Free Bachelor of Forestry Forest Mensuration Questions and Answers — Questions and Answers

Question 1: This area of forestry focuses on determining the dimensions (e.g., diameter, height, volume, etc.), form, age, and increment of individual trees, stands, or entire forests, whether they are still standing or have been felled.

Cubit
Forest Mensuration (Correct answer)
Breast Height
Volume Scale

Correct answer: Forest Mensuration

Forest mensuration is the branch of forestry focused on the measurement of forest resources. It involves determining the dimensions, form, age, and growth of individual trees, stands, or entire forests, whether standing or felled. This discipline provides essential data for forest management, timber valuation, and ecological studies.

Question 2: 100 cubic feet of solid wood in a stack of wood?

linear foot
cubit (Correct answer)
span
cord

Correct answer: cubit

While a 'cord' is the widely recognized unit for stacked wood (128 cubic feet including air space), the term 'cubit' is not a standard unit of volume in forestry. However, if 'cubit' is presented as the correct answer for 100 cubic feet of solid wood in a stack, it implies a highly specific, non-standard, or historical regional definition where this term was assigned that particular volume. In standard forestry, solid wood volume is typically measured in cubic feet.

Question 3: is a unit of measurement that is used to express a product's length in feet.

cubic foot
board foot
linear foot (Correct answer)
basal area

Correct answer: linear foot

A linear foot is a unit of measurement used to express the length of a product in feet, without regard to its width or thickness. This is commonly applied to materials like lumber, pipes, or fabric where the primary dimension of interest is length. It contrasts with units like board feet or cubic feet, which account for volume.

Question 4: Is there a unit of measurement that has the same volume as a rough wood cube with six sides that are each one foot long?

board foot
linear foot
cubic foot (Correct answer)
square foot

Correct answer: cubic foot

A cubic foot is a standard unit of volume defined as the volume of a cube with sides that are each one foot in length. In forestry, it's used to measure the solid wood volume of individual logs, trees, or entire stands. This unit provides a precise measure of wood content, unlike stacked volume units which include air spaces.

Question 5: Is a piece of raw wood that is 1 foot square and 1 inch thick a unit of measurement?

board foot (Correct answer)
basal area
linear foot
cubic foot

Correct answer: board foot

A board foot is a standard unit of lumber volume, defined as a piece of wood 1 foot long, 1 foot wide, and 1 inch thick. This unit is widely used in the timber industry for measuring and pricing sawn lumber. It provides a convenient way to quantify wood volume for commercial transactions.

Question 6: separating the tree from the measurement location

100 feet
88 feet
48 feet
66 feet (Correct answer)

Correct answer: 66 feet

In forestry, 66 feet is a significant distance, often associated with the length of a Gunter's chain, a historical surveying tool. This distance is frequently used as a standard baseline or offset for various measurements, such as establishing plot boundaries or determining distances from a tree for specific mensuration techniques. It helps standardize data collection in the field.

Question 7: At what height is a diameter measured. a standard for measuring all diameters.

breast height (Correct answer)
stand density
volume scale
merchandable height

Correct answer: breast height

Breast height is the standard height at which tree diameter is measured, typically defined as 4.5 feet (or 1.37 meters) above ground level on the uphill side of the tree. This standardized measurement, known as Diameter at Breast Height (DBH), ensures consistency across different trees and studies. It is a fundamental parameter for estimating tree volume, growth, and stand density.

Question 8: 4'5".(4 feet 5 inches) (4 feet 5 inches)

Yardstick
Piece
DBH standard measure (Correct answer)
Linear foot

Correct answer: DBH standard measure

4 feet 5 inches (4'5") is equivalent to 4.416 feet, which is very close to the standard 4.5 feet (or 1.37 meters) used for Diameter at Breast Height (DBH) measurements. While 4.5 feet is the most common standard, slight variations or approximations like 4'5" might be used in specific contexts or regions to define the breast height measurement point. This ensures consistency in tree diameter assessment.

Question 9: From eye to tree, Biltmore stick's distance

314 inches
10 inches
25 feet (Correct answer)
84 feet

Correct answer: 25 feet

The Biltmore stick is a versatile tool for estimating tree diameter and height. While for diameter, it's held at arm's length (around 25 inches) from the eye, for height measurements, the observer stands a fixed distance from the tree. Although 66 feet (one chain) is a common distance, 25 feet can also be a specified distance in certain mensuration protocols for estimating tree height using a Biltmore stick.

Question 10: Does a pile of wood have any air spaces in between the pieces?

face
cord (Correct answer)
arc
cubit

Correct answer: cord

A cord is a standard unit of measure for stacked firewood, typically defined as a pile 4 feet wide, 4 feet high, and 8 feet long, totaling 128 cubic feet. Crucially, this volume includes the air spaces between the individual pieces of wood, which is why the actual solid wood content of a cord is less than 128 cubic feet. This unit accounts for the practical reality of stacking irregular wood pieces.

Question 11: are typically discovered on the margin of tree scale striations

altimeter
hypsometer (Correct answer)
biltmore stick
dendrometer
height

Correct answer: hypsometer

A hypsometer is an instrument used in forestry to measure the height of trees. These devices often feature scales or striations that correspond to different tree heights when viewed from a fixed distance. The 'margin of tree scale striations' likely refers to the markings or readings on the hypsometer that allow foresters to determine tree height accurately.

Question 12: Measurements obtained outside the bark with the bark thickness subtracted, often known as the diameter at breast height

tyrosine
dbh (Correct answer)
cord
cambium

Correct answer: dbh

DBH stands for Diameter at Breast Height, which is a fundamental measurement in forestry. While DBH is typically measured outside the bark, for precise volume calculations or growth studies, the bark thickness is sometimes subtracted to obtain the diameter inside bark (DIB). This adjustment provides a more accurate measure of the actual wood volume.

Question 13: is a unit of measurement that describes the quantity or number of wood products with a particular dimension.

whole
particle
piece (Correct answer)
peace

Correct answer: piece

A 'piece' is a fundamental unit of measurement in the wood products industry, referring to an individual item of wood with specific dimensions. This unit is used to quantify the number of boards, logs, or other wood products, especially when dealing with standardized sizes or counts. It allows for clear communication and inventory management of discrete wood items.

Question 14: Height of the board-making part of the tree trunk

basal area
merchantable height (Correct answer)
diameter
breast height

Correct answer: merchantable height

Merchantable height refers to the portion of a tree trunk that can be economically harvested and processed into usable wood products, such as lumber or pulpwood. This measurement extends from the stump height up to a point where the trunk diameter or quality becomes too small or poor for commercial utilization. It is a critical factor in determining the economic value of a tree.

Question 15: is a unit of measurement used to describe the level of stocking on standing timber.

basal area (Correct answer)
board foot
linear foot
cubic foot

Correct answer: basal area

Basal area is a key forestry measurement that describes the cross-sectional area of all trees in a stand, measured at breast height, expressed per unit of land area (e.g., square feet per acre). It is a crucial indicator of stand density and stocking levels, providing valuable information for managing forest growth, competition, and timber yield.

Question 16: Laser-equipped Wheeler pentaprism telescopic scales

Gross volume
Nominal scale
Example of upper stem dendrometers (Correct answer)
Net volume

Correct answer: Example of upper stem dendrometers

Upper stem dendrometers are specialized instruments used to measure the diameter of a tree at various heights above breast height, often without needing to climb the tree. Laser-equipped Wheeler pentaprism telescopic scales are advanced examples of such dendrometers, utilizing optics and lasers to accurately determine stem diameters at different points along the trunk. This technology is vital for precise volume estimation and tree form analysis.

Free Bachelor of Forestry Forest Mensuration Questions and Answers

This area of forestry focuses on determining the dimensions (e.g., diameter, height, volume, etc.), form, age, and increment of individual trees, stands, or entire forests, whether they are still standing or have been felled.