Zasnova poskusa redčenj bukovih drogovnjakov v raziskovalnem objektu Pišece : diplomsko delo - univerzitetni študij

Pajk, Benjamin (author), Bončina, Andrej (mentor), Kadunc, Aleš (co-mentor)

V gozdnogospodarski enoti Pišece je bil zasnovan raziskovalni objekt za dolgoročno spremljavo učinkov redčenj na razvoj bukovih sestojev. Objekt obsega tri bloke, vsak blok je razdeljen na tri ploskve (30 x 30 m), ki so jim bile naključno določene obravnave: klasično izbiralno redčenje (A), izbiralno redčenje s stalnimi izbranci (B) ter brez ukrepanja (C). Na ploskvahso bila izmerjena vsa drevesa s prsnim premerom, ki je enak oziroma večji od 10 cm, določene so bile prostorske koordinate dreves in ocenjeni drevesni znaki (status, krošnja, vitalnost). Raziskava prikazuje rezultate analize ničelnega stanja sestojev. Ničelna povprečna lesna zaloga analiziranih sestojev je bila 221 m3 ha-1 (od 119 do 317 m3 ha-1), povprečno število dreves na ploskvah pa je bilo 1533 ha-1 (od 1100 do 2056 ha-1). V sestojih A je bilo izbranih 274 izbrancev ha-1 (od 178 do 356 ha-1) in odkazanih 530 konkurentov ha-1 (od 367 do 622 ha-1), v sestojih B pa 89 izbrancev ha-1 (od 78 do 100 ha-1) in 326 konkurentov ha-1 (od 267 do 433 ha-1). Med bloki so za več sestojnih parametrov ugotovljene značilne razlike. Med obravnavo A in B so ugotovljene značilne razlike v številu odkazanih dreves na izbranca ter indeksu asimetričnosti krošenj izbrancev.

• Language: Slovenian
• Keywords: redčenje, tipi redčenj, bukovi drogovnjaki, izbranci, konkurenti, Pišece
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [B. Pajk]
• Year: 2011
• Number of pages: 66 f.
• PID: 20.500.12556/RUL-16039
• UDC: 630*24(043.2)=163.6
• COBISS.SI-ID: 3293862
• Publication date in RUL: 11.07.2014

Secondary language

• Language: English

Abstract

A research site for long-term monitoring of the thinning effects on the development of beech stands was formed in the Pišece forest management unit. The research site consists of three blocks, each block is divided into three plots (30 x 30 m). A treatment was randomly assigned to each plot: classical selective thinning (A), selective thinning with fixed crop trees (B) and control plot (C). All trees with a breast diameter equal to or greater than 10cm were measured, coordinates of trees within the plots were recorded and tree parameters were assessed (status, crown, and vitality). The study presents an analysis of the stand parameters prior to the thinning. Average growing stock GS (min-max) of the plots was 221 (119-317) m3 ha-1, average number of trees N (min-max) was 1533 (1100-2056). In A stands 274 (178-356) crop trees ha-1 were selected and 530 (367-622) competitors ha-1 were marked for removal. In the B stands there were 89 (78-100) crop trees ha-1 and 326 (267-433) competitors ha-1 respectively. The differences between the blocks were statistically confirmed for a number of stand parameters. Differences between treatments were significant for the number of competitors per crop tree and crown asymmetry index of the crop trees.