We set up a free-air ozone (O(3)) exposure system for determining the photosynthetic responses of Siebold's beech (Fagus crenata) and oak (Quercus mongolica var. crispula) to O(3) under field conditions. Ten-year-old saplings of beech and oak were exposed to an elevated O(3) concentration (60 nmol mol(-1)) during daytime from 6 August to 11 November 2011. Ozone significantly reduced the net pho...

Reforestation with autochthonous species should take into account the preservation of the temporal variability and the geographic structure of genetic diversity in forest species. In order to provide empirical data about the suitability of methods of sampling material, genetic comparison of 10 beech populations (at least 40 trees per population) and their progenies (seeds of 10 mother trees per...

Abstract Determining forest volume increment, the potential of wood production in natural forests, is a complex issue but fundamental importance to sustainable management. increment through growth and yield models necessary for proper management future prediction characteristics (diameter, height, volume, etc.). Various methods have been used determine productive capacity amount acceptable harv...

Bu çalışmanın amacı; kayın ağaçlarının yetiştiği ortamlardaki bazı ekosistem değişkenleriyle odunun fiziksel ve mekanik özelliklerinin nasıl değiştiğini ortaya koymaktır. Araştırma sahaları, Batı Karadeniz meşcerelerinden belirlenmiştir. Çalışma için kayının yayıldığı alt rakımdan üst rakıma kadar farklı yükselti bakılardan 6 saha seçilmiştir. altı sahanın her birinde sahayı temsil edecek 100 m...

Bu çalışmada, bazı antibakteriyel nano malzeme katkılı verniklerin ahşap malzemede katman sertliğine etkisi araştırılmıştır. Sarıçam (Pinus sylvestris L), Doğu kayını (Fagus orientalis Lipsky), sapsız meşeden (Quercus petraea Liebl.) hazırlanan örneklere, %0,1, %0,3 bor (NaB) ve gümüş (NaAg) ilave edilmiş su bazlı sentetik vernik ile ASTM D-3023’e göre verniklenmiştir. Vernikleme işleminden son...

This study investigated the bending moment resistance of T-type, two-pin dowel joints connected with Scotch pine (Pinus slyvestris), beech (Fagus orientalis), chestnut (Castanea sativa) and oak (Quercus petraea) reinforced basalt glass woven fabric. The tests was carried out to determine joints. As a result test, it determined that one layer two surfaces reinforce fiber fabrics increases mechan...

Fagus grandifolia (American Beech) is uncommon along the coast of southern New England, but occasionally forms unusual monodominant stands with higher beech abundance than is typical for inland areas. This study documents the distribution of beech on Cape Cod and nearby coastal islands, and evaluates environmental and historical factors that are likely to infl uence its distribution. Tree-ring ...