B.F. Bachelor of Forestry Bachelor of Forestry Forest Mensuration 3

Question 1

The 'growing stock' of a forest refers to:

Accepted Answer

The total volume of live trees in a defined area

Answer

The annual growth increment only

Answer

The number of seedlings planted per year

Answer

The amount of timber harvested annually

Question 2

When using a Bitterlich angle gauge (wedge prism) with a basal area factor (BAF) of 10, each 'in' tree represents how many square feet of basal area per acre?

Accepted Answer

10 sq ft/acre

Answer

5 sq ft/acre

Answer

20 sq ft/acre

Answer

1 sq ft/acre

Question 3

What is the primary difference between 'net volume' and 'gross volume' of a log?

Accepted Answer

Gross volume is total wood including defects; net volume excludes defects

Answer

Net volume includes bark; gross volume does not

Answer

Net volume is measured in board feet; gross volume in cubic feet

Answer

They are equivalent terms for the same measurement

Question 4

An increment core extracted from a tree is used to determine:

Accepted Answer

The tree's age and radial growth rate

Answer

The tree's moisture content

Answer

The tree's root volume

Answer

The tree's crown ratio

Question 5

Which of the following best describes 'stand density index' (SDI)?

Accepted Answer

A measure of stocking based on number of trees and their average diameter

Answer

The ratio of crown area to stand area

Answer

The total basal area divided by number of plots

Answer

The annual volume increment per unit area

Question 6

The 'Doyle log rule' tends to underestimate volume for logs with a small end diameter of less than:

Accepted Answer

16 inches

Answer

6 inches

Answer

10 inches

Answer

28 inches

Question 7

In forest inventory, a 'two-stage sampling' design involves:

Accepted Answer

First selecting primary sampling units (PSUs), then selecting secondary units within each PSU

Answer

Sampling trees in two seasons — spring and fall

Answer

Measuring trees twice for accuracy verification

Answer

Using two different plot sizes simultaneously