Tiger Reserves and Biosphere Reserves of Assam
Assam is not only rich in wildlife; it is one of the few states that carries both a World Heritage Site and a biosphere reserve, along with several tiger reserves spread from the Bhutan foothills to the rainforests of the far east. The tiger reserves tell the story of how India has tried to save its national animal, and the Manas biosphere reserve shows how conservation can stretch across an entire landscape. For exams, this topic is valuable because the names and years here are precise and are asked again and again.
The four tiger reserves
Assam has four tiger reserves, and each one was notified in a different period of India's conservation history. The oldest is the Manas Tiger Reserve, which was brought under Project Tiger in 1973-74, at the very beginning of the programme. It lies in the Manas landscape on the bank of the Manas river and is the largest tiger reserve of Assam by area. The second is the Nameri Tiger Reserve, declared in 2000, which lies in Sonitpur district along the Jia-Bhoroli, also called the Kameng, river. The third is the Orang Tiger Reserve, declared in 2016, which grew out of the Orang wildlife sanctuary and protects the grasslands and riverine forests of the Orang area. The fourth and newest is the Dehing-Patkai Tiger Reserve, declared in 2020, spread across Tinsukia and Dibrugarh districts in the far east of Assam.
Dehing-Patkai: the rainforest reserve
Dehing-Patkai is special because it protects a lowland tropical evergreen rainforest, a habitat that is now rare in India. The region forms part of the Indo-Burma biodiversity hotspot and is home to the tiger, the elephant and the hoolock gibbon. It is also an important elephant corridor, connecting the forests of Assam with those of Arunachal Pradesh, and the Dehing and Patkai hills give the reserve its name. Because the rainforest here is dense and continuous, it supports a wider variety of species than the grassland parks, and it is often described as the green lung of upper Assam.
The Manas biosphere reserve
The Manas Biosphere Reserve was declared in 1989 and its core area is the Manas National Park. It covers about 2,837 square kilometres and extends beyond Assam into Arunachal Pradesh, which makes it a landscape-level reserve rather than a single park. The biosphere reserve protects the golden langur, the tiger, the elephant and many other species, and it is also part of the World Heritage Site that includes Manas National Park. The idea of a biosphere reserve is to balance protection with the needs of the people living around it, so that conservation and local livelihoods can continue side by side.
Project Tiger and the NTCA
Almost everything about tiger conservation in India traces back to Project Tiger, a national programme launched in 1973 to protect tigers and their habitats. It created the idea of a tiger reserve with a core area kept free of human activity and a buffer zone where limited use is allowed. To strengthen this work, the National Tiger Conservation Authority, or NTCA, was set up in 2005 as a statutory body to oversee the management of tiger reserves across the country. In Assam, Manas holds the highest priority under Project Tiger because of its size, its World Heritage status and its importance for the wider landscape.
Why this topic matters for competitive examinations
Examiners like this topic because it is full of dates and names that can be checked easily. The most common questions are the number of tiger reserves, the names of the four reserves, the year each was declared, the rivers linked with Manas and Nameri, the year the Manas biosphere reserve was declared, and the year Project Tiger and the NTCA were established. The Dehing-Patkai reserve is now a favourite because it is recent and because its rainforest and elephant corridor make it distinctive.
How to prepare this topic
- Memorise the four reserves and their years as a chain: Manas 1973-74, Nameri 2000, Orang 2016, Dehing-Patkai 2020.
- Link each reserve with its river or region - Manas with the Manas river, Nameri with the Jia-Bhoroli, Dehing-Patkai with Tinsukia and Dibrugarh.
- Fix the two national years: Project Tiger 1973 and NTCA 2005.
- Remember the Manas biosphere reserve with its year 1989, its core area and its shared boundary with Arunachal Pradesh.
- Note that Manas is the largest and highest-priority tiger reserve of Assam.
Common exam traps
- Assam has four tiger reserves, not three; Dehing-Patkai is often forgotten.
- Project Tiger started in 1973, while the NTCA was set up only in 2005.
- Nameri is linked with the Jia-Bhoroli or Kameng river, not with the Brahmaputra directly.
- The Manas biosphere reserve is a larger landscape whose core area is the Manas National Park, not the same thing as the park.
Frequently Asked Questions
Which are the four tiger reserves of Assam?
The four tiger reserves of Assam are Manas, Nameri, Orang and Dehing-Patkai. Manas was the first, brought under Project Tiger in 1973-74, followed by Nameri in 2000, Orang in 2016 and Dehing-Patkai in 2020. Together they protect a wide range of habitats, from the Manas river valley and the Jia-Bhoroli riverbanks to the grasslands of Orang and the rainforest of Dehing-Patkai.
What is Project Tiger and when did it begin?
Project Tiger is a national conservation programme launched in 1973 to protect tigers and their habitats in India. It introduced the model of a tiger reserve with a core area free of human activity and a buffer zone around it. The programme is now overseen by the National Tiger Conservation Authority, which was set up in 2005, and Manas was one of the earliest reserves to come under it in Assam.
Which is the only biosphere reserve in Assam and what is its core area?
The Manas Biosphere Reserve is the biosphere reserve associated with Assam. It was declared in 1989 and its core area is the Manas National Park. It covers about 2,837 square kilometres and extends into Arunachal Pradesh, so it protects an entire landscape rather than a single protected area, and it is also important for species such as the golden langur.
Why is Dehing-Patkai important for wildlife?
Dehing-Patkai, declared a tiger reserve in 2020, protects a lowland tropical evergreen rainforest in Tinsukia and Dibrugarh districts. This forest is part of the Indo-Burma biodiversity hotspot and is home to the tiger, the elephant and the hoolock gibbon. The reserve also forms an important elephant corridor linking the forests of Assam with those of Arunachal Pradesh, which makes it valuable well beyond its own boundaries.
Which rivers are associated with the Manas and Nameri tiger reserves?
The Manas Tiger Reserve is associated with the Manas river, which gives the reserve and the national park their name. The Nameri Tiger Reserve is associated with the Jia-Bhoroli, also called the Kameng, river, which flows along its boundary. Remembering these two pairs helps answer several one-line questions about the reserves and their geography.