Growth rate and wood properties of Norway spruce cutting clones on different sites

Raiskila, Sanni; Saranpää, Pekka; Fagerstedt, Kurt; Laakso, Tapio; Löija, Mia; Mahlberg, Riitta; Paajanen, Leena; Ritschkoff, Anne-Christine

doi:10.14214/sf.341

Cited by 29 publications

(23 citation statements)

References 13 publications

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“…Site variation amounted to 10% of the total variation (Tab. III), and also affected the relationship between cambial age and mean ring density, in agreement with a study by Raiskila et al (2006).…”

Section: Determinants Of Mean Ring Density In Norway Sprucesupporting

confidence: 91%

Decreasing trend and fluctuations in the mean ring density of Norway spruce through the twentieth century

Franceschini

Bontemps

Gelhaye³

et al. 2010

Ann. For. Sci.

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Abstract• Studies on wood density variations are necessary for estimating the forest carbon pool. Further, they can help predict the technological properties of wooden end-products. While there have been frequent reports on the relationships between wood density, cambial age, and ring width, there is little information about the historical trend in wood density for the last century, particularly in the context of global climate change.• In this study, different sources of variations in mean ring density (site, tree, ring age, ring width, and calendar date) were studied using an original sampling design. A total of 105 Norway spruce (Picea abies Karst.) trees were sampled in north-eastern France, from thirteen sites with trees of different ages growing at the same site and in similar conditions. X-ray densitometry measurements were performed on samples taken at breast height. The chronology of the mean ring density over the 20th century was estimated by using a statistical modelling approach based on linear mixed-effects models after accounting for the effect on the mean ring density introduced by different ring widths, cambial ages, sites, and trees.• The mean ring density of Norway spruce was seen to decrease by about 18 kg m −3 relative to the year 1900. The chronology showed no evolution between 1900 and 1950, a steep decline from 1950 to 1980 (reaching a maximum decrease of 30 kg m −3 ), followed by an increase from 1980 to 2000.• The observed decrease was consistent with the results of previous works and supports the hypothesis that this could indicate a global trend and that this trend is independent of the wood structure. Moreover, high inter-annual density variations were found. In future studies, the influence of climate on the wood density and within-ring properties must be clarified to identify the anatomic causes for wood density variations.

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Section: Determinants Of Mean Ring Density In Norway Sprucesupporting

confidence: 91%

Decreasing trend and fluctuations in the mean ring density of Norway spruce through the twentieth century

Franceschini

Bontemps

Gelhaye³

et al. 2010

Ann. For. Sci.

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“…The relatively stronger influence of density on MOR compared to MOE is supported by e.g. Saranpää and Repola [40] and Raiskila et al [35]. The environmental correlation between RW and density is very strong (r b = −0.93) and so is the correlations between density and both MOE and MOR (r b > 0.94).…”

Section: Correlationsmentioning

confidence: 78%

Variation in wood properties among five full-sib families of Norway spruce (Picea abies)

Steffenrem¹,

Saranpää²,

Lundqvist³

et al. 2007

Ann. For. Sci.

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-Genetic-and environmental variation and correlation patterns were characterized for modulus of elasticity (MOE), modulus of rupture (MOR) and related wood traits: latewood proportion, wood density, spiral grain, microfibril angle and lignin content in five full-sib families of Norway spruce. The families were evaluated on the basis of clearwood specimens from the juvenile -mature wood transition zone of 93 sampled trees at age 30 year from seed. Family-means varied significantly (p < 0.05) for all wood traits studied except lignin content. MOE varied between 7.9-14.1 GPa among trees and 9.4-11.0 GPa among families. MOR varied between 47-87 MPa among trees and 61-71 MPa among families. Families remained significantly different in an analysis of specific MOE (MOE/density) and MOR (MOR/density). Hence, solely relying on wood density as a wood quality trait in tree breeding would not fully yield the potential genetic gain for MOE and MOR. Correlations between wood structural traits and specific MOE and MOR are presented and discussed.

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“…3b, the LWD was more variable at Kp than Dg, and trends from pith to bark for LWD were steeper (i.e., more sensitive) than other density traits. Raiskila et al (2006) also observed that the latewood components are relatively sensitive to environmental and site effects within clones of Picea abies.…”

Section: Effects Of Site Differencesmentioning

confidence: 86%

Variations in the radial growth and wood density components in relation to cambial age in 30-year-old Pinus brutia Ten. at two test sites

Güller

Işık

Çetinay

2012

Trees

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Radial growth and wood density are important traits in assessing wood quality. Our objective was to investigate patterns of variation of radial growth (ring width, earlywood width, latewood width, latewood proportion) and wood density (ring average density, earlywood density, latewood density) components in a 30-year-old Pinus brutia at two test sites in Turkey. Wood increment cores at a height of 1.30 cm (dbh) from 1,010 trees at age 30 years were evaluated at two test sites. The radial growth and wood density traits of the individual rings were measured using X-ray densitometry. The test sites showed statistically significant differences in the radial growth traits but not in the wood density traits, suggesting that the wood density traits are less subject to environmental changes. The ring average density was relatively low (485 kg/m 3 ) at early cambial ages (near the pith) and increased to 501 kg/m 3 at later cambial ages (near the bark). The latewood density was 550 kg/m 3 near the pith, increased steadily to 630 kg/m 3 at cambial age 12, and remained stable thereafter. In contrast, the earlywood density and latewood proportion were highest near the pith. The twelfth ring from the pith appeared to represent the transition from juvenile to mature wood. The unique relationships among early and latewood densities and latewood proportion in the juvenile and mature wood contribute to more uniform wood both within a given annual ring and between the juvenile and mature portions of the stem in P. brutia. Thinning increased the ring width, latewood proportion, and ring average density. Trees (2012) 26:975-986 977 EWD, LWD, and LWP in the juvenile and mature wood J M J M J M J M J M J M 0 1 2 3 4 5

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Growth rate and wood properties of Norway spruce cutting clones on different sites

Cited by 29 publications

References 13 publications

Decreasing trend and fluctuations in the mean ring density of Norway spruce through the twentieth century

Decreasing trend and fluctuations in the mean ring density of Norway spruce through the twentieth century

Variation in wood properties among five full-sib families of Norway spruce (Picea abies)

Variations in the radial growth and wood density components in relation to cambial age in 30-year-old Pinus brutia Ten. at two test sites

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