Which one of the following is the first stage of water erosion?
Show Hint
Remember the erosion sequence:
\[\begin{aligned}
\text{Splash} \rightarrow \text{Sheet} \rightarrow \text{Rill} \rightarrow \text{Gully}
\end{aligned}\]
Maintaining vegetation cover is the most effective way to prevent the first stage (splash erosion) by absorbing the kinetic energy of raindrops.
Step 1: Understanding the Concept:
Water erosion is the detachment and transport of soil particles by rainfall and runoff.
It progresses through distinct, sequential stages as the kinetic energy of water increases. Step 2: Detailed Explation:
The sequential stages of water-induced soil erosion are:
• Splash erosion: The first stage, caused by the impact of falling raindrops on bare soil. The kinetic energy of the raindrops breaks down soil aggregates, detaching individual soil particles and splashing them into the air.
• Sheet erosion: The uniform removal of a thin, surface layer of soil by shallow overland water flow.
• Rill erosion: As runoff concentrates, it forms small, shallow channels (rills) that can be easily removed by normal tillage operations.
• Gully erosion: An advanced stage where rills deepen and widen into large channels (gullies) that cannot be obliterated by regular tillage.
Therefore, splash erosion is the first stage of water erosion. Step 3: Fil Answer:
The correct option is (A).
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