Exam 1

Question 1

Objectives of soil conservation

Answer 1

1. Use of land

2. Maintaining its productive capacity (sustainability)

Question 2

Soil survey and uses

Answer 2

• Tool
• Building house: Basement, septic tank
• Agricultural production use
• History
• potential crop yields
• Land use
• Capability classes
• Locations: Township and range
• Basically anything you need to know about the land

Question 3

Land use capability classes

Answer 3

1-8

Question 4

Land use sub classes

Answer 4

c, w E and S will kick you out of one

Question 5

C

Answer 5

Climate (cache valley’s issue)

Question 6

W

Answer 6

Water

Question 7

E

Answer 7

Erosion and sedimentation (Biggest issue in US)

Question 8

S

Answer 8

Plant root Restrictions

Question 9

Most important in the valley

Answer 9

8, Ranching or dry land farming

Question 10

Prime agricultural land (definition)

Answer 10

Land that has the best Soil, climate and chemical for food feed fiber soil seed.

Question 11

Unique farm land

Answer 11

ex. Cranberry bogs, benches in Utah for air drainage and soil texture.

Question 12

Critical Lands

Answer 12

Lands that have special for a variety of reasons. ex. military value, historical value, indian village of 180

Question 13

soil

Answer 13

renewable, just not in our lifetime

Question 14

Soil degradation

Answer 14

Physical, Chemical and biological

Question 15

Physical degradation

Answer 15

Sand, Silt, Clay

Question 16

Chemical degradation

Answer 16

Organic matter, house fertility and enzymes.

Question 17

Issue of more land

Answer 17

the land can no longer support the # of people in the world so we need more land to support them. however if we treated the land better then we could produce more on less

Question 18

Increasing production

Answer 18

we can, but it stresses the soil. We don’t know the limit of of plant production. there is increasing yields, but there will be a point where it will level off and we will no longer e able to support the population. Also the soil will degrade and productivity will drop we will not be able to continue the way we are doing

Question 19

cheap energy

Answer 19

the cheap oil made the price of food drop and is making it less expensive, however when the price increases the food prices will be increased.

Question 20

Rate of soil formation

Answer 20

0.466 T/ac/yr or 1 mt/Ha/yr. this is very general in cache valley it is much lower. Soil will never generate back in our lifetime

Question 21

Point source

Answer 21

You look at it and cans solve it

Question 22

Non-point source

Answer 22

can not specifically identify

Question 23

Concern about erosion

Answer 23

Big concern if you like to eat. Food will be grown on land.

Question 24

Obstacles to conservation

Answer 24

1. Tradition: the way its always been
2. Culture insecurity : may not have food
3. Money
   4.

Question 25

Soil factors for conservation

Answer 25

Texture, Climate, Slope, aspect, all sorts of things interact together

Question 26

Processes that elevate land

Answer 26

1. Erosion and deposition
2. Plate techtonics
3. Organic deposition

Question 27

Stream systems

Answer 27

1. open- Colorado goes to ocean

2. Closed- Bear River does not go to ocean

Question 28

Mass wasting

Answer 28

Driven by gravity. water is lubricant

Question 29

Sedimentary landforms

Answer 29

1. Wind

2. Water

Question 30

Water landforms

Answer 30

1. Flood plane
2. Terraces
3. Alluvial Fans
4. Piedmont
5. Deltas
6. Bottom deposits

Question 31

Wind Landforms

Answer 31

1. Sand: Sanddunes
2. Silt: Loess
3. Clay: Clay blown areas
4. Volcanic ash