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Báo cáo lâm nghiệp: "Interannual variation of soil respiration in a beech forest ecosystem over a six-year study" pps

Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Interannual variation of soil respiration in a beech forest ecosystem over a six-year study" pps

... growing, beech stand, and standbiomass increased by about 10% each year (unpublished data).An increase in soil respiration in a young slash pine plantationhas been ascribed to an increase in ... RESULTS Soil respiration exhibited pronounced seasonal variationswith minimal values in winter and high values in early summerInterannual variation of soil respiration 505and cattle pastures of eastern ... The ability of anempirical model using soil temperature and soil water contentas driving variables to predict both seasonal and interannualchanges in soil respiration was evaluated. Changes in...
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Báo cáo lâm nghiệp: "Genetic variation of Prunus avium in susceptibility to cherry leaf spot (Blumeriella jaapii) in spatially heterogeneous infected seed orchards" docx

... determined using a six-level scale from 0 to 100% (of foliage damaged area), by 20%. Bud burst data was also assessed in March of years 2004 and 2005 at Areas and in 2005 at Sergude,following a ... a repeated measurement analysis of variance usingthe SAS MIXED procedure [28].Clone by site interaction was analyzed combining the leaf spotdata of year 2005 in Sergude with the Areas data ... leaf spot 25Figure 2. Plot of cherry leaf spot disease residuals for year 2005 in Areas after subtracting family effects showing nonrandom spatial variation (a) and modelization of this variation...
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Báo cáo lâm nghiệp: "Radial variation of wood density components and ring width in cork oak trees" pptx

... Summary of the variance analysis for each wood density component and ring width, showing their significance and the percentage of total variation due to each source of variation. Sources of variation ... (on average 0.10 g cm−3, Tab. II) and constant radially.3.5. Analysis of variation of ring and densitycomponentsAn analysis of variance was made on the ring and densitycomponents using ... oak (Quercus suber L.) occupies large areasaround the western Mediterranean basin in Southern Europeand North Africa, over a total area of about 2 million ha,mainly in Portugal (725 000 ha)...
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Báo cáo lâm nghiệp: "Effects of soil mechanical treatments combined with bramble and bracken control on the restoration of degraded understory in an ancient beech forest" pptx

... detect the patterns of variation in species data thatcan be explained by management and soil variables, we calculated a Canonical Correspondence Analysis (CCA) [61] using Canoco 4.5for Windows [62]. ... Statsoft Inc., STATISTICA (data analysis software system), version6, Statsoft Inc., Tulsa, 2001.[59] Stieperaere H., Fransen K., Standaardlijst van de Belgischevaatplanten, met aanduiding van ... ex-plaining 21% of the total variance in the dataset. Soil com-paction also explained a significant amount of variation (14%) in the species composition. Rotary plough and roller explainedeach...
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Báo cáo lâm nghiệp: "Genetic variation of Tunisian Myrtus communis L. (Myrtaceae) populations assessed by isozymes and RAPDs" pptx

... highernumber of analysed individuals per population in allozymedata that allows to an increasing allozyme differentiation [40],(ii) the dominance of RAPD markers, their biallelism and theinterpretation ... disturbedand fragmented as a result of an increasing clearing, over- grazing and overexploitation. Myrtle habitat fragmentation re-duced genetic diversity of the species, increased inbreedinglevelandledtoarapiddifferentiation ... simi-larity matrix calculated from the combination of allele (isozyme) andRAPD band frequencies data. Cluster analysis was carried out usingMulti-Variate Statistical Package MVSP [27].The relationship...
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Báo cáo lâm nghiệp: "Genetic variation of wood density components in a radiata pine progeny test located in the south of Chile" pps

... ear-lywood density followed an oscillating pattern of variation. In their study of families of radiata pine established in several sites in New Zealand, Cown and Ball [8] also measured average ... Vargas-Hernandez [34]observed that area weighted ED and LD increased with cambialage in 60 families of coastal Douglas-fir that were analyzed atage 15. A similar pattern was reported by Wang ... south of ChileFrancisco ZAMUDIO a *, Philippe ROZENBERGb, Ricardo BAETTIG a , Adriana VERGARA a , Marco YAÑEZ a , Carlos GANTZc a Facultad de Ciencias Forestales, Universidad de Talca, PO...
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Báo cáo lâm nghiệp: "Genetic variation of Pinus pinaster Ait. seedlings in susceptibility to the pine weevil Hylobius abietis L." docx

... Galicia. Actually, maritime pineis the most commonly planted species in this region with anannual plantation rate of about 7 000 ha [4]. A breeding pro-gram for maritime pine in Galicia was started ... Curculionidae) on Pinus pinaster Ait. was evaluated in a fertilization× progeny test in Galicia (NW Spain) to determine the genetic variation among families and the possibility to include the resistance ... Particularly, theresin canals appearing in the bark of conifers constitute a phys-ical and chemical barrier to the insect, and the characteristics of those resin canals of Picea spp. have been proved...
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Báo cáo lâm nghiệp: "Allozyme variation of Pinus pallasiana D. Don in Natural Crimean populations and in plantations in technogenously-polluted areas of the Ukraine steppes" ppsx

... 10.1051 /forest: 2004032Original articleAllozyme variation of Pinus pallasiana D. Don in Natural Crimean populations and in plantations in technogenously-polluted areas of the Ukraine steppesIvan ... pineinto three varieties growing in different areas: var. ponticaKoch. in Crimea, var. caramanica Loud. in Anatolia and var.Fenzeii Ant. and Ky on the Taurus range. Dallimore and Jackson[7] had ... et al.continental climate receiving 300–450 mm of mean annualrainfall. In this environment, forestation has always been a dif-ficult and complicated task [2, 21]. In the final decades of the20th...
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Báo cáo lâm nghiệp: "The use of silica sand in micropropagation of woods" pot

... 1999).Paradoxically, in agar media it grows best if there is manifest attenuation and acidification as a result of hydrolysis of the agar. Overall, the degree of hydroly-sis of agar and the characteristics ... 4.5.RESULTSComparing cultures in sand and in agarAfter the completion of cultivation, it was de-termined that when using sand, the starting pH of 5.8 remained essentially unchanged (final pH 5.6). Media ... that after autoclaving agar in flasks was at various degrees of liquidity. is was apparently interrupted by hydrolysis.Methods for propagation were compared statisti-cally and an evidential...
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Báo cáo lâm nghiệp: "Historical development of floodplain forests in the Upper Moravian Vale (Vrapač National Nature Reserve, Czech Republic)" pot

... final cutting of the remaining stands was carried out in at least two Table 5. Reforestation in the Vrapač National Nature Reserve in the period 1877–1893YearReforestation (ha)Filling of ... Republic ABSTRACT: e paper deals with historical development of floodplain forests in the area of Vrapač National Nature Reserve in the floodplain of the Morava River (Protected Landscape Area Litovelské ... demonstrates, as early as in 1872, a substantial proportion of the forests in Table 3. Proportions of age class areas in the Vrapač National Nature Reserve in the period 1852–1980YearAge class areas...
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