The influence of past management and natural disturbances on the development of Plešivška kopa forest vegetation and guidelines for future management.

V diplomskem delu smo s pomočjo podatkov Zavoda za gozdove Slovenije analizirali vpliv preteklega gospodarjenja z gozdovi in naravnih ujm na spreminjanje drevesne sestave gozdov severne, severovzhodne in južne strani Plešivške kope. Na terenu smo na 179 popisnih ploskvah, ki se nahajajo v štirih pomladitvenih jedrih, osmih vrzelih nastalih zaradi varstveno-sanacijskih sečenj, štirih sestojih v obnovi in treh debeljakih, s popisi mladovja in pomladka ugotovili delež, gostoto in kakovost posameznih drevesnih vrst. Na severni strani prevladuje v mladovju bukev, v pomladku gorski javor, na severovzhodni strani prevladuje v mladovju in pomladku gorski javor, na južni pa smreka. Največje gostote dosegata mladovje in pomladek na severni in severovzhodni strani. Najboljše kakovosti je smreka, najslabše bukev in veliki jesen. Gorski javor, gorski brest, veliki jesen in mokovec so močno poškodovani zaradi rastlinojede parkljaste divjadi. Na podlagi dobljenih rezultatov smo napovedali drevesno sestavo teh gozdov v prihodnosti, obenem pa določili smernice za prihodnje gospodarjenje. Sinteza zbranih podatkov in rezultati meritev kažejo na močan vpliv človeka, naravnih ujm in rastlinojede parkljaste divjadi na vegetacijski razvoj gozdov Plešivške kope.This undergraduate thesis was done, with the help of Slovenia Forest Service. It analyses the influence of past forest management and natural disturbances on the changes of the tree species composition in the north, northeast and south side of the Plešivška kopa forests. Through field work carried out on 179 sample plots, which were located in four regeneration centers, eight gaps (created by sanitation cutting), four stands in regeneration and three matured forestsand with the help of seedling and regeneration census, we studied tree species, composition, density and the quality of different tree species. On the northern side the beech is the dominant species in seedling in regeneration sycamore. Sycamore is the dominant species in regeneration on the north-eastern side of the study area and spruce on the southern side. The highest density are in seedling and regeneration on N and NE. Spruce trees are of the best quality, European ash and beech trees the worst. Sycamore, wych elm, European ash and common whitebeam are heavily damaged by ungulate. Based on results we have predicted the future structure of these forests, whilst also setting the guidelines for their future management. The synthesis of collected data and results show that humans, natural disturbances and ungulates all have strong impact on the vegetation development of Plešivška kopa forests