Báo cáo lâm nghiệp: " Influence of temperatures and precipitation on radial increment of Orlické hory Mts. spruce stands at altitudes over 800 m a.s.l" ppt

... to examine the eﬀect of the most important climatic factors (tem-perature and precipitation) on the radial increment of selected spruce stands in the Orlické hory Mts. MATERIAL AND METHODSResearch ... Inﬂuence of temperatures and precipitation on radial increment of Orlické hory Mts. spruce stands at altitudes over 800 m a.s.l. M. R, P. Č, T. K, E. P, T. ŽFaculty of ... from 1888 to 2007.Creation of the climatic time series for the Orlické hory Mts. For the purposes of our research the climatic time series of temperatures and precipitation for the Orlické hory...

Báo cáo lâm nghiệp: " Influence of stand density, thinning and elevated CO2 on stem wood density of spruce" pot

... Republic, Project No. 2B06068, and the Research Intention of ISBE AS CR, Project No. AV0Z60870520.Inﬂuence of stand density, thinning and elevated CO2 on stem wood density of spruceI. T1, ... cultivation. Stand density of two subvariants (s – sparse with ca 5,000 trees/ha and d – dense with ca 10,000 trees/ha) and thinning impact (intensity of 27%) on SWD and its variation along the stem ... Average stem wood density in elevated (E) and ambient (A) concentration of CO2 and sparse (s) and dense (d) subvariant independent from vertical stem proﬁle; (a) 2002, i.e. after 6 years of the...

Báo cáo lâm nghiệp: " Root system development and health condition of sycamore maple (Acer pseudoplatanus L.) in the air-polluted region of Krušné hory Mts" ppt

... diﬀerences in the root system development and health condition were found either between the trees of identical height from self-seeding and from planting in the region of Krušné hory Mts. and in the ... 452–461JOURNAL OF FOREST SCIENCE, 53, 2007 (10): 452–461 Root system development and health condition of sycamore maple (Acer pseudoplatanus L.) in the air-polluted region of Krušné hory Mts.O. ... trees of the same height from planting with severe and small root system deformations in the region of Krušné hory Mts. and in the region of Bohemian-Moravian Up-land.(7) Mutual comparison of...

Báo cáo lâm nghiệp: "Influence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidified mountain site" potx

... Foundation, Project No. 070108.Inﬂuence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidiﬁed mountain siteI. K1, V. B3, ... K., 2002. Biomass production and nutrient accumulation in short-rotation grey alder (Alnus incana (L.) Moench) plantation on abandoned land. Forest Ecology and Management, 161: 169–179.URI ... harsh mountainous environment, on the other hand it is an opportunity to introduce a broadleaved admixture there and thus to diversify the coniferous stands in terms of composition and structure.Some...

Báo cáo lâm nghiệp: " Influence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské hory Mts." pptx

... 0002070201. In uence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské ... this variant. On the other hand, in the basalt and control treatments, the foliar Ca concentrations have signiﬁcantly increased since planting. e concentration of Mg in the leaves of limed ... carpatica W. et K.) at an environmentally harsh mountain site and a response of this species to altered soil chemistry after dolomitic limestone and basalt grit applications. e Carpathian birch proved...

Báo cáo lâm nghiệp: "Influence of light and competition on crown and shoot morphological parameters of Norway spruce and silver fir saplings" doc

... spp. and Brachipodium pinnatum. The effects of light level and competition on growth and on crown and shoot morphological parameters were assessed for 76 saplings(48 Norway spruce and 28 silver ... traits [13], and possibly in allocation pat-terns, but not to morphological ones. 4. CONCLUSIONSResults of the present study confirm the importance of light on growth and on crown, shoot and needle ... 10.1051/forest:2005019Original articleInfluence of light and competition on crown and shoot morphological parameters of Norway spruce and silver fir saplings Giacomo GRASSIa,b*, Raffaello GIANNINIc...

Báo cáo lâm nghiệp: "Influence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)" docx

... articleInfluence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)Badr ALAOUI-SOSSÉ*, Bastien GÉRARD, Philippe BINET, Marie-Laure TOUSSAINT, ... realeffect of flooding via nitrogen availability in the soil.During flooding, amino acid contents in taproot of stressed seedlings remained high and similar to that of controls. Thisresult indicated ... underlined the involve-ment of cytokinin in bud break initiation of Quercus rubra seedlings. Initiation of new roots in stressed seedlings began26 days after flooding exposure, length and biomass...

Báo cáo lâm nghiệp:"Influence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical species" pot

... articleInfluence of basic density and temperature on mechanical properties perpendicular to grain of ten wood tropical speciesSandrine Bardeta*, Jacques Beauchêneb and Bernard Thibauta,ca Laboratoire ... function of temperature for one wood species (Dicorynia). Each cross represents onevalue of the three repetitions.Figure 7. Illustration of the model of evolution of one criterion respect to temperature. ... effect of temperature on every crite-ria, it was suggested to measure softening temperature on graphs. The curves of criterion in function of temperature wereFigure 6. Evolution of the twelve mechanical...

Báo cáo lâm nghiệp:"Poplar plywood resistance to wood decay agents: efficacy of some protective treatments in the light of the standard ENV 12038" ppt

... 8389â INRA, EDP Sciences, 2003DOI: 10.1051/forest: 2002077Original articlePoplar pl ywood resistance to wood decay agents: efficacy of some protective treatments in the light of the standard ENV ... time.Analyzing the different plywood protections, the combination of resin coating and edge painting did not lead to a significantimprovement in the level of mass loss than the resin coatingalone. ... panelproducts made of or containing wood. ENV 12038 Durability of wood and wood- based products – Wood- basedpanels – Method for determining the resistance against wood- destroying basidiomycetes. To access...

Báo cáo lâm nghiệp: "Influence of herbaceous competitors on early growth in direct seeded Fagus sylvatica L. and Quercus robur L" ppt

... 781788â INRA, EDP Sciences, 2005DOI: 10.1051/forest:2004075zOriginal articleInfluence of herbaceous competitors on early growth in direct seeded Fagus sylvatica L. and Quercus robur L. Magnus ... theafforestation of farmland using direct seeding of beech and oak.Firstly, there was no effect of competition from herbaceous vegetation on seedling growth during the first year. In addition,competition ... thedevelopment of direct seeded beech (Fagus sylvatica L.) and oak (Quercus robur L.) were monitored over three years and interpreted accordingto resources availability. Herbaceous competitors clearly...

Báo cáo lâm nghiệp: "Influence of exogenous L-proline on embryogenic cultures of larch (Larix leptoeuropaea Dengler), sitka spruce (Picea sitchensis (Bong.) Carr.) and oak (Quercus robur L.) subjected to cold and salt stress" pdf

... intracellular proline concentration in embryogenic cultures subjected to below freezing temperaturesThe concentration of proline in embryogenic cultures of larch, sitka spruce and oak is shown in ... sitchensis (Bong.) Carr.) Sitka spruce ECs were raised from immature embryos of sitka spruce clones and one cell line (574F) was maintained in sitka spruce embryo initiation medium [9]. 2.1.3. Oak (Quercus ... and oak (results not shown). 3.2. Influence of proline in relation to concentrations of NaClFigure 2 shows the growth rate of larch embryogenic cul-tures grown in varying concentrations of...

Báo cáo lâm nghiệp: "Influence of individual tree and stand attributes in stem straightness in Pinus pinaster Ait. stands" pps

... 10.1051/forest:2004005Original articleInfluence of individual tree and stand attributes in stem straightness in Pinus pinaster Ait. standsMiren DEL RÍO, Felipe BRAVO*, Valentín PANDO, Gemma SANZ, Rosario ... relationship between stem straightness and tree and stand attributes when the competitionbegins to be important. Straightness of maritime pine seedlings and saplings wasinfluenced by stand density only ... between root system and tree stability in first ages, particularly in plantations [12,23]. Pinus pinaster is the most extensive conifer in Spain, cov-ering over 700 000 ha in pure stands and 600...

Báo cáo lâm nghiệp: "Influence of fire and tree-fell on physiological parameters in Quercus ilex resprouts" potx

... mineral content and leaf area (LA)determinations. Environmental conditions (inci-dent radiation [PAR], air and leaf temperature,vapor pressure deficit) during sampling and mesurements ... differences in nutri-ent (N,C,P,K and Ca) and soluble carbohydrate concentrations in leaves of resprouts originated after fire or after tree-fell indicates the independence of nutrients ... located within a Mediterranean watershed (northeast Spain). Resprouting vegeta-tion of Quercus ilex after fire or after tree-fell showed, during the next growing seasons, enhancedphotosynthesis,...

Báo cáo lâm nghiệp: "Influence of marine salts on the localization and accumulation of surfactant in the needles of Pinus halepensis Mill" ppsx

... penetration and accumulation of organic chemicals in plant cuticles.Rev Environ Contam Toxicol 108, 1-70 Original articleInfluence of marine salts on the localization and accumulation ... windduring storms and damage the coastalvegetation. LABS accumulation in the needles of P halepensis Mill needs to beconfirmed on pines growing in natural con-ditions, ... In this paper,we report the influence of marine salt on the leaf uptake of LABS in Pinus halepensis Mill. To mimic the conditions found duringstorms, trees were exposed...

Báo cáo lâm nghiệp: "Cavitation in trees and the stems hydraulic sufficiency of woody" doc

... Tyree and Sperry (1988)attempted to answer these questions bymeasuring and calculating what might becalled the hydraulic sufficiency of trees. In valuing hydraulic sufficiency, ... review of the conclusions of the steady-state model and the data used will aid in the under-standing of the more advanced model pre-sented here.Overview of the steady-state ... resources of the tree. Trees thatshow strong apical dominance are the exception. In these trees, the LSCremains high or increases towards the dominant apex (Ewers and Zimmermann,1984a,...

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