Which of the following environmental factors presents the primary physical obstacle to commercial timber exploitation in the tropical rainforests of Central Africa?
- The high degree of forest heterogeneity, where commercial species grow widely scattered among non-economic treesAnswer
- BThe predominance of coniferous softwoods like pine and spruce which deteriorate rapidly in warm, humid climates
- CThe total absence of indigenous tropical hardwood species capable of producing merchantable timber
- DThe natural dominance of lightweight softwood species that float too easily and overcrowd transport rivers
Answer
The high degree of forest heterogeneity, where commercial species grow widely scattered among non-economic trees
In African equatorial forests, tree species heterogeneity is extremely high. Commercial timber trees such as Mahogany, Sapele, and Obeche do not grow in pure single-species stands, but are instead scattered thinly across dense, mixed forest belts. This spatial dispersion requires timber extractors to cut extensive haulage paths to reach individual trees, forming the main physical hurdle to large-scale commercial lumbering.
Step-by-Step Solution
Key Concept
Challenges of commercial lumbering in African tropical rainforests