Indian Biodiversity and Its Diverse Landscape

India, one of the oldest civilizations in the world, has a rich history that spans thousands of years. Its unique geography and ecology have greatly influenced its culture and history. From the snow-covered peaks of the Himalayas in the north to the coastal southern peninsula, India offers a diverse range of landscapes and environments. The country’s varied climatic conditions contribute to its abundant flora and fauna, making it an attractive destination for those interested in regional cultures. This article delves into India’s biodiversity and diverse landscapes, which is valuable for UPSC exam preparation.

Biodiversity of India

India is recognized as one of the world’s most biodiverse countries, rich in both species and traditional knowledge. With 23.39% of its land covered by forests and trees, India is home to nearly 7% of the world’s recorded species, despite covering only 2.4% of the Earth’s total land area and supporting nearly 18% of the global human population.

India ranks:

• 7th in mammal species richness
  
• 9th in bird species
  
• 5th in reptile species
  

The country is also significant for its vertebrate endemism, ranking:

• 10th in bird endemism with 69 species
  
• 5th in reptile endemism with 156 species
  
• 7th in amphibian endemism with 110 species
  

India contributes 44% of global crop share, compared to the world average of 11%. The country’s biodiversity is represented by:

• Two Realms
  
• Five Biomes
  
• Ten Biogeographic Zones
  
• Twenty-five Biogeographic Provinces
  

Realms of India

A biogeographic realm is a major division of the Earth based on terrestrial organism distribution. Realms are further broken into bioregions and ecoregions. The Indian subcontinent is divided into two biogeographic realms:

• Palearctic Realm: Represented by the Himalayan region.
  
• Malayan Realm: Represented by the rest of the subcontinent.
  

Biomes of India

A biome is a large community of vegetation and wildlife adapted to specific climatic conditions. India’s five major biomes are:

1. Tropical Humid Forests
   
2. Tropical Dry or Deciduous Forests (including Monsoon Forests)
   
3. Warm Deserts and Semi-deserts
   
4. Coniferous Forests
   
5. Alpine Meadows
   

Each biome is influenced by its climate, vegetation, and wildlife.

Biogeographic Zones

India has been divided into ten biogeographic zones based on its natural features and species distribution:

1. Trans-Himalayas
   
2. Himalayas
   
3. Desert
   
4. Semi-arid
   
5. Western Ghats
   
6. Deccan Peninsula
   
7. Gangetic Plain
   
8. North-east India
   
9. Islands
   
10. Coasts
    

These zones are used for planning wildlife protection areas and understanding species distribution.

Biogeographic Provinces

Biogeographic provinces are subdivisions of realms, with areas that have evolved distinct ecosystems due to geographic isolation. India is divided into 25 biogeographic provinces, further categorized based on habitat types and species evolution.

Fauna

Fauna refers to the animal life in a particular region or period. India, covering only 2.4% of the world’s land area, is home to over 7.5% of the world’s animal species, totaling nearly 92,000 known species. These include:

• Avifauna (birds)
  
• Pisci Fauna (fish)
  
• Microfauna (microorganisms like bacteria and viruses)
  
• Cryptofauna (unknown species)
  

India has over 6,350 vertebrates, and the majority of its fauna are invertebrates, comprising about 94% of the total.

Flora

India ranks 10th globally and 4th in Asia for plant diversity, hosting nearly 11% of the world’s floral species. The country is home to over 50,000 plant species, with 18,000 flowering plant species accounting for 6-7% of global plant diversity. India has a rich variety of plants classified into eight floristic regions: Western Himalayas, Eastern Himalayas, Assam, the Indus plain, the Ganges plain, the Deccan, Malabar, and the Andaman Islands.

Key plant groups found in India include:

• Algae
  
• Fungi
  
• Bacteria
  
• Lichens
  
• Bryophytes
  
• Pteridophytes
  
• Gymnosperms
  
• Angiosperms
  

Wildlife of India

India’s wildlife includes a vast array of flora and fauna that form complex ecosystems. The country is home to approximately 7-8% of the world’s plant and animal species. India’s forest cover includes tropical rainforests in the Andaman Islands, Western Ghats, and Northeast India, as well as coniferous forests in the Himalayas. The Indian Forest Act of 1927 helped protect natural habitats.

India also boasts a variety of iconic animals, including elephants, tigers, rhinoceroses, leopards, and smaller wildcats, as well as numerous reptiles like snakes, lizards, and crocodiles. A large portion of India’s flora and fauna is protected under the Wildlife Protection Act.

Conclusion

India, shaped by diverse geographical features, is rich in both flora and fauna. Its ecosystems, ranging from tropical rainforests to alpine meadows, support a variety of species. With a diverse range of animal and plant life, including iconic species such as the tiger and rhinoceros, India’s biodiversity is protected by various laws and regulations aimed at preserving its natural heritage. The country’s immense biodiversity offers valuable insights into its ecological balance and cultural significance.