AnswersIC Environmental Science - DeeringThe Importance of Trees

Modern Forestry Answers

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1
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What distinguishes even-aged management practices from uneven-aged management practices?

A
Even-aged practices remove larger groups of trees than uneven-aged management practices.
B
Even-aged practices are similar to minor natural disturbances while uneven-aged practices are similar to major natural disturbances.
C
Even-aged practices leave areas with greater variance than uneven-aged practices.
D
All of the above
2
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Reforestation always occurs as a result of human intervention.

A
T
B
F
3

What fraction of the fossil fuel emissions in the United States could be absorbed by converting 25% of agricultural land in the U.S. to native forests?

A
approximately 10%
B
approximately 20%
C
approximately 30%
D
approximately 40%
4

How does seed-cutting differ from shelterwood cutting?

A
Shelterwood cutting removes all trees within a given area.
B
Shelterwood cutting takes place over several years.
C
Seed-cutting takes place over several years.
D
Seed-cutting is more damaging to the natural environment.
5

Where is the carbon taken in by plants during photosynthesis stored?

A
the ground
B
plant structures
C
the air
D
all of the above
6

Which of the following forest management practices is best for reestablishing areas of forest?

A
shelterwood cutting
B
even-aged management
C
reforestation
D
uneven-aged management
7

The main purpose of a forester is to identify land for timber harvesting.

A
T
B
F
8

Which of the following is not part of the role of a forester?

A
develop sustainable practices
B
prevent removal of timber
C
determine means for continued growth
D
assess timber quality
9

Even-aged management practices involves clearing trees that _______.

A
are all the same height
B
are all the same weight
C
are all near the same age
D
are all of widely different ages
10

Why is clearcutting an especially damaging forestry practice for species that rely upon older trees for their survival?

A
Clearcutting removes all trees in a stand, old and young.
B
Clearcutting specifically removes older trees in a stand.
C
Clearcutting forces younger trees to mature faster.
D
Clearcutting is not a damaging forestry practice.
11

Forests are the only carbon sinks on Earth.

A
T
B
F
12

Which of the following about carbon sinks is not true?

A
They emit more carbon than they take in.
B
They take in more carbon they emit.
C
They store carbon from the atmosphere.
D
They include oceans and forests.
13

How does the destruction of forests contribute to levels of atmospheric carbon?

A
Levels of atmospheric carbon are unaffected by destruction of forests, because the carbon entering the carbon cycle from the dead trees balances out the loss of carbon absorption during photosynthesis.
B
When trees are destroyed, their stored carbon reenters the carbon cycle decreasing levels of atmospheric carbon.
C
Fewer trees leads to greater amounts of carbon dioxide being absorbed from the atmosphere.
D
Fewer trees leads to smaller amounts of carbon dioxide being absorbed from the atmosphere.
14

How do trees act as carbon sinks?

A
They take in carbon during the process of photosynthesis.
B
Carbon is stored in their tissue.
C
They remove carbon dioxide from the atmosphere.
D
All of the above
15

A forester is _______

A
a person who cuts down trees
B
a park ranger
C
a person who manages and supervises land used for timber production
D
responsible for creating topographical maps of forests

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