Technodiversity Glossary

Full trees that are laid down alongside the trail are chipped by a self-propelled chipper or a tractor powered chipper with terrain capability. Chips are blown into an integral bin and then transferred to a chip shuttle (forwarder-based) or into a bin trailer, towed by the same tractor or by an accompanying tractor.

Functiogram

• Trees are compacted into chips as early as possible to accrue all advantages of bulk density reduction and "fluidization"
• Minimum tree handling
• Minimum contamination

• Needs suitable terrain conditions
• Expansive machinery
• Potential for interaction delays in the chipper-shuttle interface
• Temptation to use the integral bin as a chip-forwarder (only on a very short distances)

• Danish forestry – thinning there is very effective

Economic suitability

Example:

• machine costs without personal costs: 120,00 Euro/h
• personal costs per person: 35,00 Euro/h
• number of persons: 2
• in total: 190,00 Euro/h
• regression line minutes per tree
  • b₀ = 0,2
  • b₁ (tree volume) = 2,0
  • b₂ (skidding distance) = 0,03

Ecological suitability

Ecograms

Social suitability:

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

Check Waterford studies