Syllabus: GS-III (Environment & Biodiversity) | APSC GS Paper V (Environment, Ecology & Conservation)

Why in the News?

World Rainforest Day (22 June) has once again highlighted the ecological importance of Assam’s tropical rainforests, particularly Dehing Patkai National Park, Jeypore Rainforest, and Hollongapar Gibbon Sanctuary, which are among India’s most valuable biodiversity-rich ecosystems.

Why are Assam’s Rainforests Important?

• Assam’s rainforests lie within the Eastern Himalayan Biodiversity Hotspot and the Indo-Burma Biodiversity Hotspot, two of the world’s most ecologically significant regions.
• These forests act as carbon sinks, climate regulators, water reservoirs, biodiversity hotspots, and natural barriers against soil erosion, making them crucial for both environmental sustainability and human well-being.

Major Rainforest Ecosystems of Assam

Dehing Patkai National Park

• Often called the “Amazon of the East”, Dehing Patkai derives its name from the Dehing River and Patkai Hills.
• Located in Dibrugarh and Tinsukia districts, spread across 234.26 sq km, declared Wildlife Sanctuary in 2004 and National Park in 2021.
• Hosts around 42 mammal species, 40 reptile species, over 200 butterfly species and more than 200 bird species.
• Provides habitat to several rare and threatened species and forms one of India’s last remaining lowland tropical rainforests.

Jeypore Rainforest

• Forms part of the larger Dehing Patkai landscape, known for dense evergreen forests, rich wildlife diversity and ecological connectivity.
• Acts as an important wildlife corridor supporting elephants, primates and numerous bird species.

Hollongapar Gibbon Sanctuary

• Located in Jorhat district, it is India’s only protected area primarily dedicated to the conservation of the Western Hoolock Gibbon, India’s only ape species.
• Also supports capped langur, stump-tailed macaque, reptiles, birds and diverse plant species.

Major Threats to Assam’s Rainforests

• Habitat fragmentation, encroachment, illegal logging, mining activities and infrastructure expansion continue to threaten rainforest ecosystems.
• Coal mining and oil exploration in the broader Dehing Patkai landscape have raised concerns about wildlife disturbance and ecological degradation.
• Climate change is altering rainfall patterns, species distribution and habitat suitability across the region.
• Fragmentation around Hollongapar Gibbon Sanctuary has disrupted wildlife movement and increased human-wildlife interactions.

Conservation Measures

• Declaration of Dehing Patkai as a National Park in 2021 strengthened legal protection for the rainforest ecosystem.
• Protected Area Network under the Wildlife Protection Act, 1972 safeguards critical habitats and endangered species.
• Scientific tools such as remote sensing, geospatial mapping, artificial intelligence and ecological monitoring are increasingly being used for conservation planning.
• Community participation, sustainable ecotourism and habitat restoration programmes are helping strengthen conservation efforts.

Why Assam’s Rainforests Matter for the Future

• They support climate change mitigation, biodiversity conservation, water security, scientific research and sustainable livelihoods.
• They are essential for maintaining ecological resilience in Northeast India.
• Protecting these forests also safeguards indigenous knowledge systems and local cultural heritage.

Exam Hook: Key Takeaways

• Dehing Patkai is known as the “Amazon of the East”.
• Hollongapar Gibbon Sanctuary protects India’s only ape, the Western Hoolock Gibbon.
• Assam’s rainforests fall within the Eastern Himalayan and Indo-Burma Biodiversity Hotspots.
• Dehing Patkai became a National Park in 2021.
• Rainforests play a vital role in carbon sequestration, biodiversity conservation and climate regulation.

Mains Question

“Assam’s tropical rainforests are ecological assets of national importance. Discuss their significance, major threats and the measures required for their long-term conservation.” (150 words)

One-Line Wrap

Assam’s rainforests are not just forests but life-support systems that sustain biodiversity, regulate climate and secure the ecological future of Northeast India.