Báo cáo lâm nghiệp: "Linking intra-tree-ring wood density variations and tracheid anatomical characteristics in Douglas fir (Pseudotsuga menziesii (Mirb ) Franco)" pot
Báo cáo lâm nghiệp: "Linking intra-tree-ring wood density variations and tracheid anatomical characteristics in Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)" pot
... explains intra-tree-ring wood density change, and ( 2) sorting out tracheid anatomical characteristics in order of im- portance. The work was carried out with Douglas fir (Pseudotsuga menziesii (Mirb. ) ... diminution should Ann. For. Sci. 63 (200 6) 699–706 699 c INRA, EDP Sciences, 2006 DOI: 10.1051/forest:2006050 Original article Linking intra-tre...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: " Influence of stand density, thinning and elevated CO2 on stem wood density of spruce" pot
... (62 %) 3.13 (56 %) 2.77 (56 %) Ht 5 1.45 (40 %) 1.09 (32 %) 1.42 (44 %) 1.51 (46 %) 2.08 (48 %) 2.14 (47 %) 2.43 (43 %) 2.04 (41 %) Ht 7 0.87 (24 %) 0.55 (16 %) 0.79 (24 %) 0.90 (28 %) 1.26 (29 %) 1.63 (36 %) ... to stand density and thinning. MATERIALS AND METHODS Site and stand description: ere were two vari- ants of glass domes...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp:"Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species" pot
... green wood is prevailing to determine peeling and machining ability [10]. In particular, influence of temperature has to be taken into consideration [1, 8]. Veneer formation during slicing or ... properties of tropical woods is of prime importance for the development of wood industry in French Guyana. Peeling and machining ability is usually correlated to basic density of woods...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "Quality of wood in the stands of poplar clones" docx
... pulp industry and class D1 includes fuel wood. e volume of larger decay or cavity, mainly in lower parts of stems, was included in waste. In 2007 the standard STN 48 0056 was amended and traditional ... within 2/5 of butt end. D1 – wood of worse quality than in C3 class intended as fuel wood. Waste – volume of decayed wood that is not suitable even as fuel wood. Ac...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Reduction of wood hygroscopicity and associated dimensional response by repeated humidity cycles" doc
... gymnosperms, Pinus sylvestris L. (Ps), Pinus pinaster Ait. (Pp), Pinus insignis Dougl. (Pi); 4 angiosperms, Pop- ulus spp. (pop); Quercus pyrenaica Willd. (Qp); Entandrophragma cylindricum Sprague (Ec); ... give the swelling strains in radial and tan- gential directions, respectively, calculated using equation ( 2), for both non-aged and aged wood. In all cases, the swelling of age...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp:"The relationship between vegetation management and the wood and pulping properties of a Eucalyptus hybrid clone" pdf
... weeded and the latter three combined) on growth and wood density on Eucalyptus grandis, an increase in wood density with increased growth rate was recorded [46]. A study was carried out on wood density ... that wood volume, pulp Table III. Summary of simple linear regression of a) density (kg m −3 ) (excluding hot water and ethanol benzene extractives) and b) ext...
Ngày tải lên: 08/08/2014, 01:21
Báo cáo lâm nghiệp: "Simulation of wood deformation processes in drying and other types of environmental loading*" ppt
... of Finland, Research notes 1276, Espoo, Finland Thelandersson S, Morén T (199 0) Tensile stresses and cracking in drying timber. In: IUFRO/5.02 TimberEn- gineering Meeting. ... to calculate moisture flow in wood. In: International Conference on Wood Drying. Understanding the Wood Drying Process: A Synthe- sis of Theory and Practice, Vienna,...
Ngày tải lên: 08/08/2014, 18:21
Báo cáo lâm nghiệp: "Effects of seedling density on the growth of Corsican pine (Pinus nigra var. maritima Melv.), Scots pine (Pinus sylvestris L.) and Douglas-fir (Pseudotsuga menziesii Franco) in containers" ppt
... practice, seedling density and cell volume are interrelated since selecting a larger container size results in both an increase in volume and a decrease in seedling density. However, there ... croissance du pin noir de Corse (Pinus nigra var. maritima Melv .), du pin sylvestre (Pinus sylvestris L .) et du sapin de Douglas (Pseudotsug...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: " Scots pine responses to number and density of inoculation points with Leptographium wingfieldii Morelet, a bark beetle-associated fungus" docx
... zones in the sapwood of conifers. I. Induction of drying in standing trees and logs by Fomes annosus and extracts of infected wood, Eur. J. For. Pathol. 6 (197 6) 372-381. [8] ... total number of inoculation points, as a large increase of blue stain- ing was observed in the sapwood with an increasing amount of inoculation points, at a d...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: " Floodplain forests of Litovelské Pomoraví and their management" pps
... (floodplain hardwood forest) and black poplar (floodplain softwood forest) by means of large saplings in those areas where reproduction is ensured by means of clear cutting, acorn seeding should ... (NNR), natural reserves (NR) and natural monuments (NM) in the Litovelské Pomoraví PLA e name of reserve Type Area (ha) Predominant habitat Ramena řeky Moravy NNR 71.19 meandering river...
Ngày tải lên: 07/08/2014, 03:22