Changes in the Characteristics of Pine Logging Residue during Storage in Forest Stands

Marek Wieruszewski, Jakub Kawalerczyk (), Kinga Stuper-Szablewska, Joanna Walkiewicz, Martin Lieskovský, Maciej Jarzębski and Radosław Mirski
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Marek Wieruszewski: Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-627 Poznan, Poland
Jakub Kawalerczyk: Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-627 Poznan, Poland
Kinga Stuper-Szablewska: Department of Chemistry, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-625 Poznan, Poland
Joanna Walkiewicz: Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-627 Poznan, Poland
Martin Lieskovský: Department of Forest Harvesting, Logistics and Ameliorations, Faculty of Forestry, Technical University in Zvolen, T.G. Masaryka 24, 960 01 Zvolen, Slovakia
Maciej Jarzębski: Department of Physics and Biophysics, Poznan University of Life Sciences, 60-637 Poznan, Poland
Radosław Mirski: Department of Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-627 Poznan, Poland

Energies, 2024, vol. 17, issue 4, 1-13

Abstract: A significant amount of logging residue is produced during roundwood harvesting. Logs are often left in forest sites due to, for example, ecological or logistical aspects. Taking into account the fact that the number of studies focused on changes in the properties of the residue is very low, it was decided to conduct research on the effect of a three-year storage period in forest stands on the chemical properties and energy potential of the wood. The research design allowed for the determination of changes during up to three years of storage. The performed analysis showed a highly negative impact on the characteristics of the material. These adverse effects were probably caused by the activity of microorganisms such as fungi and bacteria, as evidenced by the increased concentrations of ergosterol and low-molecular-weight organic acids. Moreover, it was found that wood stored for three years was characterized by a lower cellulose content; an increased percentage of lignin; a reduced content of sterols (desmosterol, stigmasterol, lanosterol and ?-sitosterol) and phenolic acids; and reduced antioxidant activity, as determined with the ABTS + method. Storing logs also led to a reduction in the energy potential of the residues, as shown by a reduction in net and gross calorific value and an increased ash content.

Keywords: logging residues; biodeterioration; storage; chemical composition; calorific value (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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