Báo cáo lâm nghiệp: "Spatially constrained harvest scheduling for strip allocation under Moore and Neumann neighbourhood adjacency" pdf
Báo cáo lâm nghiệp: "Spatially constrained harvest scheduling for strip allocation under Moore and Neumann neighbourhood adjacency" pdf
... 70 J. FOR. SCI., 57, 2011 (2): 70–77 JOURNAL OF FOREST SCIENCE, 57, 2011 (2): 70–77 Spatially constrained harvest scheduling for strip allocation under Moore and Neumann neighbourhood ... t. In the case of strip window management, each forest stand was divided into strips following com- mon shelterwood management conventions for strip width and forest stand borde...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: " Flight activity of Anthribus nebulosus Forster, 1770 (Coleoptera: Anthribidae) and notes to its life history" potx
... well as in mixed forests, in lowland forests and even on forest-steppe habitats. Larvae occur mainly on Picea sp., Pinus sp. and Abies sp.; adults occur on the same tree species and also on Larix ... Flight activity of Anthribus nebulosus Forster, 1770 (Coleoptera: Anthribidae) and notes to its life history J. H 1,2 , M. T 3 1 Forestry and Game Management Research Inst...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Study of natural hybridization between Alnus incana (L.) Moench. and Alnus glutinosa (L.) Gaertn" pptx
... along the roads, moist sites at the foot of upland, grassy bogs, felled and burnt areas, abandoned meadows and plough-lands. Area: North, Middle and Southeast Europe, boun- dary of West Asia: ... 151–248. HYLANDER N., 1957. Leaved and small-leaved forms of Alnus glutinosa and A. incana. Svensk botanisk tidskrift, 51: 437–453. YURKEVICH I.D., GHELTMAN V.S., PARFENOV V.I., 1963....
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its effects on cambioxylophagous fauna" docx
... stands. Its proportion (13.2%) in forest stands of the eastern Krušné hory Mts. accounts for an area of 8,400 ha (B et al. 2008). At present, thinning and re- constructions of these stands ... these stands are demanding both economically and tech- nologically. Manual tree felling or energy-demand- ing chipping by harvesters are the most commonly applied techniques. Where stand...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: " Long-term effects of CO2 enrichment on bud phenology and shoot growth patterns of Norway spruce juvenile tree" potx
... RESULTS AND DISCUSSION At the end of growing season 2002, the mean tree height and stem diameter (at one tenth of tree height above the ground) were 3.5 m and 5.7 cm and 3.3 m and 5.6 cm in A and ... through the bud scales, and 4 – leaf per needle elon- gation). Shoot elongation growth was observed on exposed and shaded apical (ExA and ShA) and exposed and shaded l...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Research on individual parameters for cutting power of woodcutting process by circular saws" docx
... their performance, thickness and width of a layer which is cut, cutting angle, speed of cutting move- ment and feed, cutting forces and friction forces, performance of motors, etc.) and a cutting ... the deformation of a mass in the surroundings of a cutting edge, – forces necessary for deflection of chips and sup - pression of chip friction against the leading edge of the toot...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "derivation of target stocking for forests of norway spruce vegetation zone in slovaki" pptx
... 354 J. FOR. SCI., 53, 2007 (8): 352–358 F – markedly changed forest (forests with anthropic signs only but of natural appearance), G – completely changed forest (forest stand with anthropic ... stages, altitude and GFT. Average stocking on PRP (Fig. 1) established in primeval forests reached the value 0.61, in natural and semi-natural forests 0.62 and in artificial forests 0.76. e...
Ngày tải lên: 07/08/2014, 03:22
![Báo cáo lâm nghiệp: "Variability of spruce (Picea abies [L.] Karst.) compression strength with present reaction wood" pdf](https://media.store123doc.com/images/document/2014_08/07/medium_vvk1407360003.jpg)
Báo cáo lâm nghiệp: "Variability of spruce (Picea abies [L.] Karst.) compression strength with present reaction wood" pdf
... P and K (1961), also for spruce. As far as the stem height is concerned, the decreas- ing trend was confirmed for the CW, OW and SWL zones. An inverted trend was found only for the ... e tree was selected in the Křtiny Training Forest Enterprise Masaryk Forest – Men- del University of Agriculture and Forestry in Brno, Habrůvka Forest District, area 164 C 11. e...
Ngày tải lên: 07/08/2014, 04:20
Báo cáo lâm nghiệp: "Verification of the food supply to game under conditions of the floodplain forest ecosystem" docx
... OŽP-Sf). Out of the area, forests represent 80.20%, meadows 8.52%, grassland 3.82%, arable land 0.25%, water bodies 4.50%, and other lands 2.71%. Only forest, meadow and grassland areas fenced in ... the forest manage- ment plan for the Židlochovice Forest Enterprise for the period 1. 1. 2000–31. 12. 2009, and from the data provided by Židlochovice FE and Lanžhot For- est D...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Evaluation of three methods for estimating the Weibull distribution parameters of Chinese pine (Pinus tabulaeformis)" pps
... and MOM, therefore it is worth introducing the LSM for fitting the Weibull distribution and compar- ing their performances with the MLE and MOM. The objective of this research is to assess and ... value for smaller i and a smaller value for larger i. us, Equation (13) is a linear equation and is expressed as Y = cX + λ (15) Computing c and λ by simple linear regressio...
Ngày tải lên: 07/08/2014, 10:22