Dve desetletji spremljanja sukcesijskega razvoja vegetacije v vrzelih smrekovih nasadov na Krašici : diplomsko delo - univerzitetni študij

Tamše, Jurij (author), Diaci, Jurij (mentor)

V diplomskem delu sta ponovno preučena pritalna vegetacija, ter naravno pomlajevanje v enomernih velikopovršinskih nasadih smreke na kraški planoti Krašica v Savinjskih Alpah, na rastišču Homogyno sylvestris-Fagetum in rastiščnem tipu Petasites albus. Za vpogled v razvojne procese vegetacije je izpeljana tudi okvirna primerjava s snemanji v letih 1993, 1994 in 1998. Raziskavo smo izpeljali v desetih raziskovalnih objektih % vrzelih. V štirih malih vrzelih smo popisali 56 ploskvic velikosti 1 m2, v štirih velikih vrzelih 29 ploskev velikosti 25 m2, pod zastorom krošenj smo popis opravili na 15 ploskvicah velikosti 1 m2. Polovica vrzeli je bila ograjenih za proučevanje vpliva objedanja velikih rastlinojedih parkljarjev. Dominantna višina in vrstna pestrost prisotne vegetacije se na preučevanih objektih z leti zmanjšuje. Rezultati nakazujejo, da male vrzeli ne omogočajo naravne obnove. V velikih vrzelih smo zabeležili velike razlike glede na starost in lego. Mladje v starejših vrzeli je bilo višje, najboljše preraščanje mladja je bilo na vzhodnih delih vrzeli, najvišje gostote nasemenitve pa na južnih (osojnih) delih vrzeli. V ograjenih vrzelih smo ugotovili večje gostote jelovega mladja, posredno pa se je zaradi razvoja grmovnih vrst zmanjšano število smrekovega mladja.

• Language: Slovenian
• Keywords: naravno pomlajevanje, smrekovi nasadi, razvoj vegetacije, vrzeli
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [J. Tamše]
• Year: 2014
• Number of pages: IX, 55 str.
• PID: 20.500.12556/RUL-115165
• UDC: 630*23:630*52:630*17(497.4Krašica)(043.2)=163.6
• COBISS.SI-ID: 3971238
• Publication date in RUL: 15.04.2020

Secondary language

• Language: English
• Title: Two-decade monitoring of successional vegetation development in spurce (Picea abies l.) plantation gaps on Krašica

Abstract

This thesis re-examines the field-layer vegetation and the natural seedling regeneration in large scale even-aged spruce stands on Krašica (karst) plateau in Savinja Alps on Homogyno-sylvestris Fagetum asociation and Petasitus albus growing type. To better understand the developmental vegetation processes, we compared the results to surveys conducted in years 1993, 1994, 1998. Research was conducted on 10 experimental plots - gaps. In 4 smaller gaps we inventoried 56 sub-plots 1 m2 in size, in 4 large gaps we inventoried 29 sub-plots sized 25 m2, and we also inventoried 15 1 m2 sized sub-plots under the canopy cover. Half of the plots under tree canopy was fenced for studying the effects of ungulate browsing. The dominant height and vegetation species richness decreased with age. The results showed that small gaps do not enable natural regeneration. In larger gaps data showed differences between different ages and locations. Saplings and seedlings in older gaps were higher, showed the best height transitioning on eastern parts of the gaps and the highest density on southern parts of the gaps. In the fenced gaps we have detected higher density of silver fir and lower number of spruce saplings and seedlings, which we attribute to shrub cover.