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SP-10-22 mechanized harvesting of tree length

Trees are felled and delimbed with a harvester, but trees are not crosscut (generally with the intention of postponing bucking at a better facility in order to maximize value recovery)

Functiogram:



Advantages
  • Safer compared with motor-manual operations
  • Faster compared with mechanized harvesting of short logs in clearcuts
  • Possibility to work on ghost trails and increase distance between skid trails (where ghost trails are allowed)
Limitations, thresholds
  • Tree-lengths are less maneuverable than short logs
  • Higher potential for residual stand damage, esp. during subsequent extraction
Main use
  • Plantation forestry, often associated with the use of centralized processing yards

Economic suitability:

example:

  • machine costs without personal costs: 160,00 Euro/h
  • personal costs per person: 35,00 Euro/h
  • number of persons: 1
  • in total: 195,00 Euro/h
  • regression line minutes per tree
    • b0 = 1,0
    • b1 (tree volume) = 1,0 


Ecological suitability:

Ecograms 




Social suitability:

  • S-class: no contact with forest road -> S5
  • E-class: advanced machine work -> E4


» Technodiversity Glossary

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