Effect of selective cutting type on the chainsaw productivity in Caspian Forests

Behjou, Farshad Keivan

doi:10.1007/s11676-012-0312-y

Cited by 2 publications

(2 citation statements)

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“…Previous research aimed at studying productivity costs of chainsaw logging has confirmed the influence of DBH on the cutting and total felling time. Some of these studies were conducted in forests of Arkansas (Lortz et al, 1997), the Appalachian Mountain, USA (Wang et al, 2004), the Caspian Forests, Iran (Behjou, 2012;Jourgholami et al, 2013), and the state of Mato Grosso, Brazil (Acosta et al, 2018). However, comparing the time involved in directional felling operations is difficult given the differences in the execution methodologies (Câmpu & Ciubotaru, 2017).…”

Section: Resultsmentioning

confidence: 99%

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Factors Influencing Directional Tree Felling in the Tapajós National Forest, Amazon, Brazil

Silva¹,

Ruschel²,

Reis³

2022

JAS

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Given its complexity, directional felling is considered one of the most dangerous activities in the exploratory phase of forest management projects for timber obtention. Therefore, detailed studies of the variables influencing its execution are necessary. The present research was conducted in the Tapajós National Forest, Brazilian Amazon, and analyzed 1,075 trees logged using the directional felling technique in a 504.30 ha area. To better understand directional felling, the studied variables were subjected to descriptive analyses and principal component analysis, a multivariate procedure that enables the simultaneous evaluation of several variables. While the diameter, basal area, and stem and branch volume explained most of the variability concerning directional felling, the commercial height influenced the least. Trees of the species Hymenolobium petraeum (angelim pedra) strongly correlated with the dendrometric variables diameter and stem and branch volume. Those of the species Hymenaea courbaril (jatobá) showed a strong correlation with the commercial height. Pseudopiptadenia psilostachya (fava timborana), Dipteryx odorata (cumaru), Hymenaea parvifolia (jutai mirim), and Astronium lecointei (muiracatiara) had a strong correlation with the basic wood density. Trees of the species Couratari guianensis (tauari), Lecythis pisonis (sapucaia), Astronium lecointei (muiracatiara), Mezilaurus itauba (itaúba), and Goupia glabra (cupiúba) showed lower correlations with the time needed for planning, cutting, and felling. They also had a reduced correlation with the angular differences between the natural and effective and the intended and effective felling directions. The latter results suggest that these species do not follow a defined pattern concerning the directional felling technique. However, trees of the other species followed a different tendency. In general, the logged trees lacked correlation with the directional felling cutting and total operation time. The analyses suggest that as the diameter of a tree increases, the chances of completing its directional felling decrease.

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Section: Resultsmentioning

confidence: 99%

“…Studies conducted in native forests have also focused on analyzing equipment performance and the economic aspects involved in the felling process (Minetti et al, 2000;Behjou, 2012;Behjou et al, 2009) or considering the ergonomic elements of chainsaw use during directional felling (Rêgo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Factors Influencing Directional Tree Felling in the Tapajós National Forest, Amazon, Brazil

Silva¹,

Ruschel²,

Reis³

2022

JAS

View full text Add to dashboard Cite

show abstract

Productivity and Costs of Felling Operation for Three Harvesting Methods in Mixed Forest Stands

Cha¹

2016

J. Korean For. Soc

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Effect of selective cutting type on the chainsaw productivity in Caspian Forests

Cited by 2 publications

References 10 publications

Factors Influencing Directional Tree Felling in the Tapajós National Forest, Amazon, Brazil

Factors Influencing Directional Tree Felling in the Tapajós National Forest, Amazon, Brazil

Productivity and Costs of Felling Operation for Three Harvesting Methods in Mixed Forest Stands

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