Báo cáo lâm nghiệp: " Scots pine responses to number and density of inoculation points with Leptographium wingfieldii Morelet, a bark beetle-associated fungus" docx
Báo cáo lâm nghiệp: " Scots pine responses to number and density of inoculation points with Leptographium wingfieldii Morelet, a bark beetle-associated fungus" docx
... of the total number of inoculation points, as a large increase of blue stain-ing was observed in the sapwood with anincreasing amount of inoculation points, at a density ... remained unaf-fected by density or total number of inoc-ulation points (figure 3).The total area of damaged sapwoodincreased significantly with inoculation density and number ... Orléans, and grownon a malt agar medium as a monospore strain.At each inoculation point, bark and phloemwere removed with a 5-mm diameter corkborer, and a 5-mm diameter...
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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
... timber and pine nuts. Together with these main commercial productions,stone pine forests play an important role as landscape gen-erators, recreational areas, and soil protectors. Management of ... Table III can be used to calculate the most likely of the four rot risk classes as a function, for each fixed basalarea, of the age and the dominant height of the stand, obtainingfor each value ... N(d)N(d) a= 1[z(u a ) −z(u a + d)]2(5)where N(d) is the number of pairs of samples u a and u a + dwhich distance from each other is within the distance lag cen-tred at d ,andz(u a )andz(u a +d) are...
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Báo cáo lâm nghiệp: "Multivariate statistical approach to comparison of the nutrient status of Norway spruce (Picea abies [L.] Karst.) and top-soil properties in differently managed forest stands" potx
... population statistical evaluation of data was usually done on a standard significance level P < 0.05. e basic assumptions about data were as-sessed by exploratory data analysis (EDA) according ... cluster analysis (CLU) and principal component analysis (PCA) (J 1998). Alternatively to CLU multi-variate analysis of variance (MANOVA) was applied. CLU and MANOVA were used to evaluate ... silvicultural activities and left to natural develop-Table 1. Some basic mensurational data of the RPs (according to P 2006)Spruce standMean stemStanding volume (m3/ha)Stand basal area (m2/ha)d1.3...
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Báo cáo lâm nghiệp: "Rodent-caused damage to forest trees from the viewpoint of forestry practice" potx
... damage to plantations becomes apparent, being unable to defend against this harmful factor. One of the reasons for this passive approach to deal-ing with damage caused by small mammals is certain ... of several fac-tors in a specific area at a specific time (S et al. 1993). e occurrence of damage cannot be predicted with certainty as significant damage may appear perhaps at a small ... ashmapleoaklimelarchfirgoat willow pine spruceArea (%)Tree speciesrepeated reforestation (% stands)damage (% stands)repeated reforestation (% stands)damage (% stands)repeated reforestation (% stands)damage...
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Báo cáo lâm nghiệp: "Biomass functions applicable to oak trees grown in Central-European forestry" doc
... amount of parameters and standard deviations of residuals of the tested sites.Reference standFor a quantitative analysis of the parameterized allometric equations of this study and available ... significant, although MPE was further Table 2. Stand characteristics of a generated test stand exemplifying the typical management of oak; mean stand height, basal area and stocking density (N) are ... under bark, bark, living branches and dead branches was also explored on the above fictitious oak stand managed in a classical way at 25, 50 and 100 years of age (Table 2, Fig. 3). e estimated...
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Báo cáo lâm nghiệp: "Variability in Populus leaf anatomy and morphology in relation to canopy position, biomass production, and varietal taxon" docx
... per leaf. Stomatawere counted and stomatal density (adaxial stomatal density, SDd, and abaxial stomatal density, SDb) was calculated as the number of stomata per unit leaf area (mm−2) (Tab. ... bilateral palisade parenchyma layers [15, 24, 57, 65, 70].Leaves of P. trichocarpa are known to have a small number of large stomata and a low ratio of adaxial/abaxial stomatal den-sities [15, 22, ... canopy position, anatomical and morphological leaf characteristics (i.e. thickness of epidermis, of palisade and spongy parenchyma layers, density and length of stomata, leaf area, specific leaf...
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Báo cáo lâm nghiệp: "Relationship between root growth potential and field performance in Aleppo pine" doc
... 67–81.[17] Pausas J.G., Bladé C., Valdecantos A. , et al., Pines and oaks in therestoration of Mediterranean landscapes of Spain: New perspectivesfor an old practice – a review, Plant Ecol. 171 ... Politécnica of Valencia and the Valencia RegionalGovernment (Generalitat Valenciana).REFERENCES[1] Alloza J .A. , Análisis de repoblaciones forestales en la ComunidadValenciana. Desarrollo de ... catalyst; P was assayed colorimetrically using the phos-phomolybdovanadate method (420 nm) in a colorimeter (TechniconAutoanalyzer AAII); K was determined using a Varian SpectraAA-10 Atomic Absorption...
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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
... 350-1acts as a guideline for the determination and classification of the natural durability of solid wood against the attack of wooddestroying organisms. Part 2 of the same standard illustrates* ... case useful to refer to the Europeanstandardization context related to the biological durability of wood and wood-based panels. The EN standards consider that,in case of a possible attack by wood ... Definition of hazard classes of biological attack – Part 3: Application to wood-based panels.EN 350-1 Durability of wood and wood-based products. Natural durabi-lity of solid wood. Part 2: Guide to...
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Báo cáo lâm nghiệp:" Variation in the decay resistance and its relationship with other wood characteristics in old Scots pines" ppsx
... natural durability of Scots pine wood. The variation inthe in vitro decay rate, and in the extractive content and sorp-tion of water by the sapwood and inner and outer heartwood of mature Scots ... this small degree of variation explained to some extentthe large variation in the heartwood mass loss. The uptake of water at the start of the malt agar plate decay test took placevia adsorption. ... Serpula lacrymans, Poria/Antrodia sp. and Coniophoraputeana, all of which cause brown-rot [20]. Untreated Scots pine heartwood is classified as moderately to slightly resistantagainst decay, while...
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Báo cáo lâm nghiệp: "Using past growth to improve individual-tree diameter growth models for uneven-aged mixtures of Pinus sylvestris L. and Pinus nigra Arn. in Catalonia, north-east Spain" doc
... nigra (solid line) as a function of predictedpast radial growth, dbh, basal area, and total basal area of larger trees (thin lines indicate the standard error of the mean).Figure 2. Measured and ... (m2·ha–1), BALnig is the total basal area of P. nigra trees largerthan the subject tree (m2·ha–1), BALsyl+acc is the total basal area of trees other than P. nigra and larger than the ... grateful to Jose Antonio Villanueva, head of the Spanish NationalForest Inventory, for making the Forest Inventory data available and forhis cooperation. We thank Editor G. Aussenac and the anonymous...
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