Wood waste during full‐length and cut‐to‐length harvesting systems in caspian forests

Behjou, Farshad Keivan; Ramezani, Mahdi; Esfahan, Ehsan Zandi; Eftekhari, Alireza

doi:10.21833/ijaas.2016.08.009

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…The logging waste is lower than the research results in the sub-regions of East Kalimantan and Central Kalimantan, which ranged from 17-18% (Soenarno et al, 2016;Soenarno et al, 2021) and in East Luwu Regency of 5.75 m 3 /ha (Dalya et al 2021). The amount of waste is much smaller than the research in the Caspian hardwood forests of Pakistan at 15.6% (Behjou et al 2016) and North Kalimantan at 11.06 m 3 /ha (Muhdi et al, 2016). The waste differences are caused by differences in how waste is measured.…”

Section: Skidding and Grading Scaling Wastementioning

confidence: 87%

Potency, Type, and Quality of Wood Waste Harvesting Timber of Lowland Natural Forest in Two Forest Concessions in South Papua

Soenarno¹,

Yuniawati²,

Dulsalam³

et al. 2023

J. Ecol. Eng.

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Papua Province has a natural production forest reaching 13.541 million ha, with log production achieving an average of 8.78% of the total national log production of 5.835 million m 3 /year. The logs were obtained from selective logging activities using reduced-impact logging techniques. This paper aimed to determine the potency, type, and quality of wood harvesting waste in the two forest concessions lowland natural forests in the province of Papua. The average potential of wood harvesting waste is 4.012 m 3 /ha or 16.25%. This figure comprises felling waste, which amounts to 2.529 m 3 /ha or 10.24%, and waste due to skidding and grading scaling, which amounts to 1.483 m 3 /ha or 6.01%. The types of logging waste consist of stump, end, and base waste with an average volume of 1.014 m 3 /ha (40.88%), 0.825 m 3 /ha (30.72%), and 0.690 m 3 /ha (28.40%), respectively. The quality of logging waste is dominated by defects, with an average of 2.733 m 3 /ha (69.10%). The waste broken due to the harvesting process averages 0.756 m 3 /ha (18.84%), while that of good quality averages 0.484 m 3 /ha (12.07%). The following measures should be taken to mitigate logging waste; (a) company management needs to train on reduced impact logging techniques for both chainsaw and tractor operators, (b) the piece rate system has to be reviewed, and (c) the monitoring function of logging activities in the field has to be improved.

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Section: Skidding and Grading Scaling Wastementioning

confidence: 87%

Potency, Type, and Quality of Wood Waste Harvesting Timber of Lowland Natural Forest in Two Forest Concessions in South Papua

Soenarno¹,

Yuniawati²,

Dulsalam³

et al. 2023

J. Ecol. Eng.

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Potential of Wood Harvesting Residues and Residual Stand Damage due to Timber Harvesting: A Case Study at PT Austral Byna in Central Kalimantan, Indonesia

Suhartana

Yuniawati

Gandaseca

et al. 2022

International Journal of Forestry Research

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The practice of timber harvesting in natural forests which has been conducted up to now still leaves wood harvesting residue and residual stand damage. Most condition of wood harvesting residue is still good and can be utilized. The objective of this research was to determine the potency of wood harvesting residue and residual stand damage on timber harvesting in natural forests. The data on wood utilization, wood harvesting residue, and residual damage were collected from three sample plots. The sample plots were arranged in a systematic and purposive manner, and the data were processed with tabulation and average analysis. Research results showed that the average volume of wood being utilized was 9.212 m3 tree−1. The average volume of wood harvesting residues was 2.310 m3 tree−1, and the total average volume of wood harvesting residues which were good, defected, and broken was 2.121 m3 (80.952%), with an average volume for good wood harvesting residue condition of 1.038 m3 (34.808%). Proportions of wood harvesting residues were 2.154 m3 (94.444%) consisting of buttress as large as 0.102 m3 (5.159%), stumps as large as 0.375 m3 tree−1 (23.597%), butt as large as 0.855 m3 (35.930%), and end part as large as 0.821 m3 (29.758%). The average number of trees with a diameter of 20 cm which were damaged due to felling and skidding was 5 trees ha−1 (5.40%) and 6 trees ha−1 (6.58%), respectively.

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Timber Losses during Harvesting in Managed Shorea robusta Forests of Nepal

Aryal

Neupane

Rijal³

et al. 2022

Land

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Logging and sawing of timber using conventional tools by unskilled workers causes enormous damage to the valuable timber, residual stand, regeneration, and forest soil in Nepal. The purpose of this study was to find out the volume reduction factor and identify major strategies to reduce timber losses in the tree harvesting process in the Terai Shorea robusta forest of Nepal. Field measurements and product flow analysis of 51 felled trees from felling coupes and randomly selected 167 sawed logs were examined to study harvesting losses. Responses from 116 forest experts were analyzed to explore strategies for reducing harvesting and processing losses. The results showed that timber losses in the felling and bucking stage with and without stem rot were 23% and 22%, respectively. Similarly, timber losses in the sawing stage with and without stem rot were 31% and 30%, respectively. Paired t-test at 5% level of significance revealed that there was significant loss in both tree felling and log sawing stages with present harvesting practice. The most leading factor contributing to timber loss in all of the three stages was the use of inappropriate equipment during tree harvesting. Use of synthetic ropes for directional felling and skidding as well as flexible and portable sawing machine with size adjustment options during sawing were mainly recommended as strategies to reduce timber losses. This study serves as a baseline study to identify and quantify timber losses in different stages of tree conversion and also formulate their reduction strategies in Nepal.

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Wood waste during full‐length and cut‐to‐length harvesting systems in caspian forests

Cited by 3 publications

References 10 publications

Potency, Type, and Quality of Wood Waste Harvesting Timber of Lowland Natural Forest in Two Forest Concessions in South Papua

Potency, Type, and Quality of Wood Waste Harvesting Timber of Lowland Natural Forest in Two Forest Concessions in South Papua

Potential of Wood Harvesting Residues and Residual Stand Damage due to Timber Harvesting: A Case Study at PT Austral Byna in Central Kalimantan, Indonesia

Timber Losses during Harvesting in Managed Shorea robusta Forests of Nepal

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