B.F. Bachelor of Forestry Silviculture 2

Question 1

What is the main objective of 'thinning' in silviculture?

Accepted Answer

To reduce stand density and concentrate growth on the best remaining trees

Answer

To remove all small trees to reduce competition with shrubs

Answer

To clearcut a portion of the stand for revenue

Answer

To introduce new species into a monoculture

Question 2

Which silvicultural term describes the removal of undesirable vegetation to reduce competition with planted or natural seedlings?

Accepted Answer

Release cutting

Answer

Improvement cutting

Answer

Seed-tree cut

Answer

Regeneration harvest

Question 3

The seed-tree silvicultural method retains a small number of trees after harvest primarily to:

Accepted Answer

Serve as a seed source for natural regeneration

Answer

Provide shade for new seedlings

Answer

Protect soil from erosion indefinitely

Answer

Supply habitat for old-growth dependent species

Question 4

What is 'stocking' as a silvicultural concept?

Accepted Answer

The number or basal area of trees per unit area relative to a desired level

Answer

The process of planting seedlings in a nursery

Answer

The total volume of timber harvested per acre

Answer

The proportion of shade-tolerant versus intolerant species

Question 5

Which of the following tree species is considered highly shade-intolerant?

Accepted Answer

Lodgepole pine (Pinus contorta)

Answer

Sugar maple (Acer saccharum)

Answer

Eastern hemlock (Tsuga canadensis)

Answer

American beech (Fagus grandifolia)

Question 6

What is 'rotation age' in silviculture?

Accepted Answer

The planned age or size at which a stand is considered ready for final harvest

Answer

The age at which a species loses its ability to reproduce

Answer

The number of years between prescribed burns

Answer

The time required to complete a single thinning cycle