Question

Which of these could lead to gully erosion?

• A. Sparse ground cover caused by land clearing, over-grazing, repeated cultivation, fire, rabbits, feral animals or drought.
• B. Stable soils in drainage lines.
• C. Increased runoff caused by low levels of vegetation cover and/or poor soil infiltration.
• D. Intense rainfall.

Answer 1

Answer: (A), (C), (D)

Intense rainfall.

Gully erosion is a widespread and often dramatic form of soil erosion caused by flowing surface water. It consists of open, unstable channels that have been cut more than 30 centimetres deep into the ground. Some of the causes for gully erosion include

• sparse ground cover caused by land clearing, over-grazing, repeated cultivation, fire, rabbits, feral animals or drought.
• concentrated runoff from steep ground flowing into cleared drainage depressions.
• unstable soils in drainage lines.
• intense rainfall.
• increased runoff caused by low levels of vegetation cover and/or poor soil infiltration.