Vpliv objedanja na pomlajevanje po vetrolomu na Črnivcu

Ugovšek, Peter (author), Roženbergar, Dušan (mentor)

Velikopovršinske motnje kot je vetrolom, ponujajo drugačne razmere za pomlajevanje kot pomlajevanje pod zastorom odraslega sestoja. Sedem let po vetrolomu smo proučili vpliv divjadi na pomlajevanje gozda. Na območju Črnivca sta se nahajali dve ogradi stari šest let, ki sta odličen pokazatelj koliko vpliva divjad na razvoj mladja. Mladje smo popisovali na 80 vzorčnih ploskvah velikosti 4 m2. Razvrstili smo jih v višinske razrede ter ocenili objedenost. Na ploskvah smo tudi popisali zastrtost zeliščne plasti, naklon terena, relief, ekspozicijo ploskve in popisali vse posebnosti na ploskvi (skalovitost, sečni ostanki...). V ograjenih površinah smo imeli večjo zastrtost zeliščne plasti, višje višine in večje gostote drevesnih vrst, ki so pogosto podvržene objedanju velikih rastlinojedcev. Posledično zaradi večjih gostot listavcev, smo imeli v ograjenih površinah manj iglavcev, ki so med velikimi rastlinojedci manj priljubljena hrana. Ograde so lahko pripomoček s katerimi lahko vplivamo na mešanost gozda, saj smo imeli v ograjenih površinah večje število bolj razvitih osebkov plemenitih listavcev. S sodelovanjem Zavoda za gozdove Slovenije, smo pridobili stroške ograjevanja in stroške alternativne zaščite mladja s tulci, ter primerjali ekonomičnost ograd na Črnivcu.

• Language: Slovenian
• Keywords: Objedanje, Črnivec, obnova gozda po ujmi, pomlajevanje
• Work type: Bachelor thesis/paper
• Organization: BF - Biotechnical Faculty
• Year: 2017
• PID: 20.500.12556/RUL-94249
• Publication date in RUL: 21.07.2017

Secondary language

• Language: English
• Title: Influence of browsing on regeneration after windthrow on Črnivec

Abstract

Large scale disturbances like windthrows create different ecological conditions for forest regeneration compared to those under canopy of adult stands. Seven years after windthrow on Črnivec area we analyzed the influence of ungulates on tree regeneration in two 6 years old fences. We set up 40 plots in fences and another 40 outside the fences. The development and browsing damage of seedlings were investigated. In addition vegetation coverage and selected terrain features were measured or estimated. We found more herbs, higher seedling density inside fenced area. Seedlings of palatable tree species were higher and more developed in fenced areas, where the proportion of broadleaves was higher compared to conifer tree species. Fencing is allowing for higher tree species diversity and higher proportion of noble broadleaves, which are economically and ecologically important for future development of analyzed stands. In cooperation with Slovenia forest service costs of fencing and other methods of seedling protection were compared.

• Keywords: Ungulate browsing, forest regeneration, Črnivec, windthrow