HKDSE Geography/E2/Impacts of Sandstorms

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Impacts on Primary Industries

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  • Fields are buried. Sand and dust block out sunlight and discourage photosynthesis. Crop failure may occur.
  • Farming infrastructure and facilities, such as irrigation canals, are damaged by sandstorms. They take months to resume activity.
  • Winds blow away topsoil and crops. Nutrients in the topsoil and organic carbons are lost. Soil fertility is severely damaged.

Impacts on Secondary Industries

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  • Some factories may be closed down or even have their machinery damaged by sandstorms.
  • Labour productivity decreases as people get sick.

Impacts on Tertiary Industries

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  • Flights are delayed. Rail services may be cancelled as well.
  • Vehicles are damaged by the sand.

Impacts on Everyday Life

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  • Visibility decreases greatly.
  • Buildings are eroded.
  • Dust particles may carry viruses and fungi from the source area to spread diseases and cause outbreaks or even epidemics.
  • Allergies are triggered. Respiratory diseases like asthma and cardiovascular diseases are also possible. Healthcare spending increases