Technodiversity Glossary

Cutting tree at the base with chainsaw and fell it in a predefined pattern.

Functiogram:

Advantages

• no need to relocate machines
  
• low investment
  
• accessibility to almost all terrain condition
  
• no need for strip roads (unless needed by extraction vehicles)
  
• no tree size limitation
  
• higher productivity than manual work
  

 Limitations, thresholds

• safety: motor-manual felling is very dangerous
  
• requires high skills
  
• tiresome, high strains
  

Main use

• thinning operations (pure selection)
  
• steep terrain
  
• broadleaf trees with higher dimensions
• wherever machine access is limited

• machine costs without personal costs: 4.00 Euro/h
• personal costs per person: 35.00 Euro/h
• number of persons involved: 1
• in total: 39.00 Euro/h
• regression formula: 
  • b_o = 8
  • b₁ = 15

Ecological suitability:

• Felling damage can occur when the forest stand is dense; depends on the education and skill of the forest worker
• Ecogram 

Social suitability:

• S-class: no work on forest roads -> S5
• E-class: motor-manual work, very heavy and dangerous -> E2

Anonymous (2007): Scope of best operation practice (bop). (unveröffentlicht). Hg. v. Forestry Solutions.

Engler, Benjamin (2011): Gestaltung von Arbeitsprozessen bei der Bewirtschaftung von Eukalyptusplantagen in Süd-China. Analyse gegenwärtiger Arbeitsverfahren und Modellierung eines höheren Mechanisierungsgrades in der Holzernte zur Beurteilung der ökonomischen Auswirkungen. Dissertation. Albert-Ludwigs-Universität Freiburg, Freiburg.