Naslov
Crown morphology of pedunculate oak and common hornbeam trees in stands of different age

Autori
Dubravac, Tomislav ; Dekanić, Stjepan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Sustainable Use of Forest Ecosystems / Rakonjac, Ljubinko - Beograd : Institute of Forestry, 2006, 67-67

ISBN
86-80439-05-3

Skup
Sustainable Use of Forest Ecosystems

Mjesto i datum
Donji Milanovac, Srbija, 08.11.2006. - 10.11.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
pedunculate oak; common hornbeam; crown size; crown shape; horizontal crown projection

Sažetak
Total number of 47 permanent sample plots were established in stands of pedunculate oak and common hornbeam at different developmental stages. Spatial distribution and horizontal crown projections were recorded, and diameter at breast height (DBH), length of the stem and the length of the crown were measured for all trees above 2.5 cm of DBH. Average crown shape for each tree species in different age classes was modeled using digitalized horizontal crown projections and means of statistical analysis. Diameter of the pedunculate oak crown increases from top of the tree downwards to its maximum value between 1/3 and 1/2 of crown length (measured from the base of the crown). Part of the pedunculate oak crown exposed to the sunlight is always smaller then half of the crown. Maximum crown diameter of common hornbeam is somewhat lower, at approximately 2/3 of the crown length, thus making the part of the crown exposed to the sunlight always greater then half. The shape and size of tree crowns are important for practical forestry, but they also play an important role in diverse models of energy and matter fluxes within the forest ecosystems and between forest ecosystems and the environment. Because of its main function – deployment and spatial organization of assimilation organs within the stand space – shape and size of tree crowns are indispensable in complex calculations of leaf area index, light absorption, precipitation interception, etc.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo, Biotehnologija

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