Báo cáo lâm nghiệp: "Survival and acclimatation of Populus nigra to drier conditions after damming of an alpine river, southeast France" ppsx
Báo cáo lâm nghiệp: "Survival and acclimatation of Populus nigra to drier conditions after damming of an alpine river, southeast France" ppsx
... importance of water to a plant lies in its role in cell ex-pansion, cooling of leaves, nutrient and carbon transport and photosynthesis. Poplars are thought to consume large amounts of water to ... growthrange of the black poplar and their acclimatation to soil mois-ture.Fine sanding of the wood cores has also revealed the dis-tribution and dimensions of vessels. The apparent diameter of 50–100 ... B.,Transpiration of trees and forest stands: short and long-term mon-itoring using sapflow methods, Global Change Biol 2 (1996) 265–274.[9] Granier A., Biron P., Lemoine D., Water balance, transpiration...
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Báo cáo lâm nghiệp: "Survival and growth of outplanted seedlings of selected tree species on the High Tatra Mts. windthrow area after the first growing season" pps
... 349–358Table 3. Analysis of variance (F- and P-values) of the effect of planting time and application of the fungal product Ectovit on growth characteristics of seedlings at planting time and after the ... of bareroot and Table 1. Basic characteristics of the bareroot and containerized planting stock of forest tree species planted in autumn 2008 and spring 2009 (with and without application of ... uptake of nutrients and water for rooting and bud-breaking of plants. Ad-vantages of using the containerized type of planting stock are generally known and they were described e.g. in studies of...
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Báo cáo lâm nghiệp: "Survival and growth of Acacia mangium Willd. bare-root seedlings after storage and transfer from aeroponic culture to the field" pdf
... thecollar and the last living bud before transplanting and at 2 and 7 months after planting out.2.3. Statistical analysisA single factor analysis of variance (ANOVA) was performed to determine ... procedure manual, ASEAN-New ZealandAfforestation project, Manila, Philippines, 1987.Figure 1. Acacia mangium shoot growth in cm (means and standard deviations) 2 months after transplanting and between ... out with MINITAB software [9].3. RESULTS3.1. Transplanting stress and survival after plantingTransplanting stress was visible after one week. Some plantsbegan to loose leaves and, under sunlight,...
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Báo cáo lâm nghiệp: "Regeneration and game damage in the Krušné hory Mts. assessed on the basis of National Forest Inventory of the Czech Republic" pps
... nwhere:p – probability of phenomenon (mean value of binomial distribution),ni – number of positive occurrences of the attribute and n is the total number of measurements. Variance is defined by ... peelingPeeling and browsing are defined as the overall damage to the bark and phloem of growing trees caused by red deer feeding; peeling, i.e. the ripping of phloem and bark strips lengthwise, can be ... cm to 11.9 cm and individuals with dbh from 12 cm to 20 cm. Individuals with dbh Table 7. Damage to the particular height classes of total regeneration Height classOpen space Under stand Totally%...
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Báo cáo lâm nghiệp: "Growth and physiological state of beech seedlings grown in a nursery in different light conditions" docx
... processes of the capture and transmission of radiant energy quanta. e long-term eff ect of excessive PAR leads to the photode-struction of assimilatory organs when the bleach-ing of photosynthetic ... shaded and unshaded plastic greenhouse. The objective was to compare seedling growth and the function of assimilatory organs and to determine their reactions after transfer to different light conditions. Seedlings ... di-ameters and higher weight and volume of shoots and root systems. In seedlings grown in the sun a higher number of leaves, larger total leaf area and higher dry matter of leaves per 1 plant were...
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Báo cáo lâm nghiệp: "Structure and development of forest stands on permanent research plots in the Krkonoše Mts" pdf
... point of view the presented re-sults are unique also in pan-European context. e structural dynamics of beech, mixed (fi r beech and spruce beech stands) and spruce stands, relict pine woods and ... ma-tured with abundant natural regeneration of shade tolerant tree species (beech and silver fi r) accompa-nied by more light demanding tree species of diff er-ent age and size. e stand is classifi ... presents growth variables after spontaneous development for the whole stand and beech as dominant tree species. Mixed standsMixed forest stands of beech, fi r and spruce are marked by long developmental...
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Báo cáo lâm nghiệp: "reproductive and morphometric characteristics of wild boar (Sus scrofa) in the Czech republic" pot
... of 200–1,800 m a.s.l., with forest coverage of 60% and an agricul-tural landscape (with an intensive type of agricul-ture) constituting only 10% of the area, similar to the Doupov area and ... time of farrowing and the mor-phometric parameters. is confirms the findings of M and F (2004) that in case there is an abundance of food available during the preceding autumn and ... professional circles. As the main manage-ment suggestion is stopped the increasing of popula-tion density in all study regions, and change the social and age structure on behalf of dominant...
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Báo cáo lâm nghiệp: "Extent and distribution of beech (Fagus sylvatica L.) regeneration by adult trees individually dispersed over a spruce monoculture" ppsx
... beech nut fall and carrying occur to a different extent, the combined ef-fects of barochory and the zoochoric activities of mice and birds, and finally (3) farther into space toward the edge ... variously spatially arranged in them, which come from the preceding genera-tion of spruce stands. e Kremesnik and Telc ar-eas are in the Bohemian-Moravian Uplands (CZ) and the Ansprung area is ... on abandoned areas and on clear-ings caused by natural disasters or clear cutting, or they penetrated into forest stands, most frequently pine stands, and started off a spontaneous change in...
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Báo cáo lâm nghiệp: "Productivity and cost of manual felling with a chainsaw in Caspian forests" pptx
... Productivity and cost of manual felling and cable skidding in central Appalachian hardwood forests. Forest Products Journal, 53: 47–53.ZOBEIRY M., 1994. Forest Inventory (Measurement of Tree and Stand). ... region and will be helpful for the loggers in selecting an appropriate system under certain stand and harvest circumstances.e mean of delay times was 0.8l min per turn, which was 0.22, 0.44 and ... addressed the pro-duction and cost of harvesting Caspian hardwood stands under different machine and harvest pre-scriptions. Many factors can affect the productivity of chainsaws. J (1983)...
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Báo cáo lâm nghiệp: "Arginine and the shade tolerance of white spruce saplings entering winter dormancy" ppsx
... growth, and years later during maturity to flowering and viable seed production. Arginine-derived guanidino compounds as respiratory inhibitor respiratory inhibitors contributed to dormancy and ... acid and guanidino analyses.Organs were homogenized in a Waring blender with 80% ethanol for the extraction of all Sakaguchi and ninhydrin-positive substances. Extracts were filtered and quickly ... changes of free amino acids in buds, shoot apices and leaves, and the metabolism of uniformly labeled 14C--arginine by buds during the onset of dormancy. Canadian Journal of Botany, 46:...
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