Báo cáo lâm nghiệp: "Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour parameters" pptx

... parts: Research on individual parameters for cutting power of woodcutting process by circular saws J. K, M. M Department of Forest and Mobile Technology, Faculty of Environmental and ... mass of a work- piece by a cutting- wedge during the deformation of a mass in the surroundings of a cutting edge, – forces necessary for deflection of chips...

Ngày tải lên: 07/08/2014, 03:22

... Program of China No. 201104070. Short Communication Differences in the structure, species composition and diversity of primary and harvested forests on Changbai Mountain, Northeast China DONGKAI ... species would not become dominant in the forest. e results of the multi-response per- mutation procedures (MRPP) further confirmed the dissimilari...

Ngày tải lên: 07/08/2014, 03:22

... Agriculture of the Czech Republic, Project No. MZe 0002070201. Intensively fertilised seedlings of the beech (Fagus sylvatica L.) for artificial regeneration of the spruce stands in the process of conversion A. ... demand for high-quality planting material of beech much more quickly. In the technology of growing the containerised plant...

Ngày tải lên: 07/08/2014, 04:20

... growth of rooted cuttings of beech in the course of forest reproduction provided these findings: – Test experiments proved the usability of rooted cuttings of beech for planting in the forest. ... propagation of European beech (Fagus sylvatica L.) by cuttings were published Supported by the Ministry of Agriculture of the Czech Republic, Project N...

Ngày tải lên: 07/08/2014, 10:21

... problem, for instance comparing Norway spruce (Picea abies [L.] Karst.) and European beech (Fagus sylvatica L.; S 2002), Norway spruce, Scots pine (Pinus sylvestris L.) and European beech (F ... E., 2007. Variation in fine root biomass of three European tree species: beech (Fagus sylvatica L.), Norway spruce (Picea...

Ngày tải lên: 07/08/2014, 10:22

... P1 and P2 together, confirmed that damage was an explanatory factor which was much sig- nificant than the other variables and factors available. Thus overall, the damage factor had both a statistical ... A risk of fork emergence was calculated for each of the damage levels. The relative risk of fork emergence, with its confidence limit (at 5% of risk level),...

Ngày tải lên: 07/08/2014, 16:20

... TSR in the oak, mixed and beech stands. The annual heterotrophic respiration of the forest floor ac- counted respectively for 68, 74 and 51% of the annual FFR in the oak, mixed and beech stands ... 10.1051/forest:2006098 Original article Soil carbon dioxide efflux in pure and mixed stands of oak and beech Mathieu J * , Frộdộric A , Franỗois J,Nicol...

Ngày tải lên: 07/08/2014, 16:20

... separating peripheral wood (PW), red heartwood (RH) and non red heartwood (NRH) points (mean for 342 boards). Colour variations of European beech wood 631 Figure 6 illustrates these variations of colour for L* only ... 10.1051/forest:2005063 Original article Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour paramet...

Ngày tải lên: 08/08/2014, 00:22

... (+6.1% for the modulus of elasticity and +7.09% for the bending strength). The swelling behaviour of the beech with red heart is slightly increased. The hygroscopic behaviour of the red- hearted ... determine the quantitative colour differences of normal and red- hearted wood and the behaviour of the colour differ- ence during xenon-arc exposu...

Ngày tải lên: 08/08/2014, 00:22

... H., Seasonal variations of glutathione reductase and glutathione in leaves and leaf buds of beech trees (Fagus sylvatica L .) , Phyton 32 (199 2) 99–102. [31] Polle A., Rennenberg H., Photooxidative ... 10.1051/forest:2003005 Original article The influence of microclimate and tree age on the defense capacity of European beech (Fagus sylvat...

Ngày tải lên: 08/08/2014, 01:21

... and VIII). 4. CONCLUSION This study deals with the response of the vascular ground vegetation after base cation and P fertilization in European beech and sessile oak stands located on acid brown ... the ground vegetation response between the beech and oak stands. Acknowledgements: This study was conducted with the support of the “Division Natu...

Ngày tải lên: 08/08/2014, 14:21

... contamination of soils in forest ecosystems of the Federal Republic of Germany. Eur J For Pathol 19, 47-53 Büttner C, Nienhaus F (1989b) Virus contamination of waters in two forest ... dsRNA in diseased Quercus roburwith chlorotic ringspots and mottle, prominent dsRNA bands of 1.5 to 2.0 kbp were obtained in all 26 investigated plants...

Ngày tải lên: 08/08/2014, 18:21

... Q frainetto, the latter resulting to be the most heavily declining species (Sicoli et al, 1993). Original article Observations on Armillaria occurrence in declining oak woods ... pre- dominates on declining oaks in southern Italy, further surveys were carried out in numerous oak woods and additional Armillaria isolates were collected....

Ngày tải lên: 08/08/2014, 18:21

... organization of the genetic variation in beech in the Czech Republic. From the methodological point of view, the best solution for the delineation of genetically homogeneous zones ... Seed zones for European beech (Fagus sylvatica L.) in the Czech Republic were proposed on the basis of isozyme polymorphism. Twenty b...

Ngày tải lên: 09/08/2014, 04:20

... plant cuticular membranes. An overview. Studies on Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) needle cuticles S. Huttunen M. Turunen J. Reinikainen Department ... Results The young needles of Norway spruce (Picea abies L. Karst.) develop in early June under northern Finnish conditions, the Sc...

Ngày tải lên: 09/08/2014, 04:20