Báo cáo lâm nghiệp: " A dendroecological reconstruction of disturbance in an old-growth Fagus-Abies forest in Slovenia" docx

Ngày tải lên: 07/08/2014, 03:22

... 63 JOURNAL OF FOREST SCIENCE, 53, 2007 (Special Issue): 63–68 Web-spinning sawflies of the genus Cephalcia Panzer (Hymenoptera, Pamphiliidae) in the Picea abies forests of the Beskidy Mountains (Poland) M. ... importance. Keywords: web-spinning sawfly; Picea abies; Cephalcia; Beskidy Mountains; Poland e increased level of the occurrence of w...

Ngày tải lên: 07/08/2014, 03:22

... study of the synusiae of small terrestrial mammals of pheasantries in southern Moravia is therefore aimed at monitoring the effect of specific properties of these habitats (high diversity of biotopes, ... supplementary food in the form of feeding for pheasants. Moreover, in the region of southern Moravia, pheasantries represent isolated areas of woo...

Ngày tải lên: 07/08/2014, 03:22

... is again a theme of another research inclusive of determination of the elastic constant according to separate layers. Appropriate tests to determine parameters men- tioned above will be the ... density of plywoods significantly a ects the capacity of the material to dampen noise. To achieve good sound-proof properties materials of a density of 630 kg/m 3...

Ngày tải lên: 07/08/2014, 04:20

... with a total area of 0.75 ha (Fig. 1) were mapped within the range of 22 individual beeches (their average spacing was about 16 m) on an area of 1.9 ha. Ap- proximately 40% of the stand area ... estima- tion of seed dispersal trees – an example of seed dispersal of Picea abies, Abies alba and Fagus sylvatica. Austrian Journal of Forest Science, 123: 103–120. M...

Ngày tải lên: 07/08/2014, 10:21

... of plywood is available. Plywoods differ in many factors. CONCLUSION e aim of the paper was to propose the method- ology of testing the abrasion resistance of combined water-proof plywood materials ... aim of the paper was to propose the methodology of testing the abrasion resistance of combined water-proof plywood materials with the phenol...

Ngày tải lên: 07/08/2014, 10:21

... be- tween the region of Jablunkov Pass and the rest of A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov ... detected in the area of the Jablunkov Pass in comparison with the remaining area of NFR. e spatial distinctness of...

Ngày tải lên: 07/08/2014, 10:21

... higher initial costs of mechanized harvesting machines, larger diameters and crowns of hardwoods, and the relatively steep terrain in Caspian forests, manual felling with a chainsaw is still ... a continuous time study on manual harvesting systems with a chainsaw model Stihl in a Caspian hardwood forest. (2) Estimate the production rates and costs o...

Ngày tải lên: 07/08/2014, 10:21

... 1902. Measurement of standing tree shape by photographic method 635 Figure 4. 3D reconstruction of the 70-year-old Norway spruce tree. Figure 5. Photographic method estimates of the local slope ... position of the standing trees. The disadvantages of this method are that a minimum of three targets per log must be attached to the stem of standing trees, a...

Ngày tải lên: 07/08/2014, 16:21

... thinning intensity depends on the number of the thinning, the intensity increasing from the first thinning to the fourth. The intensity of the first thinning is around 20% of basal area, and in the ... (% of number of trees); ◦ Percentage of low thinning (% of trees removed after system- atic thinning). – For the other thinnings ◦ Number of years since the...

Ngày tải lên: 07/08/2014, 16:21

... dendroecological reconstruction of disturbance in an old-growth Fagus-Abies forest in Slovenia Thomas A. Nagel a * ,TomL evanic b ,JurijDiaci a a University of Ljubljana, Biotechnical Faculty, Department of ... depth can vary between 30 and 70 cm depend- ing on micro-topographic position. The climate is a combination of continental and Mediterranean, with an...

Ngày tải lên: 07/08/2014, 16:21

... 9 plant species) . However, ten years after logging, species richness was always significantly higher than before the logging. Figure 2. Evolution of mean species richness after logging of a chestnut ... CONCLUDING REMARKS In our study, the temporary large increase of plant species richness observed especially after clear-cutting, but also after thinning,...

Ngày tải lên: 08/08/2014, 00:22

... 10.1051/forest:2003002 Original article Optimising the management of Scots pine (Pinus sylvestris L.) stands in Spain based on individual-tree models Marc Palahí a * and Timo Pukkala b a European Forest Institute, ... simulation-optimisation system, SPINE, for the management of Pinus sylvestris L. stands in Spain. The simulation sub-system is b...

Ngày tải lên: 08/08/2014, 01:21

... correlated; March and April mini- mum temperatures, May and June maxi- mum temperatures, July and August maxi- mum temperatures are negatively correlated (table V). The same ... Original article A dendroecological study in a declining oak coppice stand E Amorini M Biocca a MC Manetti E Motta 1 Istituto Sperimentale per la Selvicoltur...

Ngày tải lên: 08/08/2014, 18:21

... Original article A dendroclimatic analysis of Pinus densiflora from Mt. Chiri in southern Korea Won-Kyu Park* Ram R. Yadav* Department of Forest Products, College of Agriculture, ... (1801-1996) tree-ring chro- nology of Korean red pine was developed from the Chiri mountain range in south- ern Korea. Cross-dating of samples revealed t...

Ngày tải lên: 09/08/2014, 04:20