Razvoj gozdov v gozdnogospodarski enoti Leskova dolina : diplomsko delo - univerzitetni študij

Kogovšek, Tadej (author), Bončina, Andrej (mentor)

Avtor je analiziral razvoj gozdov na ravni oddelkov v gozdnogospodarski enoti Leskova dolina od leta 1912 do danes. Primerjal je podatke iz načrtov za osem urejevalnih obdobij z začetkom veljavnosti leta 1912, 1936, 1954, 1964, 1974, 1984, 1994 in 2004. Po oddelkih je spremljal razvoj lesne zaloge, razmerje mediglavci in listavci, spremembo prirastka, debelinske strukture in sečnje. Vdveh oddelkih je analiziral starost posekanih dreves. Lesna zaloga je v preučevanem obdobju stalno naraščala. Delež iglavcev v lesni zalogi je do leta1936 naraščal, v obdobju do leta 1974 je variiral, potem je začel upadati.Delež jelke se je po letu 1974 stalno zmanjševal, povečeval pa se je delež bukve in smreke. V letu 2004 je delež listavcev dosegel 30 % celotne lesne zaloge. Na krepitev listavcev v lesni zalogi je vplivalo opuščanje prebiralnega načina gospodarjenja in slabša vitalnost jelke. Spremembe prirastka so bile v tesni korelaciji s spremembo lesne zaloge. Prirastek iglavcev je bil v preučevanem obdobju vseskozi večji od prirastka listavcev. Debelinska struktura se je v preučevanem obdobju 92 let spremenila. V letu 1912 je bila večina lesne zaloge v debelinskih razredih A (10-30 cm) in B (30-50 cm). V analiziranem obdobju se je delež lesne zaloge v razredu C povečal. Sečnja je bila v preteklosti odvisna od socialnega in gospodarskega položaja ljudi, po letu 1974 se je ustalila. Analiza starosti dreves je pokazala, da so se dominantne jelke pomladile v obdobju 1836-1842, smreke pa vobdobju med letoma 1831 in 1849.

• Language: Slovenian
• Keywords: jelovo-bukov gozd, razvoj gozdnih sestojev, drevesna sestava, sestojna zgradba, lesna zaloga, gozdnogospodarski načrt, Leskova dolina
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [T. Kogovšek]
• Year: 2008
• Number of pages: IX, 75 str.
• PID: 20.500.12556/RUL-15612
• UDC: 630*22+630*62(497.4 Leskova dolina)(043.2)=163.6
• COBISS.SI-ID: 2223014
• Publication date in RUL: 11.07.2014

Secondary language

• Language: Unknown

Abstract

The analysis of development of forest on the level of departments in Leskova Valley forest management unit from 1912 until today has been made. The data from management plans for eight regulative periods have been analysed. In the departments, the monitoring of development of growing stock, the share of coniferous and deciduous trees, the changes of increment, the diameter structure and cut has been made. In two departments also the analysis of the age of cut trees has been made. Growing stock has been increasing throughout the monitoring time. Up until 1936 the share oscillated and then after 1974 the share of conifers regressed. Since 1974 the share of fir has been decreasing, while the share of beech and spruce has been increasing. In 2004, the share of deciduous trees represented 30 % of growing stock. The increment of the share of deciduous trees was influenced by the omission of the selection system and fir losing vitality. Throughout the monitoring time the increment of the coniferous threes was larger than the increment of the deciduous trees. In 92 years of the monitoring time also the diameter structure changed. In 1912 the most of the growing stock was in the diameter class A and B. Later the share of the growing stock in the diameter class C increased. The analysis of trees age showed that rejuvenation of dominant fir trees between 1836 and 1842 and spruce trees in the period from 1831 to 1849.