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Zorluk: OrtaMethods and Techniques of Environmental Conservation

In the arid and semi-arid northern regions of Nigeria, such as Kano and Jigawa states, fast-moving winds contribute significantly to topsoil loss and desert encroachment. To mitigate this degradation, lines of drought-tolerant trees and shrubs are planted perpendicular to the prevailing wind direction. Which environmental conservation technique is being implemented in this scenario?

  1. ShelterbeltsCevap
  2. B
    Terracing
  3. C
    Contour bunding
  4. D
    Crop rotation

Cevap

The correct conservation technique is the establishment of shelterbelts.
The correct response identifies shelterbelts, which are engineered rows of trees planted across the path of prevailing winds in dry regions like Northern Nigeria to slow down wind movement, trap blowing soil particles, and check the expansion of desert conditions.

Adım Adım Çözüm

1
Analyze the environmental problem described in the scenario
The issue involves severe wind erosion, topsoil loss, and desertification in semi-arid northern Nigeria.
Identifying the primary agent of degradation (wind) narrows down the suitable conservation strategy.
2
Evaluate the mechanism of the described technique
Planting trees perpendicular to prevailing winds acts as a physical barrier that reduces wind velocity at ground level.
Biological barriers designed to check wind speed are categorized specifically as shelterbelts or windbreaks.
3
Distinguish shelterbelts from water-erosion and soil-fertility conservation techniques
Techniques like terracing and contour bunding target water runoff on slopes, whereas crop rotation targets nutrient replenishment.
This confirms that shelterbelts are the unique biological solution tailored for wind erosion control.

Anahtar Kavram

Shelterbelts and Windbreaks for Desertification Control
Tahmini Süre:1m 0s
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Konular

Methods and Techniques of Environmental Conservation

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