Variation in selected mechanical properties of Japanese larch (Larix kaempferi, [Lamb.] Carr.) progenies/provenances trials in Eastern Canada

Cáceres, Claudia B.; Hernández, Roger E.; Fortin, Yves

doi:10.1007/s00107-018-1302-3

Cited by 12 publications

(12 citation statements)

References 21 publications

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“…Takada et al (1992) reported that among-geographic variations in modulus of elasticity of stems were recognized in L. kaempferi trees planted in provenance-trial stand in Japan. Similar among-geographic variations in L. kaempferi were also found in the mechanical properties of wood (Koizumi et al 2005;Cáceres et al 2018). In the present study, as shown in Tables 2, 3 and 4, significant differences in tree height, stress-wave velocity of stem, dynamic Young's modulus of stems and logs, annual ring width and latewood percentage were found among stands, suggesting that L. sibirica trees naturally grown in Mongolia have geographic variations in the mechanical properties of their wood.…”

Section: Geographic Variation Of Wood Propertiessupporting

confidence: 52%

“…Basic wood properties of Larix species have been reported by many researchers (Koizumi et al 1990(Koizumi et al , 2003(Koizumi et al , 2005Takada et al 1992;Takata and Hirakawa 2000;Zhu et al 2000;Nagao et al 2003;Karlman et al 2005;Ishiguri et al 2008;Luostarinen 2011;Fukatsu et al 2015;Neverov et al 2017;Cáceres et al 2018). Although tree age was different, stress-wave velocity values in L. sibirica (Table 2) were similar or lower to those in L. kaempferi (Ishiguri et al 2008;Fukatsu al.…”

Section: Comparison Of Measured Characteristics With Other Larix Speciesmentioning

confidence: 85%

“…It is known that geographical variations are found in growth characteristics and wood properties in Larix species (Toda and Mikami 1976;Park and Fowler 1983;Takada et al 1992;Koizumi et al 2003Koizumi et al , 2005Lukkarinen et al 2009;Batkhuu et al 2010;Nagamitsu et al 2014;Fedorkov 2014;Neverov et al 2017;Cáceres et al 2018). Takada et al (1992) reported that among-geographic variations in modulus of elasticity of stems were recognized in L. kaempferi trees planted in provenance-trial stand in Japan.…”

Section: Geographic Variation Of Wood Propertiesmentioning

confidence: 99%

“…The genus Larix consists of about ten species and these species are distributed throughout the northern hemisphere (Cáceres et al 2018). Wood resources of these species obtained from both natural stands and plantations have good physical and mechanical properties as well as high decay resistance (Koizumi et al 1990(Koizumi et al , 2003(Koizumi et al , 2005Takada et al 1992;Zhu et al 2000;Gierlinger et al 2004;Venäläinen et al 2006;Ishiguri et al 2008;Luostarinen 2011;Fukatsu et al 2015;Neverov et al 2017;Cáceres et al 2018). In Mongolia, Larix sibirica (Münchh.)…”

Section: Introductionmentioning

confidence: 99%

“…The geographical variations of Larix species have been investigated for growth characteristics and wood properties (Toda and Mikami 1976;Park and Fowler 1983;Takada et al 1992;Abaimov et al 2002;Koizumi et al 2003Koizumi et al , 2005Kuz'mina 2004;Lukkarinen et al 2009;Batkhuu et al 2010;Dulamsuren et al 2011;Nagamitsu et al 2014;Fedorkov 2014;Neverov et al 2017;Cáceres et al 2018). In wood properties, Cáceres et al (2018) investigated the variation in selected mechanical properties in 12-year-old trees from 20 different provenances of L. kaempferi (Lamb.) Carrière planted in Quebec, Canada.…”

Section: Introductionmentioning

confidence: 99%

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Geographic variations of wood properties of <i>Larix sibirica</i> naturally grown in Mongolia

Tumenjargal¹,

Ishiguri²,

Aiso-Sanada³

et al. 2018

Silva Fenn.

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Highlights• Significant differences (p < 0.01) among five stands were found in tree height, stress-wave velocity of stems, dynamic Young's modulus of stems and logs, annual ring width, and latewood percentage, suggesting that there was geographic variation of mechanical properties of wood in Larix sibirica (Münchh.) Ledeb. grown in Mongolia. • Dynamic Young's modulus of logs in L. sibirica trees can be predicted by stress-wave velocity of stems. • Stem diameter of L. sibirica naturally grown in Mongolia is closely related to radial growth at initial stage of growth, especially within the first twenty years. AbstractGeographic variations in growth, stress-wave velocity of stem, dynamic Young's modulus of stems and logs, annual ring width, latewood percentage and basic density were investigated for Larix sibirica (Münchh.) Ledeb. naturally grown in Mongolia. A total of 250 trees with 20 to 30 cm in stem diameter at a height of 1.3 m above ground level were selected from each natural stand in five different provenances in Mongolia. In addition, five trees in each stand were cut for measuring dynamic Young's modulus of stems and logs, annual ring width, latewood percentage and basic density. Mean values of stress-wave velocity of stems in each stand ranged from 2.92 to 3.41 km s -1 , and the mean value of five stands was 3.23 km s -1 . Mean values of dynamic Young's modulus of logs in each stand ranged from 5.17 to 9.72 GPa. A significant correlation (r = 0.798, p < 0.01) was found between stress-wave velocity of stems and dynamic Young's modulus of logs. Among the five stands, the highest and the lowest values of average annual ring number were 193 and 44, respectively. Mean values of basic density in five trees within each stand were examined and ranged from 0.52 to 0.56 g cm -3 . Significant differences among five stands were found in tree height, stress-wave velocity of stem, dynamic Young's modulus of stems and logs, annual ring width and latewood percentage, suggesting that L. sibirica trees naturally grown in Mongolia have geographic variations in mechanical properties of wood.

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Section: Geographic Variation Of Wood Propertiessupporting

confidence: 52%

Section: Comparison Of Measured Characteristics With Other Larix Speciesmentioning

confidence: 85%

Section: Geographic Variation Of Wood Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Geographic variations of wood properties of <i>Larix sibirica</i> naturally grown in Mongolia

Tumenjargal¹,

Ishiguri²,

Aiso-Sanada³

et al. 2018

Silva Fenn.

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Physical and mechanical properties of wood and their geographic variations in Larix sibirica trees naturally grown in Mongolia

Tumenjargal

Ishiguri

Aiso³

et al. 2020

Sci Rep

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We examined the physical and mechanical properties of wood in Siberian larch (Larix sibirica) trees that grow naturally in five Mongolian provenances (Khentii, Arkhangai, Zavkhan, Khuvsgul, and Selenge) and the geographic variations between them. Five trees with stem diameters of 20 to 30 cm at 1.3 m above ground were collected from each provenance. The mean values of the modulus of elasticity (MOE), modulus of rupture (MOR), compressive strength parallel to grain (CS), and shearing strength (SS) ranged from 7.03 to 9.51 GPa, 79.8 to 103.9 MPa, 46.3 to 51.1 MPa, and 10.4 to 13.0 MPa, respectively. Significant differences were found in radial and tangential shrinkage, MOE, MOR, and SS in wood among the five provenances. In addition, juvenile wood had inferior physical and mechanical properties in comparison to mature wood within and among provenances. Furthermore, there were significant differences in all examined properties, except for CS, in mature wood among the five provenances. Higher correlation coefficients were also obtained in mature wood among all mechanical properties, except for SS. Larix species are one of the most productive forestry species in North America 1-4 , Europe 5-12 , Japan 13-24 , and China 25,26. To date, several studies have focused on geographic variations in the physical and mechanical properties of wood in Larix species to determine effective wood utilization and conduct appropriate tree breeding programs 1,3-5,15,18,19,23,24. For example, geographic variations have been found in the physical and mechanical properties of wood in Larix kaempferi 1,4. A similar tendency was also found for another Larix species, Larix sibirica 5. In addition to geographic and/or genetic variations in the physical and mechanical properties of wood, radial variations should also be considered for effective wood utilization 11,12,23-25,27. In general, softwood can be classified as juvenile or mature wood. Juvenile wood is characterized by a greater microfibril angle, a lower basic density, and inferior mechanical properties compared to mature wood 12-15,17,23,24,26,28,29. In a study of 31-year-old L. kaempferi trees, wood density and wood mechanical properties, such as modulus of elasticity (MOE), modulus of rupture (MOR), compressive strength parallel to grain (CS), and shearing strength (SS), showed lower values in corewood (from the pith to the 15th annual ring) than in outer wood (from the 15th annual ring to the bark) 24. Therefore, based on the nature of Larix species, (1) trees of these species with superior physical and mechanical properties of wood can be selected, and (2) the properties of juvenile wood should be considered for determining effective wood utilization. In Mongolia, the total forest area is 18.3 million ha, covering 11.9% of the country 30. Of this total area, Larix sibirica covers more than 70% of the forest. Since wood produced from Larix species is mainly utilized for structural applications, sawmilling is one of the main forest activities in Mongolia. Indeed, L. sibirica is the m...

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Clonal variations and effects of juvenile wood on lumber quality in Japanese larch

Tumenjargal

Ishiguri

Iki

et al. 2020

Wood Material Science & Engineering

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Variation in selected mechanical properties of Japanese larch (Larix kaempferi, [Lamb.] Carr.) progenies/provenances trials in Eastern Canada

Cited by 12 publications

References 21 publications

Geographic variations of wood properties of <i>Larix sibirica</i> naturally grown in Mongolia

Geographic variations of wood properties of <i>Larix sibirica</i> naturally grown in Mongolia

Physical and mechanical properties of wood and their geographic variations in Larix sibirica trees naturally grown in Mongolia

Clonal variations and effects of juvenile wood on lumber quality in Japanese larch

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