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Geography Optional 300+ Score Pack · Model answer

Classify soils based on their zonal distribution and describe the characteristics of pedocals.

  • UPSC 2015
  • Biogeography

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The zonal scheme is genetic, grouping soils by the factor controlling their profile. Vasily Vasilyevich Dokuchaev, from the 1880s, showed that Russian soils change in belts that follow climate and vegetation; his student Nikolai Mikhailovich Sibirtsev in the 1890s divided soils into zonal, intrazonal and azonal orders.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • The Three Orders
  • Characteristics of Pedocals
  • How Well Has the Scheme Held?
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