Measurements 1 (4/26/21)

Question 1

Instruments used to measure tree diameters.

Answer 1

Dendrometers

Question 2

Instruments used to measure tree heights.

Answer 2

Hypsometers

Question 3

What is a Biltmore stick used to measure?

Answer 3

Height and diameter

Question 4

For accurate readings, a Biltmore stick should be held how many inches from your eye?

Answer 4

25”

Question 5

This instrument measures total tree height by take one reading at stump height and one reading at the top of the tree.

Answer 5

Clinometer

Question 6

Should be measured on the uphill side of a tree at 4.5 feet above the ground.

Answer 6

DBH

Question 7

This instrument is used to measure plot radius when line plot timber cruising.

Answer 7

Logger’s Tape

Question 8

When cruising timber with a _____ one stands at the plot center and views the trees to determine whether they are in or out of an imaginary plot radius.

Answer 8

Prism

Question 9

A bark gauge is used to measure _____.

Answer 9

Bark Thickness

Question 10

An increment bore is used to determine a tree’s ____.

Answer 10

Age

Question 11

Measuring DBH is most constant when using a _____.

Answer 11

D-Tape

Question 12

A conversion factor generally used in MS to convert pine pulpwood from cord volume to tons.

Answer 12

2.6 tons of pine in a cord

Question 13

A product with a 6” DBH and larger containing a minimum of 20’ tree height and measured to a 4” top in 5’ increments.

Answer 13

Pulpwood

Question 14

A product with a 9-12” DBH containing a minimum of 24’ tree height and measuring to the nearest half log to a 6” top.

Answer 14

Chip-N-Saw

Question 15

A product with 13” DBH and larger, tree height is measured to the nearest half log to a 10” top.

Answer 15

Hardwood Saw Timber

Question 16

Standing tree board foot volume tables are based on a tree’s ______, _____, _______.

Answer 16

Height
DBH
Form Class

Question 17

Each change in form class accounts for about ___% of tree volume.

Answer 17

3

Question 18

In converting hardwood saw timber to tons, an average of __ tons per MDF is an educated estimate.

Answer 18

8

Question 19

Simply put, the Girard form class is a quotient used to express a tree’s ____.

Answer 19

Taper

Question 20

A tabulation of the total number of stems in a stand by DBH class and species.

Answer 20

Stand Table

Question 21

A tabulation of the total volume of stems in a stand by DBH class and species.

Answer 21

Stock Table

Question 22

The distance from ground level to the upper tip of a tree crown.

Answer 22

Total Tree Height

Question 23

The usable portion of a tree’s stem.

Answer 23

Mechantable Height

Question 24

Ratio between DIB at 17.3 feet to the DOB at 4.5 feet.

Answer 24

Form Class

Question 25

What is the cross sectional area of a tree at breast height?

Answer 25

Basal Area

Question 26

Trees of the same species and age with large crowns generally have a higher growth rate than trees with a smaller crown. (T/F)

Answer 26

True; the bigger the crown the faster the tree undergoes photosynthesis.

Question 27

Taller trees generally have a lower form class than shorter trees of a given species. (T/F)

Answer 27

False; the taller the tree the less taper it has per foot

Question 28

Counting the growth rings of a tree sampled at 4.5 feet above the ground will give you an accurate age of the tree. (T/F)

Answer 28

False; you have to add a few for the growth up to 4.5 feet

Question 29

A timber sales cruise or land acquisition cruise does not need to be as intense or accurate as a management plan cruise or an inventory cruise. (T/F)

Answer 29

False; should be more accurate since money is changing hands.

Question 30

You are performing a stump cruise and all the trees in the stand are cut. How can you estimate the doh and merchantable heights of the cut trees?

Answer 30

Look at the surrounding trees.

Question 31

How would you measure the DBH on a tree that forks at approximately feet above the ground?

Answer 31

Measure each stem

Question 32

Where would you measure the DBH on a cypress or tupelo gum?

Answer 32

Above the butt swell

Question 33

What are the 3 log rules for estimating board foot volume of standing timber?

Answer 33

Doyle, International, Scribner

Question 34

What are the 2 methods for selling standing timber?

Answer 34

Lump Sum and per ton

Question 35

The purpose of a ______ is to determine as precisely as time and money will permit, the volume of standing trees in a given area.

Answer 35

Timber Cruise

Question 36

The value of standing timber is referred to as _____.

Answer 36

Stumpage

Question 37

A forester is measuring a tree with a Suunto clinometer. It has a bottom reading of -5 and a top reading of 43. What is the height of the tree?

Answer 37

48 feet