Báo cáo lâm nghiệp: "Transformation of solar radiation in Norway spruce stands into produced biomass – the effect of stand density" doc
Báo cáo lâm nghiệp: "Transformation of solar radiation in Norway spruce stands into produced biomass – the effect of stand density" doc
... years after the thinning similarly like in previous years. Positive ef-fects of the high-type thinning in 2001 were reflected in the 17%increase of LAI in 2002. e realized thin-ning exhibited ... aboveground biomass (TBa) and the total aboveground biomass increment (DTBa) were ob-tained on the basis of stand inventory realized at the end of each growing season. e procedure of the stand inventory ... because the considerable amount of absorbed PAR is not directly involved in solar energy transformation into the formation of new biomass. The increased amount of foliage is not involved in effective...
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Báo cáo lâm nghiệp: "Preliminary study on phloemogenesis in Norway spruce: influence of age and selected environmental factors" ppsx
... stated that the number of cells in the cambial zone doubled at the very beginning of the vegetation period, which was considered the begin-ning of cambial activity. e trees in the Czech Re-public ... stands in the process of the transforma-tion of spruce monocultures. Journal of Forest Science, 32: 21 5–2 23.M L. (1970): Locating the initial in the vascular cambium of Pinus strobus ... longer in old trees, there were no large differences in the numbers of formed cells. The beginning of the longitudinal axial parenchyma formation was determined in young trees on May 14. In old...
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Báo cáo lâm nghiệp: "Extended length rotation to integrate timber and pine nut production with the conservation of structural diversity in a Pinus pinea (L.) forest" pdf
... the height of the tree at the end (H2) and at the be-ginning (H1) of the five year period, as well as the differencebetween the age at the end of the period (T2) and the age at the beginning ... the dominant strata and the site index within the for-est area can be seen in Figure 4. The classification of the forestarea in function of the stand age and the site index is shown in Table ... that the risk of stem rotby Phelllinus pini in Pinus pinea is related to the age of the stand, the height and the basal area (R2= 0.6681), carryingout a discriminant analysis to classify the...
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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
... 1 – – ; v3; v4 2 – – – – – – – – (6)n – n0 + (n0 + 1) × F α 1 – – ; v3; v4 2are the quantiles of Fisher-Snedocorov F-distribu-tion, α is probability, v1 = 2 (n – ... lower and upper limit of the interval of reliability reached with a certain probability 1 – α. Lower limit n0 – – – – – – – – – (5) n0 + (n – n1 + 1) × F α – –; v1; v2 2Upper ... Mill., Alintus altissima (Miller) Swingle, otherslower limit Sx – – tα;n–1 × – – – – (9) √ n – 1upper limit Sx – + tα;n–1 × – – – – (10) √ n – 1where:tα;n–1 – quantile of Student’s...
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Báo cáo lâm nghiệp: "High potential for increase in CO2 flux from forest soil surface due to global warming in cooler areas of Japan" ppt
... although the soil carbon in the deeper layer may be in uenced by global warming in the longterm. Because the type of vegetation on the site has changedover a long time, the carbon source and the ... characteristics in the deeper layer might differ from those in the surface layer.This discrepancy may make it difficult to estimate the in u-ence of the global warming on the decomposition of the soilcarbon ... warming would varywith respected to the amount of easily decomposable organiccarbon in the soil. The period of increasing CO2flux will besomewhat longer in the cooler-climate areas than in...
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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
... 09◦00’ W 08◦52’ WAltitude (m) 20 0–3 00 20 0–4 00 0–1 00 0–1 00Mean annual rainfall (mm) 70 0–8 00 70 0–1 000 50 0–6 00 50 0–8 00Mean temperature (◦C) 12. 5–1 5 1 5–1 6 1 5–1 6 1 5–1 7Soil type Eutric litosoils ... y−1).Within the site, the trees also showed differences in growth,especially in diameter, with coefficients of variation of the mean around 20% (Tab. II). The extent and the pattern of the within-tree ... account the presence of heartwood in the trees and the factors of its variation.Acknowledgements: We thank StoraEnso for allowing the sam-pling, Jorge Gominho for advice in heartwood determinations,...
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Báo cáo lâm nghiệp: "Shoot development and dieback in progenies of Nothofagus obliqua" pptx
... potentialities in terms of the size of the shoot they would eventually develop[1]. In the case of Nothofagus species, such potentialities varyfollowing a distal-to-proximal decreasing trend in the numberShoot ... dieback.Sinceno pruning was applied to the plants, the dead segment of each GUwas standing at the time of measurement (Fig. 1). For each GU of each plant we registered the presence of a terminal ... synthetically as apex death involves two components: the abscission of the terminal bud and the desiccation of dis-tal nodes and internodes (dieback). The natural abscission of ashoot’s terminal...
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Báo cáo lâm nghiệp: "Sucrose synthase expression pattern in the rhythmically growing shoot of common oak (Quercus robur L.)" pot
... incorporation of cDMO as a indicator of organ sink strength in oak, that on the 2nd day, the apex is astronger sink than the other organs [4]. We also localized the SuSy protein in storage tissues of the bud, ... preferen-tially in the vascular tissues of the phloem and in particular in phloem companion cells of the underlying internodes. Suchlocalization is in agreement with the results of Kleines et al.[13], ... immunolocalize the SuSy protein in oak revealed a positive signal in the reserve parenchyma tissues of the apex and in the leaf vascular tissues and underlyinginternodes. The study of SuSy activity...
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Báo cáo lâm nghiệp: "Morphological and functional variability in the root system of Quercus ilex L. subject to confinement: consequences for afforestation" ppt
... encourageair pruning of roots. Continual air pruning induces a limita-tion to the main root growth by shortening its length to the depth of the container and preventing the development of re-placement ... estimating the following param-eters using the software WhinRhizov.4.1: number of exterior rootlinks (or magnitude, µ); number of root links in the longest uniquepath from the base link ... exploring and exploiting soil re-sources [7]. On the other hand, the impossibility of differenti-ating between root systems produced by different containers,according to the topological models of...
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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
... and incompatibleparents for a given offspring. In this case, the selfing rate wasobtained computing the percentage of established offspring withgenotypes that can be generated by selfing of the ... mating system of maritime pine (Pinus pinasterAiton) in central Spain, Invest. Agr.: Sist. Rec. For. 11 (2002)19 3–2 04.[30] Mitton J.B., Latta R.G., Rehfeldt G.E., The pattern of inbreeding in Washoe ... rate of this species after a firstgrowing season in the nursery was the same independently of the inbreeding level. The level of relatedness found within the stand due to first-order relationships...
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