Razvoj gozdnih sestojev na raziskovalnih ploskvah v alpskem gozdu smreke na Pokljuki : diplomsko delo - visokošolski strokovni študij

Porenta, Gašper (author), Hladnik, David (mentor)

V mesecu juniju leta 2008 smo na dveh raziskovalnih ploskvah na Pokljuki izvedli izmero dreves, da bi dopolnili analizo razvoja sestojev na ploskvah. Vsem drevesom na dveh raziskovalnih ploskvah smo izmerili premer, kakovostne znake, naključno izbranim pa tudi višino. Prva merjenja na dveh ploskvah so bila izvedena v letih 1949 in 1963. Raziskovalni ploskvi sta bili veliki 1 ha in 0,8 ha in pripadata razvojni fazi starejšega in mlajšega smrekovega debeljaka. Lesna zaloga je visoka, na prvi raziskovalni ploskvi znaša 737,8 m3/ha, na drugi pa 1028,6 m3/ha. Zgradba sestojev se v zadnjih desetletjih ni spremenila in ostaja enomerna. Osutost iglic in dolžina krošnje dreves vplivata na debelinski prirastek. Glavni nosilec prirastka so najdebelejša drevesa. Glede na sloj, ki ga drevesa zasedajo, se spreminja dolžina krošenj, stopnja osutosti in vitalnost. Na vitalnost dreves pa vplivajo tudi poškodbe debla.

• Language: Slovenian
• Keywords: gozdni sestoji, razvoj gozdnih sestojev, zgradba sestojev, lesna zaloga, debelinski prirastek, osutost krošnje, smreka, Picea abies, vzorčne ploskve, Pokljuka
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [G. Porenta]
• Year: 2008
• Number of pages: 38 str.
• PID: 20.500.12556/RUL-15687
• UDC: 630*22:630*17:630*61:630*48+630*52(043.2)=163.6
• COBISS.SI-ID: 2296742
• Publication date in RUL: 11.07.2014

Secondary language

• Language: Unknown

Abstract

In June 2008 we have carried out the measurements on two research plots on Pokljuka in order to complement the analysis of the forest stand development on research plots. We have measured diameters of trees, their quality signs and on for randomly chosen trees also the height. The first measurements on these two plots were carried out in years 1949 and 1963. The size of each plot was 1 and 0,8 hectares. They belong to the older and younger spruce largetimber stand stage of development. The growing stock is on a high level: on the first research plot it amounts to 737,8 m3/ha and on the second one 823,1 m3/ha. The composition of the stands did not change in the last 50 years, it still remains even-aged and uniform forest structure. As expected the defoliation and lenght of crown have had an influence on the intensity ofthe diameter increment. The main carriers of the diameter increment are the thickest trees. The lenght of crown, the degree of defoliation and vitality differ according to social status.Vitality of trees has also been effected by the damages.