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

Kalajžič, Žiga (author), Hladnik, David (mentor)

Leta 2007 smo ponovno izmerili drevesa na dveh raziskovalnih ploskvah na Pokljuki, ki so jih postavili v začetku petdesetih let prejšnjega stoletja. Vsakemu drevesu smo izmerili prsni premer in ocenili razvojno težnjo, vitalnost, dolžino krošnje, poškodbe ter osutost krošenj. Na ploskvah smo izmerili tudi količino odmrlega lesa. Lesna zaloga na ploskvah je višja za 1/5 od povprečja v rastiščnogojitvenih razredih subalpinska smrekovja in smrekovja mrazišč v prisojnih legah. Na ploskvi 40 je zgradba sestoja enomernain se ni spremenila od prvega merjenja. Zgradba sestoja na ploskvi 70 se je v zadnjih petdesetih letih spremenila iz raznomerne v enomerno. Poškodbe vplivajo na vitalnost dreves. Mehanske poškodbe, osutost in dolžina krošnje močno vplivajo na debelinski prirastek.

• Language: Slovenian
• Keywords: zgradba sestoja, debelinski prirastek, smreka, Picea abies, osutost krošenj, Pokljuka
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [Ž. Kalajžič]
• Year: 2008
• Number of pages: IX, 45 str.
• PID: 20.500.12556/RUL-15737
• UDC: 630*22:630*52+630*17(043.2)=163.6
• COBISS.SI-ID: 2320294
• Publication date in RUL: 11.07.2014

Secondary language

• Language: Unknown

Abstract

In 2007 we have repeated the measurement of trees on two research plots on Pokljuka, which were established in early fifthies of the previous century. We have measured diameters of trees and assessed their development tendency, tree vitality, crown lenght, crown defoliation and damages. On research plots we have also measured the quantity of dead wood. Growing stock on plots is 20 % higher than the average in the same forest management class in the Pokljuka forest management unit. On a research plot number 40 the composition of the stand remains uniform since the first measurement. The composition of the stand on a research plot number 70 has changed from uneven-aged to uniform. Damages on trees are effecting vitality. Damages, defoliation and crown lenght have an influence on the intensity of the diameter increment.