Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc
Báo cáo lâm nghiệp: " Humus conditions and stand characteristics of artificially established young stands in the process of the transformation of spruce monocultures" pdf
... moder in the unmixed spruce stand and mixed stands, mull-moder in the unmixed beech stand (according to N et al. 2001). The high accumulation of humus in H horizon in the mixed stand of ... floor occurs in the stand of larch with beech (52.6 t/ha) and the statistically lowest one in the unmixed beech stand (22.0 t/ha). e mixed stand of spruce with beech and the spruce stand repre-sent ... in all stands was noted. Statistically significant differences were not detected in the content of DOC in forest floor and soil between spruce and beech stands and mixed stands under given conditions...
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Báo cáo lâm nghiệp: "Species composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warming" doc
... conditions.SHORT COMMUNICATIONSpecies composition in low mountain beech (Fagus sylvatica L.) stands in the Bieszczady National Park under the global warmingD. S1, R. J1, G. R1, ... in the fir volume and the increase in beech volume was collected.– However, the increasing share of beech, accompa-nied by a decrease in the share of fir, is typical of the natural seedlings’ ... structure in low mountain zone beech forests in the Bieszczady Mountains according to the number of trees (for years: 1993–2003) and compared with dry trees, loss ones and ingrowth treesOthers(Trees/ha)–...
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Báo cáo lâm nghiệp: "Current possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Krušné hory Mts" doc
... possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Krušné hory Mts.P. K, O. MFaculty of Forestry and ... parts of the stands) than in the Krušné hory Mts. (with underplanting realized inside the stands) was also a reason for the relative failure of underplanting in the existing spruce stands in the ... Results show that the growth of Norway spruce in the Krušné hory Mts. on these groups of forest types is identical to that on GFT 7K in the Krušné hory Mts. or on GFT 6K in the Bohemian-Mora-vian...
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Báo cáo lâm nghiệp: "Growth and physiological state of beech seedlings grown in a nursery in different light conditions" docx
... to a gap was still lower after 30 days than in the leaves of plants left in the shade and in control seedlings growing in the gap.Photoinhibition in beech seedlings grown in the shade and ... weight and volume of shoots and root systems than seedlings grown in the shade. A higher number of leaves, larger total leaf area and higher dry matter of leaves per 1 plant were de-termined in seedlings ... erent light conditions after outplanting. Many data are available on reactions of seedlings grow-ing in the shade to a sudden increase in light access. Some characteristics change very rapidly,...
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Báo cáo lâm nghiệp: "Effects of microsite variation on growth and adaptive traits in a beech provenance trial." pps
... environmental indicators. e aim of this study was to clarify to what extent the spatial variation of environment a ects growth and adaptive traits in a provenance trial, and whether blocking can ... genetic variation within populations and/ or environmental variation on very small scales.Analysis of covariance confi rmed the expected signifi cant provenance eff ect on all traits (Table2). ... subdivi-sion is achieving homogeneous environmental conditions within blocks so that blocking can re-move the within-trial environmental variation by using blocks as a source of variation in an analysis...
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Báo cáo lâm nghiệp: "rowth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts" docx
... granite.Supported by the Ministry of Agriculture of the Czech Republic, Project No. MZe 0002070201.Growth and health state of silver fir (Abies alba Mill.) in the ridge area of the Jizerské hory Mts.V. ... dynamics of the height growth of the silver fir experimental plantings was evaluated on the basis of the results of the measurements of all trees liv-ing in 2007, and of the highest trees in 2007 ... K).CONCLUSIONSBased on the results of the investigations into the development of the silver fir plantations and the dy-namics, of some climatic factors, these conclusions are drawn: In the model area of the Middle...
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Báo cáo lâm nghiệp: "Effects of drought and heat on forest insect populations in relation to the 2003 drought in Western Europe" ppt
... insect populations in the context of this exceptional event. Observations of changes in population levels of the main European forest insect pests during and after the drought arepresented and ... prolonged drought on bark beetles The success of the establishment of bark beetle populations on their host tree depends, on the level of the insect popu-lations and the ability of pioneer individuals ... levels the previousyears), and host type (in relation to its tolerance to stress).2. DIRECT EFFECTS OF DROUGHT AND HEAT ON INSECT PERFORMANCES Insect populations can often respond rapidly and...
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Báo cáo lâm nghiệp: "Growth versus storage: responses of Mediterranean oak seedlings to changes in nutrient and water availabilities." ppsx
... 10.1051/forest:2006104Original articleGrowth versus storage: responses of Mediterranean oak seedlings to changes in nutrient and water availabilitiesVirginia S P´a*, Pilar C D´a, Fernando ... was to assess the combinedresponse of growth, carbohydrate and nitrogen reserves of seedlings of three Mediterranean oaks (Quercus coccifera,Q. ilex subsp. ballota and Q. faginea) to changes in ... (Tab. I, Fig. 7). Therefore, trajectories of N were4–1 in Q. coccifera and 1 in the remaining species (Fig. 3).3.2. Effects of wateringThe response of DM to watering differed across species(Tab....
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Báo cáo lâm nghiệp: "Growth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation" docx
... 10.1051/forest:2007005Original articleGrowth, allocation and leaf gas exchanges of hybrid poplar plants in their establishment phase on previously forested sites: effect of different vegetation management ... biomass allocation and leaf carbon assimilation was investigated in two plantations(1- and 2-year-old) established in previously forested sites of south-eastern Québec. Any vegetation control ... 2006)Abstract – The effect of different vegetation control methods (mowing and cultivation between plantation rows, herbicide application and cover plantsowing) on hybrid poplar (P. maximowiczii...
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Báo cáo lâm nghiệp: "Effects of resource availability on condensed tannins and nitrogen in two Quercus species differing in leaf life span" doc
... Available online at:c INRA, EDP Sciences, 2007 www.afs-journal.orgDOI: 10.1051/forest:2007021Original articleEffects of resource availability on condensed tannins and nitrogen in two Quercus species ... radiation), at two water regimes (500 and 800 mm) and with two nutrient availabilities(standard substrate and 7% increase in soil N). The concentrations of soluble condensed tannins (CT) and nitrogen ... A., Nitsan Z., Effect of daily supplementation of polyethylene glycol on intake and di-gestion of tannin-containing leaves (Quercus calliprinos, Pistacialentiscus and Ceratonia siliqua) by goats,...
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Báo cáo lâm nghiệp: "Chemical composition of the periderm in relation to in situ water absorption rates of oak, beech and spruce fine roots" doc
... 763772â INRA, EDP Sciences, 2004DOI: 10.1051/forest:2003071Original articleChemical composition of the periderm in relation to in situ water absorption rates of oak, beech and spruce fine rootsChristoph ... from the terminal root tip in all species. At 500 mmdistance from the tip, periderm thickness had increased to 50 àm in beech and spruce, and to 70 µm in oak. In beech and oak rootlets, the periderm ... needed to show whether oak, beech and spruce indeed differ with respect to drought sensitivity of fine rootgrowth and mortality. Finally, it is necessary to increase the spatial resolution of water...
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Báo cáo lâm nghiệp: "Environmental control of CO assimilation rates 2 and stomatal conductance in five oak species growing under field conditions in Greece" ppsx
... efficiency and CO 2 compensation pointassociated with midday stomatal closure and mid-day depression of net CO 2 exchange of leaves of Quercus suber. Planta 1 62, 193 -20 3Tenhunen ... patterns in forest stands of lobolly pine (Pinus taeda L). In: Abstract collection of the international workshop onEcophysiology and Genetics of Trees and Forest in a Change Environment, ... during summer drought in leaf CO 2 uptake rates in macchia shrubs growing in Por-tugal: limitation due to photosynthetic capacity car-boxylation efficiency and stomatal conductance. ...
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Báo cáo lâm nghiệp: "des ectomycorhizes naturelles entre le hêtre (Fagus sylvatica) et deux lactaires (Lactarius blennius var viridis et Lactarius subdulcis). Il. Caractérisation cytochimique des interfaces" docx
... des ectomycorhizes naturelles entre le hêtre (Fagus sylvatica) et deux lactaires (Lactarius blennius var viridis et Lactarius subdulcis). Il. Caractérisation cytochimique des ... dans les struc-tures des mycorhizes et, d’autre part, dansles transferts entre les deux partenaires.MATÉRIEL ET MÉTHODESLes mycorhizes sont triées, prélevées et fixéespour ... ciment et les parois des cel-lules corticales réagissent avec la mêmeintensité et la limite entre les deux est diffi-cile à distinguer. Le bord interne des cel-lules peut...
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Báo cáo lâm nghiệp: "Environmental control of CO assimilation rate and leaf 2 conductance in two species of the tropical rain forest of French Guiana (Jacaranda copaia D. Don and Eperua falcata Aubl.)" pdf
... &Cowan I.R., eds.), Stanford University Press,Stanford, pp. 323 -351 Environmental control of CO 2 assimilation rate and leaf conductance in two species of the tropical rain ... of the tropical rain forest of French Guiana (Jacaranda copaia D. Don and Eperua falcata Aubl.)R. Huc1J.M. Guehl 2 1 Station de Recherches Forestières, INRA, BP 709, 97387 ... season in artifical 3 yr oldstands of J. copaia, a long living pioneer species occurring in open sites, and of E. falcata, a common species of the mature forest canopy.Materials...
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Báo cáo lâm nghiệp: "Influence de la nutrition du hêtre (Fagus sylvatica sur la sensibilité au chancre provoqué par Nectria ditissima" pdf
... Influence de la nutrition du hêtre (Fagus sylvatica L.) sur la sensibilité au chancre provoqué par Nectria ditissima Tul.R. PERRINon de RechercheJ. GARBAYE sur la Flore ... que la nutrition exerce unegrande influence sur la sensibilité du hêtre au chancre et montre l’avantage tiré d’une nutrition équilibrée sur la sensibilité du hêtre à ... le début de l’évolution de la nécrose. Au cours de la phase de résistance active la rộduction de la taille de la nộcroseconnaợt de substantielles variations. La cicatrisation...
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