Within and between-tree variation of wood density components in Pinus sylvestris at five sites in Portugal

Fernandes, Cláudia Oliveira; Gaspar, Maria João; Pires, Joana; Silva, Maria Emília; Carvalho, Ana; Brito, Jorge Luís Silva; Lousada, J.

doi:10.1007/s00107-016-1130-2

Cited by 10 publications

(10 citation statements)

References 48 publications

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“…In this study, the high variability of the basic density for trees within a specific spacing may be related to the high genetic variability of the trees and bifurcation that may affect radial growth, which in turn affects all wood features (Fernandes et al 2017). The great variation in total diameter and heartwood diameter of trees established by seed plantations (e.g., 8.00 to 16.40 cm for denser spacing, 11.80 to 16.30 cm for wider spacing) possibly overcame any significant effect of spacing since the range of values overlap.…”

Section: Physical and Anatomical Properties Of T Vulgaris Woodmentioning

confidence: 96%

Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Silva

Bufalino

et al. 2019

J. For. Res.

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spacings (6.0 m 2 and 7.5 m 2 ). Genetic variability of the T. vulgaris seed stand and/or high heritability of wood traits overcame the effect of different spacing on all morphological, physical, chemical and energetic properties of T. vulgaris wood. This species has moderate basic density when cultivated at spacings larger than 6 m 2 and net heating value above 7.95 MJ/kg, which is suitable for bioenergy purposes. The high variation in wood properties within tree spacing is strongly indicative of great potential for genetic breeding. The fast growth and the suitable moderate wood basic density confirm the outstanding potential of homogeneous plantations of T. vulgaris for providing wood for bioenergy.

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Section: Physical and Anatomical Properties Of T Vulgaris Woodmentioning

confidence: 96%

Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Silva

Bufalino

et al. 2019

J. For. Res.

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“…The usual air-dry wood density values of approximately 0.566 g/cm 3 in 30-year-old trees are worth mentioning [156], but which can reach average values of 0.657 g/cm 3 at 70 years old [150]. These values are identical to those of P. nigra (0.588 ± 0.096 g/cm 3 ) [116,117] and P. sylvestris (0.588 ± 0.101 g/cm 3 ) [114,115] with identical ages and growing in Portugal, but higher than P. sylvestris wood from Sweden, France and the Czech Republic (0.391-552 g/cm 3 ) [157][158][159][160], Picea abies (0.410-516 g/cm 3 ) [157], and Abies balsamea (0.351 g/cm 3 ) [161].…”

Section: Physical Propertiesmentioning

confidence: 96%

“…Numerous studies carried out with resinous species in Portugal and Spain have repeatedly demonstrated the absence of correlation between ring width and wood quality characteristics [107][108][109][110][111][112][113][114][115][116][117] which are sufficiently clear to stop fearing, for this species growing in these regions, any hypothetical antagonism between the vigor and the wood quality. In this regard, also worth mentioning the work carried out by Fernandez-Golfin and Diez [107] on the influence of the ring width on the wood density and other physical-mechanical properties of wood in different species (among which P. pinaster).…”

Section: Conifers -Recent Advancesmentioning

confidence: 99%

Maritime Pine, Its Biological and Silvicultural Traits for the Basis of Natural Resources: An Overview

Fonseca¹,

Gonçalves²,

Lousada³

2022

Conifers - Recent Advances

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Maritime pine (Pinus pinaster Aiton) is a forest tree species with a high representation in southwestern European countries, in particular Portugal, Spain, and France. The species traits and their flexibility and plasticity are of importance both for timber and to the sustainability of the forest systems. Extensive research has been made on the maritime pine systems and productions. The aim of this study is to review the state-of-the art on the knowledge of the species, their forest systems, and their productions, to identify vulnerabilities and to summarize tools to help its management. The specific objectives of this review are: i) characterizing maritime pine, its distribution, genetic material and provenances, the biotic and abiotic disturbances, the diversity and sustainability of its forest systems; (ii) its management, encompassing the silvicultural systems and practices; (iii) to list existing growth models, simulators and decision support systems; and (iv) present information on wood technology, including sylvotechnology, wood properties, and their use.

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“…the experimental samples are of high quality and the data meet the requirements, and the test data is accurate. Several studies have shown that the MFA in the annual rings near the young timber of the medullary heart is usually large, and it tends to decrease with the increase in tree age, and then remains relatively stable [23][24][25].…”

Section: Microfibril Angle (Mfa)mentioning

confidence: 99%

Intratree Variation in Viscoelastic Properties of Cell Walls of Masson Pine (Pinus Massoniana Lamb)

Cai¹,

Guo²,

Li³

2022

Journal of Renewable Materials

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In this study, Pinus massoniana Lamb at different heights, across the annual rings, and between earlywood and latewood was measured by X-ray diffraction and the chemical composition was analyzed by chemical treatment. Results indicated that the microfibril angle (MFA) decreased and the chemical composition changed little with the increase in height from 1 m to 9 m. In the radial direction, the MFA decreased and the chemical composition changed little with an increase in annual rings. The cellulose content of latewood was higher than that of earlywood. The viscoelastic changes of wood cell walls at different heights, across the annual rings by the method of quasi-static nanoindentation and dynamic modulus mapping techniques. Results indicated that the wood cell walls' elastic modulus increased, and the creep rate and creep compliance decreased with the increase in height; The elastic modulus and hardness increased with the annual rings. The cell walls' storage modulus increased and the loss modulus gradually decreased with an increase in height; the storage modulus gradually increased and the loss modulus decreased with the annual rings.

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Within and between-tree variation of wood density components in Pinus sylvestris at five sites in Portugal

Cited by 10 publications

References 48 publications

Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Maritime Pine, Its Biological and Silvicultural Traits for the Basis of Natural Resources: An Overview

Intratree Variation in Viscoelastic Properties of Cell Walls of Masson Pine (Pinus Massoniana Lamb)

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