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Temperate Grassland

Climate, Soils, Vegetation, Human Impact

Author:Author ImageSyed Ali

Edu Level: Unit2

Date: Aug 8 2025 - 8:42 PM

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Temperate Grassland

Location

  • 40°–60° N and S, interiors of continents
  • Examples: Pampas (Argentina), Steppes (Eurasia), Prairies (USA), Veld (South Africa), Canterbury Plains (NZ)

Climate: Cool Temperate

  • Four seasons, large temperature variation (>30°C)
  • Summers up to 30°C, winters down to –20°C
  • Annual precipitation: 500–950 mm, mostly in spring/summer
  • Snowfall in winter

Vegetation

  • Grasslands with tufted or feathered grass types
  • NPP ~600 g/m²/year
  • Dominant species: Buffalo grass, grama
  • Deep roots (~2 m) bind soil and access groundwater
  • Grasses go dormant in autumn/winter, grow rapidly in spring
  • Thick sod layer makes ploughing difficult
  • Nutrient storage mainly in roots and rhizomes

Soil: Chernozem (Dark Earth)

  • Deep, fertile, well-structured, high humus content
  • Slight leaching during spring melt, capillary action in summer → alkaline surface
  • Poorly defined B horizon
  • Calcium carbonate nodules form in upper C horizon

Human Impact

  • Agriculture:
    • Extensive crop production (cereals like wheat, maize) and cattle ranching
    • Examples: Russian Steppes, North American Prairies, Pampas
  • Soil Erosion:
    • Over-farming and removal of grasses can lead to wind erosion and dust storms (e.g. 1930s Dust Bowl in the US)
  • Monoculture & Chemicals:
    • Use of pesticides and fertilizers reduces biodiversity and contaminates water

About Syed Ali

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