Class 8 Geography Chapter 3: Natural Vegetation and Wildlife Resources

Factors Affecting Natural Vegetation

  • Relief of the Land: Topography and elevation shape the vegetation type.

  • Climate: Temperature and moisture levels directly dictate plant growth.

  • Human Factors: Regional economic development drives land use and clearance.

Types of Forests and Vegetation

  • Forest Definition: A cluster of trees growing close together.

  • Evergreen Forests: Includes Tropical Evergreen, Temperate Evergreen, Mediterranean, and Coniferous forests.

    • Mediterranean Trees: Olive, oak, cork, fig, laurel, pine, fir, cedar, cypress, and citrus fruits (orange, lemon).

    • Tropical Region Forests: Tall, dense hardwood trees with broad leaves forming dense overhead canopies and multi-layered storeys (e.g., Mahogany, Ebony, Rosewood, Rubber).

  • Grasslands: Areas dominated by grass vegetation supporting herbivorous and carnivorous animals.

    • Temperate Grassland Fauna: Prairie dog, coyote, kangaroo, ostrich, emu.

Extreme Climate Vegetation Adaptations

  • Desert Vegetation:

    • Stunted trees and shrubs with thick, spongy stems to store water.

    • Deep-penetrating long roots to access moisture.

    • Thorny, wax-coated leaves to prevent water loss through transpiration.

  • Tundra Region Vegetation:

    • Short summers allow mosses, lichens, grasses, birch, willow, and colorful flowering plants to bloom.

Wildlife Distribution Across Asia

  • Tropical Regions: Lions, tigers, elephants, monkeys, leopards.

  • Temperate Regions: Cranes, herons, foxes, bears.

  • Cold Taiga and Tundra: Polar bears, lynxes, minks, sables, musk oxen, arctic foxes.

Key Conservation Strategies

  • For Vegetation:

    • Afforestation drives to expand forest cover.

    • Control shifting cultivation, overgrazing, and forest fires.

    • Legal bans and penalties for illegal tree felling.

  • For Wildlife:

    • Strict anti-poaching laws and legal bans on animal product trading (hides, tusks, horns, feathers).

    • Establishing National Parks, Wildlife Sanctuaries, and Biosphere Reserves.