Moderate
The principal disadvantages of the selection system are:
Correct answer: E. All of the above
- A. The quality of the timber may be inferior to that grown in even-aged crops
- B. The whole are being always under regeneration
- C. The light conditions provided by the irregular crop of mixed ages may result in the young growth having a poor chance to develop, except with shadebearing species
- D. The fellings are scattered over comparatively large areas
- E. All of the above
Explanation
Selection forestry can produce poorer timber quality, keeps regeneration processes active across the forest, creates difficult and uneven light conditions, and requires scattered fellings. Since all four statements describe recognized disadvantages, the combined option is correct.
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