Mechanical properties of secondary quality beech (Fagus sylvatica L.) and oak (Quercus petraea (Matt.) Liebl.) obtained from thinning, and their relationship to structural parameters

2021 ◽  
Vol 78 (3) ◽  
Author(s):  
Citra Yanto Ciki Purba ◽  
Jana Dlouha ◽  
Julien Ruelle ◽  
Mériem Fournier
Keyword(s):  
Mechanical Properties ◽  
Fagus Sylvatica ◽  
Structural Parameters ◽  
Quercus Petraea ◽  
Secondary Quality ◽  
Fagus Sylvatica L

The growth and form of ash (Fraxinus excelsior) in mixture with cherry (Prunus avium), oak (Quercus petraea and Quercus robur), and beech (Fagus sylvatica)

2004 ◽  
Vol 34 (11) ◽  
pp. 2340-2350 ◽  
Author(s):  
Gary Kerr
Keyword(s):  
Interspecific Competition ◽  
Fagus Sylvatica ◽  
Quercus Robur ◽  
Prunus Avium ◽  
Relative Yield ◽  
Quercus Petraea ◽  
Fraxinus Excelsior ◽  
Stem Form ◽  
Pure Species ◽  
Fagus Sylvatica L

The effects of mixing ash (Fraxinus excelsior L.) with cherry (Prunus avium L.), oak (Quercus petraea (Matt.) Lieb., and Quercus robur L.), and beech (Fagus sylvatica L.) were investigated using a balanced two-component competition experiment. In general, two patterns of growth were observed. Firstly, in the ash–cherry experiment, two rapidly growing species altered their stem form and showed a plastic response to interspecific competition, and both species maintained a position in the upper canopy. Secondly, in the ash–oak and ash–beech experiments, a two-tier canopy formed with ash in the upper canopy, and interspecific competition resulted in an early nursing effect on the ash. In both patterns of growth, competition affected stem diameter and the shape of the tree with few, and only short-lived, effects on height. The maximum relative yield totals were 1.78 for ash–cherry, 1.77 for ash–oak, and 1.44 for ash–beech, indicating that the mixtures studied may be more productive in their early phase of growth than equivalent areas of pure species.

scholarly journals Photosynthetic activity of Fagus sylvatica L. and Quercus petraea (Matt) Liebl. in a mixed stand at Maljen mountain

2005 ◽  
Vol 57 (4) ◽  
pp. 305-306
Author(s):  
Zorica Popovic ◽  
Aleksandar Mijovic ◽  
Branko Karadzic ◽  
Miroslava Mijatovic ◽  
S. Skoric
Keyword(s):  
Gas Exchange ◽  
Fagus Sylvatica ◽  
Water Saturation ◽  
Water Status ◽  
Beech Forest ◽  
Quercus Petraea ◽  
Tree Canopy ◽  
Forest Belt ◽  
Water Saturation Deficit ◽  
Fagus Sylvatica L

Estimation of the photosynthetic performance of co-existing tree species with pronounced differences in ecophysiological context (Aranda et al. 1996 Leuschner et al. 2001) could provide insight into their vitality and competitive abilities at a particular site. Gas exchange, composition of photosynthetic pigments, and the water status of beech (Fagus sylvatica L) and sessile oak (Quercus petraea (Matt) Liebl) were studied in the present work. The investigation was performed on Mt. Maljen (Western Serbia, near the town of Mionica) at an altitude of 950 m, in an ecotope within the confines of the mountain's beech forest belt. Codominant samplings [three of each species, 30-years old (n=6), 10-12 m high] were selected for the measurements, which were conducted on fully developed leaves from the out?ermost branches and from the innermost canopy. Photosynthetic measurements were performed using an LI-6200 closed photo?synthesis system (LI-Cor. Inc, Lincoln, NE, USA), while irradiance was detected with a selenium cell mounted on the leaf chamber. Parameters of gas exchange are expressed on the basis of leaf area, using the AREAMETER software (Karadzic et al. 1999). Chlorophyll content was spectrophotometrically determined based on light absorption of the solution obtained after extraction with dMSO (Hiscox and Israelstam, 1979). The midday water saturation deficit was determined according to Turner (1981). For data analysis, we used the Statistic for Windows program package. The ANOVA one-way break?down was applied to compare differences within (leaves inside vs. leaves outside the surface of the tree canopy) and between species for all investigated parameters at the 0.05 level of significance.

Sign in / Sign up

Export Citation Format

Share Document