Forest Mensuration Exam 2 with
Answers
What is the purpose of timber inventory? - correct answer-To determine the volume of
standing trees in a given area. This requires a reliable estimate of the forest area and
measurement of all or an unbiased sample of trees within this area.
The choice of a particular inventory system is governed by what factors? - correct
answer-cost
size of the ownership
location
availability of crews
length of time available for the project
What are some principal information needed for land acquisition with respect to timber
inventory? - correct answer--net volume and value of merchantable trees growing in
operable areas.
-notations on timber quality, by species
-soil or site quality
-presence of nonmerchantable growing stock
-proximity to mills or primary markets
What information is needed for management plan cruises? - correct answer--timber
growth, yield, and allowable cut,
What inventory systems are used in California? - correct answer--FVS
-FPS
-FORSEE
What are the four timber survey classes? - correct answer-1) land acquisition inventory
2) inventories for logging or timber sales
3) management plan inventories or continuous forest inventory systems
4) special surveys designed for evaluating conditions such as stand improvement
needs, plantable areas, insect and disease infestations, or timber trespass.
What is the primary objective of the FIA? - correct answer-To provide the resource data
needed for national assessments of this nation's forest and range resources.
How many FIA plots are there in the California? - correct answer-16,837
, In accordance with the tree volume equations to be used, standing trees may be tallied
by? - correct answer-- A count by species
-species and DBH
-various combinations of species, DBH, height, form crown length, quality class
What is a critical element of an inventory project? - correct answer-check cruising
The ability to make proper allowance for defective trees encountered on timber
inventories requires experience that can be gained only by? - correct answer--getting
repeated practice in estimating stand tree defects
-going to the log deck and watching a burea scaler scale logs, and ask him questions
How should best should you deal with tree-defect estimation? - correct answer-record
the actual dimension of the tree and then tally visible defect by log position.
When is a complete tree tally considered? - correct answer-only considered for high-
value trees or when a 100 percent tree tally is feasible.
What are things to consider when conducting a timber inventory? - correct answer--
sample size
- plot size and shape (fixed area or variable plots)
- sampling design (simple random, systematic, or stratified)
What is a stand table? - correct answer-a tabulation of the total number of stems (or
average number of stems per acre) in a stand or compartment, by dbh classes and
species.
stand table = tree density by diameter class = frequency distribution of diameters =
diameter distribution
What is a stock table? - correct answer-a stock table lists the total volume of stems (or
average volume per acre or ha) in a stand, by dbh classes and species.
stock table = volume by diameter class
Where are stock tables derived from? - correct answer-stock tables are derived from
stand tables
What is a DIB log table? - correct answer-A DIB log table summarizes the total volume
by species and small-end diameter of logs
What are the fixed-area sampling units called? - correct answer-strips or plots
What is the method by which strip and plot inventories select sample trees? - correct
answer-probability proportional to frequency
What are the characteristics to be assessed within a sample area for individual tree
tallies? - correct answer--species
Answers
What is the purpose of timber inventory? - correct answer-To determine the volume of
standing trees in a given area. This requires a reliable estimate of the forest area and
measurement of all or an unbiased sample of trees within this area.
The choice of a particular inventory system is governed by what factors? - correct
answer-cost
size of the ownership
location
availability of crews
length of time available for the project
What are some principal information needed for land acquisition with respect to timber
inventory? - correct answer--net volume and value of merchantable trees growing in
operable areas.
-notations on timber quality, by species
-soil or site quality
-presence of nonmerchantable growing stock
-proximity to mills or primary markets
What information is needed for management plan cruises? - correct answer--timber
growth, yield, and allowable cut,
What inventory systems are used in California? - correct answer--FVS
-FPS
-FORSEE
What are the four timber survey classes? - correct answer-1) land acquisition inventory
2) inventories for logging or timber sales
3) management plan inventories or continuous forest inventory systems
4) special surveys designed for evaluating conditions such as stand improvement
needs, plantable areas, insect and disease infestations, or timber trespass.
What is the primary objective of the FIA? - correct answer-To provide the resource data
needed for national assessments of this nation's forest and range resources.
How many FIA plots are there in the California? - correct answer-16,837
, In accordance with the tree volume equations to be used, standing trees may be tallied
by? - correct answer-- A count by species
-species and DBH
-various combinations of species, DBH, height, form crown length, quality class
What is a critical element of an inventory project? - correct answer-check cruising
The ability to make proper allowance for defective trees encountered on timber
inventories requires experience that can be gained only by? - correct answer--getting
repeated practice in estimating stand tree defects
-going to the log deck and watching a burea scaler scale logs, and ask him questions
How should best should you deal with tree-defect estimation? - correct answer-record
the actual dimension of the tree and then tally visible defect by log position.
When is a complete tree tally considered? - correct answer-only considered for high-
value trees or when a 100 percent tree tally is feasible.
What are things to consider when conducting a timber inventory? - correct answer--
sample size
- plot size and shape (fixed area or variable plots)
- sampling design (simple random, systematic, or stratified)
What is a stand table? - correct answer-a tabulation of the total number of stems (or
average number of stems per acre) in a stand or compartment, by dbh classes and
species.
stand table = tree density by diameter class = frequency distribution of diameters =
diameter distribution
What is a stock table? - correct answer-a stock table lists the total volume of stems (or
average volume per acre or ha) in a stand, by dbh classes and species.
stock table = volume by diameter class
Where are stock tables derived from? - correct answer-stock tables are derived from
stand tables
What is a DIB log table? - correct answer-A DIB log table summarizes the total volume
by species and small-end diameter of logs
What are the fixed-area sampling units called? - correct answer-strips or plots
What is the method by which strip and plot inventories select sample trees? - correct
answer-probability proportional to frequency
What are the characteristics to be assessed within a sample area for individual tree
tallies? - correct answer--species
