Effect of thinning and natural variation in bole roundness in Scots pine (Pinus sylvestris L.)

Mäkinen, Harri

doi:10.1016/s0378-1127(97)00335-6

Cited by 14 publications

(10 citation statements)

References 17 publications

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“…Indeed for all the species, out-ofroundness and pith-off-centre at stump height were greater than those at breast height (Table 3). These results are in agreement with the findings of other studies which reported that the pith eccentricity was greatest at stump height and diminished on moving up the stem (Mäkinen 1998;Kang, Lee 2004).…”

Section: Out-of-roundness In Stems Of Speciessupporting

confidence: 93%

“…Deviation from the circular shape of stem may cause a loss of raw material in industry and errors in calculating stem volumes and information about changes in wood quality and properties. Therefore, understanding and assessing this variation in bole roundness and eccentricity are of economic interest (Mäkinen 1998). Pith is a small central core of the primary parenchyma tissue formed by the apical meristem at the growing tip (Moya et al 2008).…”

mentioning

confidence: 99%

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Investigating the out-of-roundness and pith-off-centre in stems of three broadleaved species in Hyrcanian forests

Fallah¹,

Riahifar²,

Barari³

et al. 2012

J. For. Sci.

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ABSTRACT:The out-of-roundness and pith-off-centre of Alnus subcordata, Acer velutinum and Quercus castaneifolia growing in Hyrcanian forests of Iran were investigated. Stem disks were cut from the breast height and stump height of felled trees in diameter classes of 20 cm to 90 cm. Results indicated that the pith eccentricity for Acer velutinum was significantly greater than that of Alnus subcordata and Quercus castaneifolia (P < 0.01). The pith-off-centre significantly increased with increasing stem diameter from 20 cm to 50 cm, while no significant difference were observed for pith-off-centre index from diameter class of 55 cm to 90 cm. The out-of-roundness in stems of Acer velutinum and Alnus subcordata was significantly greater than that of Quercus castaneifolia (P < 0.01). Moreover, out-of-roundness significantly decreased with increasing stem diameters from 20 cm to 45 cm except for 35 cm. There were no significant differences among diameter classes from 60 cm to 85 cm with respect to out-of-roundness. For all the species, the out-of-roundness and pith-off-centre at stump height were greater than those at breast height.

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Section: Out-of-roundness In Stems Of Speciessupporting

confidence: 93%

mentioning

confidence: 99%

Investigating the out-of-roundness and pith-off-centre in stems of three broadleaved species in Hyrcanian forests

Fallah¹,

Riahifar²,

Barari³

et al. 2012

J. For. Sci.

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show abstract

“…In the past little dendrochronological research was done on relations between the development of eccentricity, the development of reaction wood and the presence of stresses and deformations of tree trunks (Schweingruber, 1996). Single analyses of coniferous species were made for the needs of forestry (Mäkinen, 1998;Stokes and Berthier, 2000), anatomical studies, climatology (Schweingruber, 1996) and within studies on the adaptation of trees to environmental conditions -e.g. wind (Wade and Wendel-Hewson, 1979).…”

Section: Eccentricity Of Tree Rings -A Tool For Spatial and Temporal mentioning

confidence: 99%

Dendrochronological methods for reconstructing mass movements — An example of landslide activity analysis using tree-ring eccentricity

Malik

Wistuba

2012

Geochronometria

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Dendrochronological methods can be applied to the reconstruction of different types of environmental events such as climate changes, fires, glacier movements, floods, earthquakes, volcano activity. In the field of geomorphology dendrochronology is increasingly frequently used for the absolute dating of different types of mass-movements (rock falls, landslides and debris flows, etc.). Trees growing on slopes transformed by mass-movements are tilted and wounded while their stems and root systems are exposed or buried under sediment. These events are recorded in wood anatomy as eccentric growth, reaction wood, scar overgrowth by callous tissue, changes in cell size or adventitious root production. Dating changes in wood anatomy allows to date and precisely reconstruct the spatial and temporal occurrence of mass-movements with at least one year resolution. The paper provides a review of existing dendrochronological tools used in geomorphology and also an example of the application of eccentric tree-growth to reconstruct landsliding. Using tree-ring eccentricity allows to (1) obtain a dynamic depiction of slopes, (2) study landslide activity, not only contemporary, but also in the last tens of hundreds of years (depending on the stand age).

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“…Number, length, diameter and angle of branches increased in widely spaced and intercropped treatments. Roundness is also considered as an important and influential parameter of yield in veneer and plywood industries (Mäkinen, 1998). Stand density and thinning accounted for 2 -9% of roundness (Mäkinen, 1998).…”

Section: Fig 6 Schematic Diagram Of the Effects Of Initial Spacing mentioning

confidence: 99%

The Effects of Tree-Alfalfa Intercropped Systems on Wood Quality in Temperate Regions

Taghiyari¹,

Sisi²

2012

Agroforestry for Biodiversity and Ecosystem Services - Science and Practice

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Effect of thinning and natural variation in bole roundness in Scots pine (Pinus sylvestris L.)

Cited by 14 publications

References 17 publications

Investigating the out-of-roundness and pith-off-centre in stems of three broadleaved species in Hyrcanian forests

Investigating the out-of-roundness and pith-off-centre in stems of three broadleaved species in Hyrcanian forests

Dendrochronological methods for reconstructing mass movements — An example of landslide activity analysis using tree-ring eccentricity

The Effects of Tree-Alfalfa Intercropped Systems on Wood Quality in Temperate Regions

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