What are the effects of accelerated soil erosion?

Question 1

Explain why there is reduced productivity?

Answer 1

• when soil is eroded, the most fertile topsoil is lost
• remaining soils may be less fertile so plant growth may be reduced
• erosion may leave shallower soil ( root penetration is more difficult )

Question 2

Explain why there is sedimentation in rivers and reserviors?

Answer 2

• deposited if water slows down and has less kinetic energy

- this reduces its flow capacity ( river is more likely to overflow and cause flooding following heavy rain )

Question 3

Explain why there is increased atmospheric particulates?

Answer 3

• wind erosion increases level of atmospheric particulates

- can make health problems such as asthma worse

Question 4

Explain why there is desertification?

Answer 4

• makes it more difficult for vegetation to grow

- contributes to further soil erosion and reduced rainfall