Báo cáo lâm nghiệp:" How to relate the standing tree shape to internal wood characteristics: Proposal of an experimental method applied to poplar trees" pptx
Báo cáo lâm nghiệp:" How to relate the standing tree shape to internal wood characteristics: Proposal of an experimental method applied to poplar trees" pptx
... analysis for tree FV1:(A) skeleton of the standing tree; (B) reconstruction of the tree shape and of the sampled discs; (C) discmeasurements of tension wood; loca-tion of the pith (M), the disc ... occurrence of compres-sion wood. The objective of this paper is to present the method devel-oped in our laboratory to measure the geometry of a standing mature tree and to relate it to the occurrence ... is the meas-urement of the targets on the standing tree. An experiment wascarried out to quantify the precision of an operator when tar-gets were measured by means of the tacheometer. The...
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Báo cáo lâm nghiệp: "How to identify larvae of the protected species: Dioszeghyana schmidtii (Diószeghy 1935), and survey its presence and abundance (Lepidoptera: Noctuidae; Hadeninae)" pot
... larval stage, together with the ad-vantages of such.MATERIAL AND METHODS To obtain D. schmidtii larvae it is recommended to simply beat the bottom branches of the food-plant up to 3 m above ... possibilities.(C) Degree of isolation of the population present on the site in relation to the natural range of the species.(D) Global assessment of the value of the site for conservation of the species ... other similar pattern, the pinacula at the base of the setae are small and often bright. e body may have dark spots and other patterns; these are not pinacula at the base of the setae, however....
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Báo cáo lâm nghiệp: "How the absolute growth rate of poplar adapts to the light-NO -dosage 3 G.A. Pieter" pot
... (RGR) and the age of the organ; and 2) are independent of irradi-ance. Consequently, the absolute growthrate of such a branch cannot adapt to irra-diance via these ... correspondence be-tween the development of the vascularsystem of poplar, the growth of the organsand the development of absolute growthrate of the plant. Adaptation proceeds ... growthrate of a branch adapts in a way similar to that of nitrate dosage. As the availability of (reduced) nitrate in the plant becomeslimiting, the expansion of the vascular...
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Báo cáo lâm nghiệp: "Timber harvesting in the ukrainian carpathians: Ecological problems and methods to solve them" ppsx
... the construction and maintenance of forest roads constitute there nearly one third of the total cost of harvested timber.In the Carpathian region of Ukraine, the network of forest roads is ... lower than in the countries of West and Central Europe. Forest areas with the density of roads more than 10 mha–1 constitute less than 2% of the total forest area. More than 40% of forest ... density of soil in the rut and its depth, which depend on the number of passages in the same track. Investigations included measuring the depth of ruts, degree of damage to the bearing surface and...
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Báo cáo lâm nghiệp: "Ecological conditions influencing the localization of egg-laying by females of the cockchafer (Melolontha hippocastani F.)" pps
... between the extent of the damage and the individual characteristics of the experimental plots. e relation between the extent of the damage and the method of estab-lishment of the stands and degree ... over to the open space from the neighbouring stands.e correlation between the extent of the dam-age and method of plantation establishment and degree of weed infestation at the time of swarming ... 4).Broadleaved trees in the neighbourhood of the sample plots were sources of maturation feeding of the beetles and a place where they gathered. It is a factor, which contributes to the selection of plac-es...
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Báo cáo lâm nghiệp: "A pheasantry as the habitat of small terrestrial mammals (Rodentia, Insectivora) in southern Moravia (Czech Republic)" doc
... 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, ... concentration of pheasants, feed-ing supply – form of feed) on the diversity of the community of small terrestrial mammals and on the abundance and viability of their populations. Area of studyTwo ... concentration of pheasants and high amount of supplementary food in the form of feeding for pheasants. Moreover, in the region of southern Moravia, pheasantries represent isolated areas of woody vegetation...
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Báo cáo lâm nghiệp: "Available nitrogen in the surface mineral layer of Serbian forest soils" docx
... content of their avail-able forms in the soil. Knowing the dosage of fertil-izer applied to the soil and the amount of marked nutrient absorbed by plants, one can determine the value of available ... ect the level of experimental crop yield. Be-sides, neither the content of easily available mineral forms of N nor the total quantities of the N fraction derived from the soil in the crop and ... which shows that the percentage of fertilizer nitrogen utilization varies between 30.6% and 39.4%. On the other hand, the experimental Table 2. Parameters of plant yield and N content in the experimental...
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Báo cáo lâm nghiệp: "How does legacy of agriculture play role in formation of afforested soil properties" ppsx
... values of both topsoil and underlying horizon nearly equal (69% and 72%, respectively). On the other hand, the difference be-tween topsoil layer and deeper one seems to be obvi-ous either in ... farmland. Plant and Soil, 168/169: 103–110.AUGUSTO L., RANGER J., BINKLEY D., ROTHE A., 2002. Impact of several common tree species of European tem-perate forests on soil fertility. Annals of Forest ... spe-cies on the chemistry of mineral topsoil in forest plantations Fig. 2. Mean values of base cation saturation according to land-use history analyzed in both topsoil (A) and subsoil (B) horizons....
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Báo cáo lâm nghiệp: "How do lepidopteran seasonal guilds differ on some oaks (Quercus spp.) – A case study" pdf
... comments and improved the quality of the manuscript. anks also to Dr. S K, who gave us valuable comments and recommenda-tions on early versions of the manuscript and to A F and ... foliage (usually the end of May up to the end of June and the beginning of July); summer feeders (SF) – feed-ing on mature leaves at the beginning of July to the beginning of August; and autumn ... preferences of the most abun-dant defoliators: Lymantria dispar, Operophtera brumata, Erannis defoliaria, Tortrix viridana, Aleim- ma loeflingiana, Archips xylosteana and several others. e...
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Báo cáo lâm nghiệp: "New insights in the recognition of the European ash species Fraxinus excelsior L. and Fraxinus angustifolia Vahl as useful tools for forest management" pdf
... in the brackets represent the phenotype presence(1)/absence (0) of FaL757, and the second number that of F19Lg). The percentages of the total inertia provided by the first two dimensions areshown ... werenot included in the analysis of variance). When analysing balanceddata, this procedure allows determination of the amount of total vari-ation explained by each level (factor) on the observed data ... without anytreatment at all, and second to be able to provide a straight-forward means for managers to rapidly detect the presence of F. angustifolia seeds. But it is sometimes difficult to detect...
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