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Báo cáo lâm nghiệp: "Assessment of the effects of below-zero temperatures on photosynthesis and chlorophyll a fluorescence in leaf discs of Eucalyptus globulu" pps

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Báo cáo lâm nghiệp: "Improving RBS estimates – effects of the auxiliary variable, stratification of the crown, and deletion of segments on the precision of estimate" pps

... of paths of each tree (eq. [1]) and the true totals and variances of the target variables and the estimates of the totals, respectively.Choice of the auxiliary variable and variance of the ... deletion of larger segmentse stratification of the crown means a formation of at least two strata the size and variability of which are important for the precision of the estimate. e larger the ... effects of the choice of the auxiliary variable, of the deletion of segments, and of the stratification of the tree crown on the sampling error were analyzed. In the analysis, trees of three species...
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Báo cáo lâm nghiệp: "Assessment of the assortment potential of the growing stock – a photogrammetry based approach for an automatized grading of sample trees" potx

... combinations. The merged results of sorting and sizing are hosted in thar-QDB for subsequent monetary eval-uation and optimization (“best alternative”) and can be actual-ized in case of changing ... reasonable application of the approach. Conse-quently, practical application might be limited on demonstra-tion purposes. The approach supports visualization and exem-plary monetary evaluation ... were among other caused by imprecision of measur-ing and re-identification of the “natural pass points” (e.g. basal“area” of the first green branch). For a quantification of the dif-ference “measured...
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Báo cáo lâm nghiệp: "Ground based operation effects on soil disturbance by steel tracked skidder in a steep slope of forest" ppt

... precipitation rates, these machines are likely to remain the most common type of skid-ding machine used. In mountainous and steep areas, the terrain slope is an important factor that a ects operational ... ef-ficiency, costs and erosion. It may also a ect the soil compaction, so in planning forest operations and aligning skid trails the terrain slope may be an im-portant consideration for protecting soil ... soil compaction, rutting and forest floor removal was evaluated on a skid trail in the natural forest of north of Iran. Combination of two levels of slope < 20% (SC1) and > 20% (SC2) and three...
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Báo cáo lâm nghiệp: "Contribution to the knowledge of Clethrionomys glareolus populations in forests of managed landscape in Southern Moravia (Czech Republic)" pot

... a difficult factor to consider in relation to the mammalian population regulation without taking into account its interactions with the behaviour and abundance of the prey popu-lation. As the ... prolonged into the beginning of Novem-ber in our study only in one case in RB locality.e sex ratio was balanced in our case in HL and RB. It is characteristic feature of stable population ... niche vacation (Af densities lowered) was the reason for another high abundance year (gradation phase 2005) (Fig. 1).Comparing the sexual activity in the particular localities it was the highest...
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Báo cáo lâm nghiệp: "Assessment of some forest characteristics employing ikonos satellite data" docx

... (classification without texture utilization) are also summarized in Table 6. e meaning of clas-sification omission and commission in class cembra pine is evident again. KHAT statistics indicate ... with the aid of training sets are a good and acceptable basis for the construction of spectral models for growing stock estimation. In spite of the fact that the standard error of these models ... from the ground survey were also applied for the training polygon creation.e results of classification precision and accuracy evaluated on the basis of ground true data are shown in Table...
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Báo cáo lâm nghiệp: "Contribution to the knowledge of Apodemus sylvaticus populations in forests of the managed landscape of southern Moravia (Czech Republic)" potx

... m2 and the average amount of mast was deter-mined. e plots were selected randomly in the oak stand and the number of acorns was determined on each of the plots. e acorns were then hulled and ... 370–376responded by an increase in relative abundance in the next years 2004 and 2007. e peak of the popu-lation abundance was reached at the HA locality in 2002, which can be explained by the crop ... (8): 370–376 In our case, the sex ratio was markedly in favour of females in HA and HL and balanced in RB. It is a characteristic feature of stable populations living in optimum habitats (N,...
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Báo cáo lâm nghiệp: "Findings from the application of coal combustion by-products (CCB) for forest reclamation on spoil banks of the North Bohemian Brown Coal Basin" pdf

... and total nitrogen, degree of base cation saturation, content of phospho-rus and potassium. On the contrary, cation exchange capacity and magnesium content decreased as a re-sult of CCB application. ... basis of collections and analyses of leaf (needle) samples of different tree species taxa from the assessed state of reclamation A and “B”. e methodical procedure of the analysis of leaf ... reforestation of the state of reclamation A and “B” Fig. 3. Fraxinus excelsior L. in the treatment with the application of CCBFig. 4. Populus tremula L. in the treatment with the application of...
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Báo cáo lâm nghiệp: "SHORT COMMUNICATION The use of cotyledon proteins to assess the genetic diversity in sweet holm oak" potx

... KUBISIAK T.L., 1998. Allozyme and RAPD analysis of the genetic diversity and geographic variation in wild populations of the American chestnut Castanea dentata (Fagaceae). American Journal of ... evaluated. On the other hand, the understanding of the genetic diversity presents in a species and the distribution of this variation among populations is important to set up appropri-ate management ... al. 2005).Holm oak (Quercus ilex L.) is a wide-spread broad-leaved tree species in the Mediterranean basin. In Spain, it occupies 2,039,563 ha and the main stands are found in the south and...
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Báo cáo lâm nghiệp: "Relationships between the parameters of aboveground parts and the parameters of root plates in Norway spruce with respect to soil drainage" docx

... Bratislava, Slovakia2Slovak Organization for Research and Development Activities, Bratislava, SlovakiaABSTRACT: The aboveground parameters and the parameters of root plates in uprooted Norway ... relationships between the aboveground and belowground parameters were analyzed sta-tistically, using linear correlation and regression analysis. STATISTICA 7.0 (StatSoft) was used for data analysis. ...  e regression equations calculated to estimate the values of root plate parameters on the basis of the Table 3. Mean values of aboveground and roots parameters of analyzed Norway spruce trees...
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Báo cáo lâm nghiệp: " Sicily represents the Italian reservoir of chloroplast DNA diversity of Quercus ilex L. (Fagaceae)" pptx

... major haplo-type. Additional haplotypes were rarely detected in continentalItaly and in the islands of Corsica and Sicily, and no Balkanhaplotype was detected along the Italian Adriatic coast. ... by only one individual). Name of locations, geographic co-ordinates, and number of individuals perpopulation are indicated in Table I. In addition, one Q. ilex populationfrom the island of ... Distribution and frequency of cpDNA haplotypes within Q. ilex populations and phylogenetic reconstruction of the relationshipsamong haplotypes using statistical parsimony. Size of the pies indicates the...
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