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
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
... correlation between the aboveground parameters and the depth of root plates in spruce trees growing both in waterlogged and in well-drained sites. According to our results, it seems that the roots of ... 353JOURNAL OF FOREST SCIENCE, 56, 2010 (8): 353–360Relationships between the parameters of aboveground parts and the parameters of root plates in Norway spruce with respect to soil drainageP. ... e-mail: stofko@neulogy.euness of root plates in Norway spruce trees, and it is probable that there does not exist any relationship between the aboveground parts and the rooting depth in adult spruce...
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Báo cáo lâm nghiệp: "Relationships between hydraulic traits and habitat preference for six Acer species occurring in the French Alps" pptx
... [18–20] in particular since these speciesacclimate to limited water availability by increasing theirresistance to cavitation [13], one of the major causes of decline in the botanical species in the ... conditions.Vegetation, soil and climate have been described in detail by Man-neville [16]. In this area, the coarse texture (limestone bedrock out-crops) explains the dryness of the soil and in summer, with the ... differences in this trait in maple. In the case of maples, the various species distinguish themselves according to their hydraulic properties, the fruit of an ancestral evolution in biotope preference,...
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Báo cáo lâm nghiệp: "Relationships between the intra-ring wood density assessed by X-ray densitometry and optical anatomical measurements in conifers. Consequences for the cell wall apparent density determination" pps
... of the image, rather than on the completeimage of the ring at one time, since the grey levels of the lumens in the earlywood have a tendency to be brighter than in the latewood, in view of the ... determination of the cell wall proportion(Fig. 6). The effects of the treatments of the wood sample(embedding, slicing, drying…) and of the image of the rings(acquisition procedure, thresholding…) ... straightness of the ring limits. The selected widths were3000 µm for Finland spruce, France spruce and France fir; 1500 µmfor France pine and South Finland pine and 1000 µm for North Finlandpine....
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Báo cáo lâm nghiệp: " Relationships between browsing damage and woody species dominance" doc
... percentage of mortality. On the other hand, in areas with lower yet evident load, both the rate of damage to the particular species and their mortality often fundamentally differ – with respect to the ... relationship is rather of polynomial than linear char-acter. With respect to the character of both param-eters it is evident that with increasing dominance the effect of a species on the total damage ... species in the transect as well as the proportion of these parameters significantly correlate with the dominance of the given species being suitable parameters for the analysis of a relationship between...
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Báo cáo lâm nghiệp: "Relationships between site and stock quality in Pinus halepensis Mill. reforestation on semiarid landscapes in eastern Spain" ppsx
... meansthat larger seedlings survived better in some of the worst(lower survival) sites. In the sandy and warmest site of Tous and in the site of Chiva (mostly clayey soil with an intermedi-ate temperature ... At the conclusion of the test, the seedlings were carefully removed and their root growth determinedby considering the white roots that grew outside the plug in the per-lite medium. Then, the ... during the two years for the main effects of both site and stocklot factors, either in survivalsite and stock quality in Aleppo pine 725Figure 1. Field survival in five commercial stocklots of...
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Báo cáo lâm nghiệp:"Relationships between soil factors, Quercus robur health, Collybia fusipes root infection and Phytophthora presence" doc
... moderatelydeclining and the length of mother roots per volume of soil (t value of 0.77 and probability of 0.447), the number of fineroots per length of mother roots (t value of –1.35 and probabil-ity of ... severity of waterlogging and of C. fusipes infection.Indeed, when all soil characteristics and root infection indexwere entered together in the model, only the root infectionindex remained significantly ... from the others. Thereafter, independentfactors were all introduced together in the model to study the coline-arity between the different factors. The relationship between frequency of Phytophthora...
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Báo cáo lâm nghiệp: "Relationships between stem size and branch basal diameter variability in Norway spruce (Picea abies (L.) Karsten) from two regions of France" doc
... differences between the thickest branch and thinnest one increases as and when the tree grows. • With tree ageing, living whorls also contained dead thin branchescontributing to the inflation of the within-whorl ... achieved theirmaximal diameter and are now turning into declining branches.This zone constitutes in most cases the asymptote of the dia-meter profile (Fig. 4). In the evaluation sample, linear within-tree ... Colin [6] and Daquitaine [8]: to fit the model to Lorraine trees and to try to predict branch diameter of the Midi-Pyrénées sample. In our case we changed the range of stem height, DBH and stand...
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Báo cáo lâm nghiệp: "Solar activity, global surface air temperature anomaly and pacific decadal oscillation recorded in urban tree rings" pot
... becoming increasingly important [8,9,31,55,65]. In China,tree ring chronologies studies started in the 1930s [34, 64].Since then, research using tree rings has been conducted to understand the ... response to solar activity in the periodic bands of 5–8, 10–12 and 20–30 years. The wave signal of tree growth was also affected and amplified by the combined effect of the PDO from 1900 to 2004 and ... response to PDO in the growing season (May–October) (Tab. IV). Treering width in Chinese pine shows more significant response to the PDO in warm periods than to the cold periods (Fig. 7B);suggesting...
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Báo cáo lâm nghiệp: "Links between tree structure and functional leaf traits in the tropical forest tree Dicorynia guianensis Amshoff (Caesalpiniaceae)" ppsx
... carried out in the morning between 07 00 and 12 00 h in the forest understorey and between 07 00 and 10 00 h in the clearing to avoid a mid-day stomatal closure. During the A-PPFDresponses, the mean ... is the result of the negative and positive scaling of LMA with Nm with respect to the irradiance and tree ASD, respectively. This sug-gests that the mechanisms underlying the relationship of ... dimensions The number of nodes and the internode length per GUincreased significantly in understorey and clearing trees, untila threshold value corresponding to the onset of branching (i.e.ASD 3). The...
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Báo cáo lâm nghiệp: "Relationship between root growth potential and field performance in Aleppo pine" doc
... under-lines the need to perform the test as closely as possible to the planting date [24]. The value of the RGP as an indicator of plant vigour is probably its main strength [30]. In the presentstudy, ... test conditions and stocklot on RGP; (ii) the in u-ence of other seedling quality attributes on the expression of the RGP; and (iii) to examine the relationship between RGP and field performance ... F-values and significance of analysis of variance and RGP values for each test according to the stocklot factor (CA, CL, FA, GE,HT and HU). Mean values and standard error. In the same column, stocklots...
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