B.F. Bachelor of Forestry Bachelor of Forestry Forest Mensuration 2

Question 1

Which formula is used to calculate the volume of a tree using the Smalian's method?

Accepted Answer

V = L × (Ab + At) / 2

Answer

V = L × (Ab + 4Am + At) / 6

Answer

V = L × Ab

Answer

V = L × At / 3

Question 2

The Prismatic compass is primarily used in forest mensuration for:

Accepted Answer

Running compass traverses and measuring bearing angles

Answer

Measuring tree height

Answer

Measuring horizontal distances

Answer

Estimating crown density

Question 3

What does 'form quotient' represent in tree measurement?

Accepted Answer

Ratio of diameter at mid-height to DBH

Answer

Ratio of crown width to tree height

Answer

Ratio of merchantable height to total height

Answer

Ratio of volume to basal area

Question 4

A timber cruise using systematic sampling with a fixed-area plot requires the cruiser to:

Accepted Answer

Measure trees within randomly located circular or rectangular plots

Answer

Measure every tree in the forest

Answer

Use a relascope to tally trees by species only

Answer

Count stumps rather than live trees

Question 5

The ocular estimate of crown closure in a stand is typically expressed as:

Accepted Answer

Percentage of ground covered by tree crowns

Answer

Cubic feet per acre

Answer

Number of trees per hectare

Answer

Basal area per hectare

Question 6

In log scaling, what is the purpose of deducting for defects?

Accepted Answer

To adjust volume estimates to reflect only sound, usable wood

Answer

To account for the weight of bark

Answer

To add a safety factor for transportation

Answer

To convert log volumes to board feet automatically

Question 7

Which instrument measures tree height using the principle of trigonometry based on horizontal distance and vertical angles?

Accepted Answer

Hypsometer

Answer

Biltmore stick

Answer

Diameter tape

Answer

Increment borer