B.S.F. or B.Sc.F. Bachelor of Science in Forestry Silviculture and Forest Stand Management 2 — Questions and Answers
Question 1: Which planting pattern maximizes uniform spacing and simplifies machine cultivation in plantation forestry?
- Random scatter planting
- Square planting pattern (Correct answer)
- Quincunx planting pattern
- Contour planting
Correct answer: Square planting pattern
Square planting provides equal spacing in rows and columns, making mechanized operations straightforward.
Question 2: The selection silvicultural system creates what type of forest age structure?
- Even-aged
- Two-aged
- Uneven-aged (Correct answer)
- Monoculture
Correct answer: Uneven-aged
The selection system removes individual or small groups of trees continuously, maintaining trees of all ages and sizes across the stand.
Question 3: What is 'site index' used for in silviculture?
- Measuring timber volume
- Assessing soil pH
- Indicating forest productivity based on dominant tree height at a reference age (Correct answer)
- Calculating basal area
Correct answer: Indicating forest productivity based on dominant tree height at a reference age
Site index expresses the height of dominant and co-dominant trees at a reference age (commonly 25 or 50 years) as a measure of site quality.
Question 4: Prescribed burning in silviculture is primarily used to:
- Kill all competing vegetation permanently
- Reduce fuel loads, control competition, and prepare seedbeds (Correct answer)
- Increase soil compaction
- Harvest merchantable timber
Correct answer: Reduce fuel loads, control competition, and prepare seedbeds
Prescribed fire manages fuels, controls competing vegetation, and can prepare mineral seedbeds to aid natural regeneration.
Question 5: Which term describes the tree layer that provides most of the photosynthetic canopy in a forest stand?
- Understory
- Overstory (Correct answer)
- Duff layer
- Shrub layer
Correct answer: Overstory
The overstory (main canopy) layer captures the majority of incoming light and drives stand-level productivity.
Question 6: In silviculture, 'crop trees' are best defined as:
- Any trees harvested in a clearcut
- Selected trees managed for long-term timber or ecological value (Correct answer)
- Trees planted as nurse crops to shade out weeds
- Invasive tree species removed during thinning
Correct answer: Selected trees managed for long-term timber or ecological value
Crop trees are individually selected, high-quality trees that are the primary focus of stand management treatments.
B.S.F. or B.Sc.F. Bachelor of Science in Forestry Silviculture and Forest Stand Management 2
Which planting pattern maximizes uniform spacing and simplifies machine cultivation in plantation forestry?