Topic Summaries

Management of hot deserts

IGCSE > Geography > Pearson IGCSE > IGCSE Geography Topic Summaries > Hot desert ecosystems > Management of hot deserts
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Weather hazards and atmospheric circulation

Hot desert ecosystems

Cold environment ecosystems

Glacial landscapes

Glacial landform processes

Energy supply

  • Water and soil management: 
    • Irrigation systems: efficient irrigation methods, like drip irrigation, deliver water directly to plant roots, reducing water waste and soil erosion. 
    • Bunds: low stone walls or barriers trap water and prevent soil from being washed away, commonly used in the Sahel region. 
  • Crop rotation: alternating crops helps maintain soil fertility and reduces over-cultivation. 
  • Shelterbelts: planting rows of trees (e.g. the Great Green Wall in Africa) acts as windbreaks or shelterbelts, reducing wind erosion and stabilizing the soil. This increases food security as more water is available for agriculture.
  • Use of appropriate technology: using solar energy for cooking can reduce reliance on wood and protect trees, thereby reducing soil erosion.
  • Afforestation and reforestation: planting trees and shrubs helps stabilise sandy soils, reduce surface temperatures through shading, and increase moisture retention. Trees also provide habitats for wildlife and can restore degraded ecosystems over time.
  • Education and community involvement: local communities are trained in sustainable land use practices, such as water conservation, organic farming, and soil restoration techniques.

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