Geography Optional Paper II – Page 6
Natural Vegetation & Soils of India
1. Introduction
Natural vegetation and soils form the ecological base of India’s agriculture, biodiversity, and environmental sustainability. Their distribution is closely linked with climate, relief, parent rock, and human activities.
2. Factors Influencing Natural Vegetation
- Climate: Rainfall, temperature, humidity
- Relief: Altitude and slope
- Soil: Fertility and depth
- Biotic Factors: Human interference, grazing
3. Major Types of Natural Vegetation in India
🌳 Tropical Evergreen Forests
- Rainfall above 200 cm
- Western Ghats, Andaman & Nicobar Islands
- Ebony, Mahogany, Rosewood
🌳 Tropical Deciduous Forests
- Rainfall: 70–200 cm
- Teak, Sal, Shisham
- Central India, Deccan Plateau
🌵 Tropical Thorn Forests
- Rainfall below 70 cm
- Rajasthan, Gujarat
- Babul, Cactus, Khejri
🌲 Montane Forests
- Altitude-based zonation
- Conifers at higher elevations
- Himalayan region
🌊 Mangrove Forests
- Tidal and deltaic regions
- Sundarbans, Godavari delta
- Salt-tolerant species
4. Importance of Natural Vegetation
- Ecological balance
- Climate regulation
- Livelihood of tribal communities
- Carbon sink and biodiversity conservation
5. Major Soil Types of India
🟤 Alluvial Soils
- River valleys and deltas
- Highly fertile
- Rice, wheat, sugarcane
⚫ Black Soils (Regur)
- Derived from basalt
- High moisture retention
- Cotton cultivation
🔴 Red Soils
- Iron-rich but poor in nitrogen
- Deccan plateau
- Millets and pulses
🟡 Laterite Soils
- High rainfall regions
- Leached and acidic
- Tea, coffee, cashew
🏜️ Arid & Desert Soils
- Low humus content
- Rajasthan and Gujarat
6. Soil Degradation in India
- Soil erosion
- Salinization and alkalization
- Over-irrigation
- Deforestation
7. Soil Conservation Measures
- Contour ploughing
- Afforestation
- Terracing
- Crop rotation
8. Previous Year Question (Model)
“Discuss the distribution of natural vegetation in India and explain its relationship with soil and climate.”
9. Answer Writing Tips
- Draw vegetation–soil overlap maps
- Use tables for soil comparison
- Link with conservation and climate change
📘 Shaktimatha Learning | Geography Optional – Environment Simplified
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