Journal article
The effect of mechanization level and harvesting system on the thinning cost of Mediterranean softwood plantations
Silva Fennica, Vol.48(1), 1003
2014
Abstract
The study compared motor-manual cut-to-length (CTL) harvesting, motor-manual whole-tree (WT) harvesting, mechanized CTL harvesting and mechanized WT harvesting as applied to the production of energy chips from the second thinning of Mediterranean pine plantations in flat terrain. Mechanization increased productivity between 6 and 20 times, depending on process step. It also allowed reducing thinning cost by a factor 4. Shifting from CTL to WT harvesting resulted in a reduction of harvesting cost between 40 and 50%. Fuel consumption was between 40 and 100% higher for CTL harvesting than for WT harvesting. Mechanization entailed a reduction of fuel consumption between 10 and 40%. Stand damage was generally low, between 1.5 and 6%. Mechanized CTL harvesting resulted in the lowest incidence of wounding, and the difference between mechanized CTL and manual WT harvesting was statistically significant. Soil compaction was absent or very small, depending on treatment. Mechanized thinning may produce larger increases of soil bulk density, compared to motor-manual thinning, but the difference is small, although significant. CTL harvesting leaves a larger amount of biomass on the soil, which relieves possible concerns about soil nutrient depletion. On the other hand, heavy residue loads may increase fire risk especially in sensitive Mediterranean environments.
Details
- Title
- The effect of mechanization level and harvesting system on the thinning cost of Mediterranean softwood plantations
- Authors
- Raffaele Spinelli (Author) - CNR IVALSA, ItalyCarolina Lombardini (Author) - CNR IVALSA, ItalyNatascia Magagnotti (Author) - CNR IVALSA, Italy
- Publication details
- Silva Fennica, Vol.48(1), 1003; 15
- Publisher
- Suomen Metsatieteellinen Seura
- Date published
- 2014
- DOI
- 10.14214/sf.1003
- ISSN
- 0037-5330
- Copyright note
- Copyright © 2014 Finnish Society of Forest Science. Reproduced here in accordance with the publishers copyright policy.
- Organisation Unit
- University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
- Language
- English
- Record Identifier
- 99449055502621
- Output Type
- Journal article
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