 2, 25 m% smo ocenjevali deleže zastrtosti tal, gostoto mladja, poškodovanost mladja, drevesno sestavo in rast dominantnih osebkov. Gostota jelke, gorskega javorja in bukve v mladju se je v primerjavi z meritvijo leta 2006 zmanjšala. Delež zastrtosti tal z mladovjem se je povečal, zmanjšal pa se je delež zastiranja z zelišči, skalami in drevesnimi ostanki. Poškodbe terminalnega poganjka zaradi objedanja so se pri bukvi v primerjavi s prejšnjima meritvama zmanjšale in so bile zabeležene pri 5 % dreves, medtem pa sta se deleža močno poškodovanih osebkov jelke in gorskega javorja v primerjavi s prejšnjima meritvama povečala na 37 % za jelko in 38 % za gorski javor. Delež osebkov s pokončno razrastjo se je povečal (79 %), zmanjšala pa sta se deleža osebkov z deformacijo stebla (6 %) in osebkov s plagiotropno razrastjo (14 %). Obraten in nepričakovan trend je bil opažen pri analizi oblike poganjkov, kjer se je delež osebkov z enoosno rastjo terminalnega poganjka zmanjšal (56 %), delež osebkov z dvovrhato (36 %) in metlasto (8 %) rastjo pa se je povečal. HD razmerje se je od prejšnje meritve povečalo z 74 na 86,7. Po končani analizi podatkov smo ugotovili, da v izbranih vrzelih mladje jelke in gorskega javorja ne prerašča v zgornje višinske razrede. To lahko v prihodnosti privede do biotskega in ekonomskega siromašenja teh gozdov.

Keywords

gozdni sestoji;razvoj mladovja;vrzeli;bukev;jelka;Kočevski Rog;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [R. Oštir]
UDC: 630*22+630*23(497.4Kočevski Rog)(043.2)=163.6
COBISS: 59752707 Link will open in a new window
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Downloads: 75
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Other data

Secondary language: English
Secondary title: Regeneration dynamics in gaps of managed fir-beech forests in the area of Kočevski Rog
Secondary abstract: The research took place in the area of Kočevski Rog, which represents a part of Dinaric Mountains in the South of Slovenia. Research plots were set up inside three, in 2001 cut down canopy gaps using 5 x 5 m grid. During the third measurement of regeneration development we assessed the ground coverage of tree regeneration and vegetation, the density of tree regeneration, browsing damage and the growth of dominant saplings on the plot. The density of silver fir, sycamore maple and beech in the first regeneration layer decreased compared to the 2006 measurement. The proportion of regeneration coverage increased, while the proportion of ground vegetation, rock coverage and coarse woody debris decreased. Damage rates of terminal beech shoots decreased to 5 %, while the proportion of severely damaged specimens of silver fir and sycamore maple increased compared to previous measurements to 37 % for silver fir and 38 % for sycamore maple. The proportion of stems with upright growth increased to 79 %, while the proportions of specimens with stem deformation (6 %) and specimens with plagiotropic growth (14 %) decreased. A reverse and unexpected trend was observed in the analysis of shoot shape, where the proportion of stems with single terminal shoots decreased (56 %), while the proportion of specimens with two terminal shoots (36 %) and broom shape growth (8 %) increased. The HD ratio has increased since the previous measurement from 74 to 86,7. After completing the data analysis, we found out that silver fir and sycamore maple do not recruit to higher regeneration layers which can cause future decrease of biotic and economic value of these forests.
Secondary keywords: forest stands;regeneration dynamics;gaps;beech;fir;Kočevski Rog;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za gozdarstvo in obnovljive gozdne vire
Pages: VIII, 47 f.
ID: 12779664