Syllabus: GS–III & V: Biodiversity Conservation, Climate Change, Sustainable Development

Why in the News?

The observance of the International Day for Biological Diversity (22 May) has once again drawn attention to the extraordinary biodiversity of Northeast India and the growing threats faced by its fragile ecosystems.

Northeast India: A Global Biodiversity Hotspot

Northeast India is one of the most biologically rich regions of the world. Located at the meeting point of the Indo-Malayan, Indo-Chinese and Himalayan biogeographic realms, it forms part of two global biodiversity hotspots—the Eastern Himalaya and the Indo-Burma Hotspot.

The region is home to:

• Region have more than 8,000 species of flowering plants, floral species belong to about 200 plant families out of 315 recorded from NE India
• Hundreds of orchid species, including many endemic varieties.
• Iconic wildlife such as the One-Horned Rhinoceros, Royal Bengal Tiger, Clouded Leopard, Hoolock Gibbon, and Asian Elephant.
• There are 51 Forest types in the region which are broadly divided into six categories. 
• Out of 9 important vegetation types in India 6 are found in the NE region. 
• High biological diversity is related to the forest cover of the region. 
• In each state of NE India, 60% of geographical area is under forest cover. 

These ecosystems provide vital services such as clean water, fertile soil, climate regulation, pollination, and livelihood support to millions of people.

Major Threats to Northeast Biodiversity

1. Habitat Loss and Fragmentation

• Expansion of agriculture, roads, dams, mining and urbanisation is shrinking natural habitats.
• Forest fragmentation isolates wildlife populations and reduces genetic diversity.
• Encroachment into elephant corridors and wetlands has intensified human-wildlife conflict.

2. Climate Change

• Rising temperatures and changing rainfall patterns are altering ecosystems.
• Increased floods, landslides and droughts threaten both wildlife and local communities.
• Sensitive alpine and wetland ecosystems are particularly vulnerable.

3. Poaching and Illegal Wildlife Trade

• Species such as rhinos, pangolins, tigers and exotic birds remain targets of illegal trade networks.
• Porous international borders make enforcement challenging.

4. Invasive Alien Species

• Species such as Parthenium, Lantana camara, Water Hyacinth, and Senna spectabilis disrupt native ecosystems.
• They compete with indigenous plants and reduce habitat quality.

5. Unsustainable Resource Extraction

• Excessive logging, overfishing and unregulated collection of forest products are degrading ecosystems.
• Forest fires and shifting cultivation in some areas also increase ecological stress.

Conservation Efforts and Way Forward

• Biological Diversity Act, 2002 provides the legal framework for biodiversity conservation in India.
• The National Biodiversity Authority works to conserve biological resources and traditional knowledge.
• Expansion of protected areas, wildlife corridors and community reserves must continue.
• Indigenous communities should be empowered through community-based conservation.
• Sustainable ecotourism, organic farming and biodiversity-friendly development should be promoted.
• Stronger regional cooperation is needed to combat wildlife trafficking and manage shared ecosystems.

Exam Hook: Key Takeaways

• Northeast India lies within the Eastern Himalaya and Indo-Burma biodiversity hotspots.
• Habitat loss, climate change, poaching and invasive species are major threats.
• Biodiversity conservation is directly linked to ecological security, livelihoods and climate resilience.
• Community participation is essential for long-term conservation success.

Mains Question

“Northeast India is one of the world’s richest biodiversity regions but faces increasing ecological threats.” Discuss the major challenges and suggest measures for sustainable biodiversity conservation.

One-Line Wrap

Protecting Northeast India’s biodiversity is not only an environmental necessity but also a vital step towards securing ecological stability, sustainable livelihoods and the natural heritage of future generations.

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