Question

Erosion is function of:

• A. Erosion \(=f(\text{erosivity})\times(\text{erodibility})\)
• B. Erosion \(=f(\text{sheet}\times\text{gully})\)
• C. Erosion \(=f(\text{climate}\times\text{duration})\)
• D. Erosion \(=f(\text{sheet}\times\text{ravine})\)

Hint:

Erosion depends on the erosive power of the agent and the erodibility of soil.

Answer 1

The Correct Option is A

Concept:
Soil erosion mainly depends on two important factors: erosivity and erodibility.

Step 1: Understand erosivity.
Erosivity is the power of rainfall, runoff or wind to cause erosion. \[ \text{Erosivity}=\text{erosive power of agent} \]

Step 2: Understand erodibility.
Erodibility is the susceptibility of soil to erosion. \[ \text{Erodibility}=\text{soil vulnerability} \]

Step 3: Combine both factors.
Erosion occurs when erosive force acts on erodible soil. \[ \text{Erosion}=f(\text{erosivity}\times\text{erodibility}) \] \[ \therefore \text{Correct Answer is (A)} \]