Báo cáo lâm nghiệp: "The contribution of wood products to carbon sequestration in Portugal" pptx
Báo cáo lâm nghiệp: "The contribution of wood products to carbon sequestration in Portugal" pptx
... 0.01 0.02 Carbon sequestration in wood products 907 delimited by the minimum and maximum estimates of carbon sequestration. Even in the minimum estimate of the stock-change approach, wood products ... burning of fuel- wood, wood processing residues, and short-lived wood prod- ucts. Another part of the carbon remains stored in long-lived wood products...
Ngày tải lên: 08/08/2014, 00:22
Báo cáo lâm nghiệp: "The contribution of remote sensing to the assessment of drought effects in forest ecosystems" ppsx
... for a better understanding, monitoring and mod- elling of the carbon and water cycles as driving forces of global warming. A lot of remote sensing studies are carried out to retrieve LAI and its ... the sensitivity of canopy reflectance to EWT in the SWIR domain was very im- portant, more than 65% of the total sensitivity. In this context, the monitoring of temporal evolu...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo lâm nghiệp: "The role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forest" pptx
... placement of uropodids on the bark beetle vector. A total of 3,302 adults of H. cunicularius were caught into flight interception traps, of which 529 (16%) vectored a total of 1,020 individuals ... = 403) in Bielovodská dolina. Of the 3,302 individuals of H. cunicularius sampled in the study area, 529 (16%) were vectoring a total of 1,020 individuals and four species o...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: " The influence of Picea abies on herb vegetation in forest plant communities of the Veporské vrchy Mts" ppt
... use of CCA for the investigation of par- tial species response to the proportion of spruce. e direct species – spruce relation was investigated by CCA which took into account significant factors ... 7-point scale of abundance and dominance adjusted by B et al. (1964) was used. e vertical structure of phytocoenoses was classified following the layers in TURBOVEG soft-...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: " The effects of cutting regimes on natural regeneration in submountain beech forests: species diversity and abundance" pdf
... abundance of both one-year-old and older seedlings. e abundance of beech seedlings was initially increasing with increasing cutting intensity, and, having reached the peak on plot M (medium intensity), ... consisting of beech and willow. e results of ANOVA in Table 3 indicate a signifi - cant in uence of different cutting operations on the number of all regenerating individu...
Ngày tải lên: 07/08/2014, 10:22
Báo cáo lâm nghiệp: "The effects of summer exposure to ozone on the frost hardiness after the vegetation period of Norway and Sitka spruce seedlings" doc
... concentration of ozone using the same fumigation system. In this case, although there was no effect of the pollu- tant on the attainment of deep winter hard- iness, the sensitivity ... to a temperature of about - 19°C, although there was a delay in hardening in those shoots that had been exposed to ozone. For the Sitka spruce, there w...
Ngày tải lên: 09/08/2014, 04:20
Báo cáo lâm nghiệp: "The influence of selected factors on energy requirements for plain milling of beech wood" ppsx
... most intensive above 30 ms –1 ; an increase in the value of the rake angle causes a decrease in cutting input. So, with regard to the acquired results of cutting input, in plain milling it ... (2009): e in uence of the selected factors on the cutting input power in sawing frozen beech wood. In: Proceedings 3 rd ISC Woodworking Technique. Zalesina, September 2009....
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Genetic variation of wood density components in a radiata pine progeny test located in the south of Chile" pps
... / bois initial / bois final 1. INTRODUCTION Genetic improvement of radiata pine has been conducted in Chile since the late 70’s, mainly by breeding of parents selected for their outstanding growth ... proportion of juvenile wood within the stem will increase. In New Zealand, the real- ized genetic gain in stem straightness and stem diameter growth in radiata pine has already p...
Ngày tải lên: 08/08/2014, 00:21
Báo cáo lâm nghiệp: "Relative efficiency of alternative methods to evaluate wood stiffness in the frame of hybrid larch (Larix × eurolepis Henry) clonal selection" potx
... be used to increase the intensity of selection to obtain a higher indirect gain. If felled trees are available, ultrasonic speed measured on log offers a high indirect gain without needing additional money ... radial faces of the same ring, in the same orientation (North and South): 2 measurements were carried out in the heartwood, and 2 in the sapwood. The next step was the saw...
Ngày tải lên: 08/08/2014, 01:22
Báo cáo lâm nghiệp: "The results of manipulated experiments with inoculation of Ips typographus (L., 1758) to spruce trees under various levels" potx
... individuals were collected. ese in- dividuals were put into refrigerator into wet envi- ronment and later transported to lab. After several days, the number of individuals was enough high to ... forest decline symptoms and bark beetle attacks in study of P et al. (1996). Several studies have been performed in order to assess the factors affecting the susceptibility of...
Ngày tải lên: 07/08/2014, 03:22