Question

How does afforestation contribute to soil conservation, and what other methods can be used to prevent soil erosion?

Answer 1

Afforestation means planting trees, which helps in soil conservation by:

1. Holding the soil: The roots of trees bind the soil together, preventing it from washing away.
2. Reducing erosion: Trees block strong winds and delay the flow of water, which could carry soil away.
3. Improving soil fertility: Leaves from trees degrade and enrich the soil with nutrients.

Other methods to prevent soil erosion:

1. Terrace Farming: Cutting hills into steps allows water to flow slowly, which reduces soil erosion.
2. Contour Ploughing: Ploughing follows the natural curves of the land to prevent soil erosion.
3. Crop Rotation: To maintain the soil healthy, grow different crops on the same land.
4. River Embankments: Building strong walls along rivers to prevent soil from being carried away during floods.
5. Controlling Overgrazing: Maintaining vegetation intact by preventing animals from overusing land.