Effects of intermediate silvicultural treatments on the distribution of within-stand growth

Moore, James A.; Zhang, Lianjun; Newberry, James D.

doi:10.1139/x94-053

Cited by 30 publications

(18 citation statements)

References 7 publications

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“…This is in accordance with the results of Pukkala et al (1998), that co-dominant and medium-sized Scots pine trees had the highest relative response to thinning. The result is also supported by the findings of Moore et al (1994) in Douglas fir, that large trees are relatively less affected by thinning than smaller trees. In contrast, Jonsson (1974) and Hynynen (1995) found that the relative thinning response within a Scots pine stand was the same irrespective of tree size.…”

Section: Discussionsupporting

confidence: 78%

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Thinning intensity and long-term changes in increment and stem form of Norway spruce trees

Mäkinen

Isomäki

2004

Forest Ecology and Management

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Section: Discussionsupporting

confidence: 78%

“…Moore et al, 1994;Eriksson and Karlsson, 1997). The reason for the effect is obvious because smaller trees were removed in the thinnings, i.e.…”

Section: Discussionmentioning

confidence: 99%

Thinning intensity and long-term changes in increment and stem form of Norway spruce trees

Mäkinen

Isomäki

2004

Forest Ecology and Management

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“…These results are consistent with our hypothesis and again consistent with previous findings that reported that small and medium-size trees have the highest relative response to thinning [56,57,59,60]. However, smaller trees have also been shown to be sometimes less reactive than larger stems [7,58,61].…”

Section: Tree Growthsupporting

confidence: 93%

Response of Boreal Jack Pine (Pinus banksiana Lamb.) Stands to a Gradient of Commercial Thinning Intensities, with and without N Fertilization

Moulinier

Brais

Harvey

et al. 2015

Forests

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This study examines tree and stand response to a gradient of commercial thinning intensities and nitrogen fertilization (200 kg N ha−1) in nine jack pine (Pinus banksiana) stands of Eastern Canada over a period of 14 years. Thinning intensity ranged from 0% basal area removal in control plots to 64% in thinned plots. Tree diameter increment, absolute and relative volume increment and mean volume increased with thinning intensity and were higher in fertilized plots. Individual tree response depended on tree diameter, with smallest trees exhibiting highest relative volume increment to thinning intensity. Stand basal area increment was positively associated to initial stand basal area and negatively to stand age. In thinned and fertilized plots, stand volume increment was higher and natural mortality lower than in fertilized only and unfertilized control plots over the 5–14 year period after thinning. However, the positive effect of fertilization on tree volume increment decreased with thinning intensity. Despite positive individual tree growth responses to thinning and fertilization, residual stand volume increment decreased with increased thinning intensity in both fertilized and unfertilized plots. While total cumulative stand volume (harvested + residual) also decreased with thinning intensity in unfertilized plots, comparable total volumes were observed in fertilized + thinned and unthinned control plots. Nitrogen fertilization in the years following commercial thinning enhanced the benefit of thinning on these relatively poor sites by increasing tree diameter growth, lowering mortality, and increasing total stand merchantable volume compared to unfertilized thinned stands.

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“…Nyyssönen (1954), Niemistö (1994) and Pukkala et al (1998) have argued earlier that both absolute and relative thinning responses in Scots pines (Pinus sylvestris), for example, are at their maximum among co-dominant and intermediate trees. In contrast, Jonsson (1974), Moore et al (1994), Hynynen (1995) and Pape (1999) have suggested the same relative thinning response irrespective of tree size, especially among trees that were dominant at the time of thinning.…”

Section: Introductionmentioning

confidence: 98%

Effect of early thinning on the diameter growth distribution along the stem of Scots pine

Peltola¹,

Miina²,

Rouvinen³

et al. 2002

Silva Fenn.

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The absolute and relative effects of the fi rst thinning on the diameter growth distribution along the stems were studied in 98 Scots pines (Pinus sylvestris L.) at heights of 1.3, 4, 6 and 8 m. The data cover one 3-year pre-thinning period and four 3-year post-thinning periods in plots with densities varying from 575 to 3400 stems ha -1 . A shift in the point of maximum diameter growth down the bole was found during the fi rst 3 years after thinning, with a shift back up the stem later. The thinning response over the whole 12-year post-thinning period was strongest the nearer the stem base and the heavier the thinning. The largest trees had the highest diameter growth after thinning in absolute terms, and the growth was greater the heavier the thinning. The absolute thinning response over the 12-year post-thinning period was highest in the medium tree size and in the largest trees, especially on the heavily thinned and lightly thinned plots. Whereas in the moderately thinned stand the smaller and larger trees responded more than did those of medium size on average. In relative sense, however, the small trees on heavily or moderately thinned plots responded more rapidly and more strongly than the medium-sized or large trees over the whole stem. The small trees on the lightly thinned plots responded only slightly to thinning. The results suggest that it is possible to affect the uniformity of wood properties (such as ring width) both within and between trees by thinning.

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Effects of intermediate silvicultural treatments on the distribution of within-stand growth

Cited by 30 publications

References 7 publications

Thinning intensity and long-term changes in increment and stem form of Norway spruce trees

Thinning intensity and long-term changes in increment and stem form of Norway spruce trees

Response of Boreal Jack Pine (Pinus banksiana Lamb.) Stands to a Gradient of Commercial Thinning Intensities, with and without N Fertilization

Effect of early thinning on the diameter growth distribution along the stem of Scots pine

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