ZIMSEC O Level Geography Notes: Methods of preventing desertification.
The following methods can be used to prevent and slow down the rate of desertification:
- Afforestation that is planting trees where none previously existed.
- Fallowing-allowing fields to fallow instead of growing crops on them continuously.
- Legislation-passing laws that favour conservative farming methods and practices and penalises those who do not follow the practices.
- Educating people about the impact of poor farming methods and schooling them on the best farming methods available to them.
- Planting trees lines for example gum trees to act as wind breaks and lessen the impact of wind erosion.
- Dam construction-for use in irrigation schemes and to provide alternative hydro-electric energy instead of relying on firewood.
- Practice irrigation for example using oases and rivers such as the Nile river.
- Limit settlements near water sources such as oases.
- Construct contours to conserve land and lessen the effects of erosion.
- Terracing to lessen the impact of erosion.
- Paddocking to implement controlled grazing and prevent overgrazing.
- Practice crop rotation.
- Create sand embankments.
- Fencing to protect forests.
- Grow drought resistant crops such as sorghum or practice activities such as extensive cattle ranching that put less pressure on pastures.
- Use alternative sources of fuel instead of firewood for example LP Gas.
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