soil erosion summary

based on exam mark scheme

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  • Soil Erosion
    • Effects
      • reduced productivity due to lack of nutrients etc
      • sedimenta-tion of rivers due to run off, flooding downstream
        • coastal sedimentat-ion
      • increased atmospheric particulates due to wind blowing dry soil(dust)
      • desertification
      • land slides
      • famine
        • refugee movement
          • desertification
    • Conservation techniques
      • cultivation of long term crops
      • contour ploughing, contour bunding/tied ridges
      • terraces
      • wind brakes
      • multi cropping
      • cover crops
      • strip cropping
      • mulching
      • crop rotation


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