Báo cáo lâm nghiệp: "Morphological and functional variability in the root system of Quercus ilex L subject to confinement: consequences for afforestation" ppt
Báo cáo lâm nghiệp: "Morphological and functional variability in the root system of Quercus ilex L. subject to confinement: consequences for afforestation" ppt
... a); and sum of links in all possible unique paths from the base link to all exteriorlinks (or total exterior path length, pe). The following topological Root system morphological and functional ... container seedlings are used for planting, the con-tainer characteristics affect the plantlet root system. For ex-ample, ribs or slits on the cell inner walls prevent root spi-ralling, and holes ... and preventing the development of re-placement taproots. The confining of lateral roots in the con-tainer and their downward growth lead to the generation of anorthogeotropic lateral root system...
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Báo cáo lâm nghiệp: "Fingerprinting and genetic variability in cork oak (Quercus suber L.) elite trees using ISSR and SSR markers" ppsx
... that the high level of pollen flow could in uence variability withinpopulations and contribute to decrease the inter-population variability. There are others factors that could affect the high levels of ... et al. [6])was calculated. This is the probability that an individual will be in- formative of the respect to the segregation of its inherited alleles. In addition, the expected probability of ... among stands and the small size of stands. Others factors that could affect this result, such as introgression between Q. suber L. and Q. ilex L. , are also commented. The high level of genetic variability...
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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
... aucuparia L. ) is classified into the group of other deciduous tree species according to the methodology of forest inventoryTable 5. Total damage to individuals in regeneration by gameSpeciesTotally ... negundo L. , othersAsh Fraxinus excelsior L. , Fraxinus angustifolia Vahl., Fraxinus americana L. Elm Ulmus minor Mill., Ulmus glabra Hudson, Ulmus laevis PallasLocust Robinia pseudoacacia L. Birch ... simply said that where the possibilities of National Forest Inventory for the evaluation end, there comes the Inventory of Game Damage in the Smaller Territo-rial Units.CONCLUSIONResults...
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Báo cáo lâm nghiệp: "arbon and nutrient stocks in mature Quercus robur L. stands in NW Spai" docx
... (treebiomass, litter layer and total mineral soil). The high number of larger trees in stand 1 led to a substantial increase in the Cstock in the system. The average C accumulation in above-ground ... diameter classes for the four Quercus robur stands studied.height (d) was the only independent variable included in the allometric model. Addition of stand variables to take into ac-count the differences ... in stand structure and density did not lead to substantial decreases in the standard errors of estimates, in- dicating a good performance of the general equations for all the sample stands. These...
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Báo cáo lâm nghiệp: "Heat and drought 2003 in Europe: a climate synthesis" ppt
... Scots pine forest (Pinus sylvestris L. ) in the south-ern upper Rhine plain, Meteorol. Z. 14 (2005) 143–150.[36] Wilson J., Vulnerability to wind damage in managed landscapes of the coastal Pacific ... tree-ring parameters indicating differences in drought stress of Pinus sylvestris forests within the Erico-Pinion in the Valais(Switzerland), Plant Ecol. 163 (2002) 105–121.[30] Rouault G., Candeau ... complement to previous studies, we assess the intensity of the 2003 heat and drought in view of their consequences for forest ecosystems, using several climate parameters, and we compare them to...
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Báo cáo lâm nghiệp: "Heartwood and sapwood variation in Eucalyptus globulus Labill. trees at the end of rotation for pulpwood production" potx
... site) will increaseheartwood. The silvicultural management of E. globulus plan-tations used for pulping should take into account the presence of heartwood in the trees and the factors of its ... corresponding to the different height levels, using formulas for a cylinder for section 0%–5%, truncated cone for all intermediate sec-tions (5%–15% to 65%–90%) and a cone for the tree top (90%–top). The ... highlysignificant (P < 0.001) in all sites. For the total variation treesaccounted for 26% to 59%, height level for 16% to 31% and the interaction between trees and height level for 24% to...
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Báo cáo lâm nghiệp:"Selfing and sibship structure in a two-cohort stand of maritime pine (Pinus pinaster Ait.) using nuclear SSR markers Santiago C. González-Martíneza,b, Sophie Gerberc, María-Teresa Cerverad, José-Miguel Martínez-Zapaterd, Ricardo " ppsx
... using likelihood ratios (LOD-scores). To classify pairs of individuals by relatedness (full-sibs, half-sibs and unrelated), LOD-scores were calculated following the formulas of Brenner [8]. For each ... Needle samples from all maturemaritime pine trees within a circular plot of 50 m in radius (n = 76), and all seedlings and saplings taller than 20 cm within a centralsubplot of 25 m were collected ... probability at a locus i.2.3.2. Selfing within the standSeedlings and samplings collected in the plot were used to estimate the selfing rate based on dispersed progeny, that is, the number of selfs...
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Báo cáo lâm nghiệp: "Sucrose synthase expression pattern in the rhythmically growing shoot of common oak (Quercus robur L.)" pot
... underlying internodes In contrast to the apices, in young and mature leaves as wellas in the underlying internodes, SuSy accumulated preferen-tially in the vascular tissues of the phloem and in ... alsolocalized specifically in the companion cells in maize leaves[17] and in castor bean [27]. This localization in common oakleads also to suggest an involvement of SuSy in controllingsugar fluxes ... sucrose loading in the phloem, thus contributing to the export of sucrose towards the young expanding leaves of the second flush. This hypothesisis reinforced by results obtained in young leaves. Indeed,...
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Báo cáo lâm nghiệp:" Mid-winter ultrastructural changes in the vegetative embryonic shoot of Norway spruce [Picea abies (L.) Karst.]" pdf
... result of the PAS reac-tion, not only starch grains, but also cellulose cell walls and tanninvacuoles in pith cells were stained. (2) 3% glutaraldehyde and 2% paraformaldehyde with CaCl2 in 0.1 ... Apical initials [Fig. 1(2)]Outer tangential walls of apical cells were thicker than anti-clinal walls and inner tangential walls. The surface of outertangential walls was covered with a thin, ... particularly at the basal part of needle primordia, and in the young pith. Starch was also present in procambial cells and in whole apical meristem, especially in the rib meristem.Starch grains...
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Báo cáo lâm nghiệp: "Predicting solar radiation transmittance in the understory of even-aged coniferous stands in temperate forests" ppt
... assesmentResults of applying model 3S are presented in Table II and Figure 4c. The model was applied on all data, and for the standwith missing information on thinning b*thinning was consideredequal to ... pine in the tem-perate climate zone. For a better prediction, stand age, and alsothinning intensity and time since last thinning can be added to the model. Thus the model explicitly allows to ... characteristics, the time since last thin-ning τ and the thinning intensity I were retained for this study. Thin-ning intensity I is defined in terms of basal area, being equal to the ratio of absolute...
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