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Difficulty: MediumLumbering and Forestry in Africa

Commercial timber exploitation in African tropical rainforests follows a systematic operational procedure from resource identification to final shipment. In what chronological order do these key stages of timber extraction take place?

  1. 1Cruising the forest concession block to locate, identify, and mark mature commercial hardwood trees.
  2. 2Felling the marked trees with chainsaws and stripping off the upper crown and large branches.
  3. 3Skidding the heavy logs through temporary forest tracks to a central log landing or loading depot.
  4. 4Transporting the logs via river rafts or specialized trucks to coastal sawmills and export ports.

Answer

The correct chronological order is: 1. Cruising the forest concession block to locate, identify, and mark mature commercial hardwood trees; 2. Felling the marked trees with chainsaws and stripping off the upper crown and branches; 3. Skidding the heavy logs through temporary forest tracks to a central log landing; 4. Transporting the logs via river rafts or specialized trucks to coastal sawmills and export ports.
Commercial lumbering in African tropical rainforests begins with forest cruising to mark mature commercial trees. After marking, timber workers fell the trees and remove the crown. Tractors then skid the heavy trunks to a central forest landing, where they are loaded for final transport down river channels or roads to sawmills and seaports.

Step-by-Step Solution

1
Identify the initial pre-harvesting phase
Cruising and tree selection/marking comes first.
Commercial logging operators survey forest concessions to select specific mature hardwood species before any clearing or cutting begins.
2
Determine the harvesting action
Felling and de-limbing follows tree marking.
Trees are felled at the buttress level and stripped of branches to convert trunks into timber logs.
3
Identify short-distance haulage within the concession
Skidding logs to a central forest landing follows felling.
Individual logs scattered across the dense forest floor must be collected at a central depot using tractors.
4
Identify long-distance transport to processing or export sites
Long-distance transport via river floating or heavy trucks comes last.
Consolidated logs at the forest landing are loaded onto river rafts or logging trucks for delivery to coastal mills or ports.

Key Concept

Sequential stages of commercial hardwood extraction and transport in African tropical forests
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Topics

Lumbering and Forestry in Africa

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