The Sundarbans Tiger Reserve occupies the Indian portion of the world's largest contiguous mangrove forest, sprawling across the delta formed by the confluence of the Ganga, Brahmaputra and Meghna rivers in the South 24 Parganas district of West Bengal. Its legal genesis lies in Project Tiger, the centrally sponsored conservation programme launched by the Government of India on 1 April 1973; the Sundarbans was designated one of the nine inaugural tiger reserves that year. The statutory backbone for its protection is the Wild Life (Protection) Act, 1972, supplemented by the constitution of Sundarban National Park as a national park in 1984 and the earlier notification of a wildlife sanctuary. The reserve also embodies India's commitments under international conservation regimes, having been inscribed on the UNESCO World Heritage List in 1987 and designated a UNESCO Biosphere Reserve in 1989. In 2019 the Indian Sundarban Wetland was recognised as a Wetland of International Importance under the Ramsar Convention, the 27th such site in India at the time.
The administrative architecture of the reserve follows the core-buffer model mandated by Section 38V of the Wild Life (Protection) Act, as amended in 2006 following the recommendations of the Tiger Task Force. The reserve is governed by a Field Director under the West Bengal Forest Department, who reports operationally to the National Tiger Conservation Authority (NTCA), the statutory body created by the 2006 amendment that replaced the non-statutory Project Tiger steering arrangement. The reserve is partitioned into a critical tiger habitat (the inviolate core), which includes the Sundarban National Park, and a buffer zone where regulated human use is permitted. Management interventions include the maintenance of nylon fencing along village-facing forest edges to reduce tiger straying, freshwater pond excavation for prey species, and an extensive network of camps and floating watch posts patrolled by riverine boats rather than vehicles, since the terrain is intersected by tidal creeks.
Population estimation in the Sundarbans departs from the standardised camera-trap and pugmark methodology used in dryland reserves because the soft tidal mud destroys tracks and the dense halophytic vegetation limits visibility. The NTCA's quadrennial All India Tiger Estimation, conducted by the Wildlife Institute of India, deploys camera traps along forest paths and creek banks, with population figures for the Sundarbans reported in the 2018 and 2022 cycles. The mangrove tigers exhibit documented behavioural adaptations, including swimming between islands and a higher incidence of predation on humans than tigers elsewhere in India, a phenomenon attributed variously to salinity-induced irritability, scarcity of conventional prey, and habitual encounters with honey collectors and fishers entering the forest.
The contemporary management of the reserve is coordinated from the West Bengal Forest Department's directorate, with the reserve headquarters at Canning and field operations radiating across ranges such as Sajnekhali, Basirhat and the National Park ranges. The transboundary dimension is significant: the contiguous Bangladeshi Sundarbans, administered by the Bangladesh Forest Department, hosts its own tiger population, and a 2011 Memorandum of Understanding between New Delhi and Dhaka established a framework for joint conservation and anti-poaching cooperation across the shared ecosystem. The reserve's ecological services were starkly demonstrated when Cyclone Aila struck in 2009 and Cyclone Amphan in May 2020, the mangroves absorbing storm surge that would otherwise have devastated the densely populated mainland.
The Sundarbans Tiger Reserve must be distinguished from adjacent designations that overlap its geography. A tiger reserve is a management category under the Wild Life (Protection) Act administered through the NTCA, whereas a national park (Sundarban National Park) and a wildlife sanctuary (Sajnekhali) are separate protected-area categories that may lie within the reserve's boundary. The reserve is also distinct from the broader Sundarbans Biosphere Reserve, a UNESCO Man and the Biosphere designation that encompasses inhabited islands and human settlements outside the forest, and from the Ramsar wetland boundary, which is delineated for wetland-conservation purposes rather than tiger management. Confusing these categories misstates which authority and which legal instrument applies.
Controversies persist over the reserve's dual mandate to protect tigers and to govern a landscape inhabited by roughly four million people in the surrounding islands. Human-tiger conflict remains acute, with annual fatalities among prawn-seed collectors, fishers and the Mawalis who harvest wild honey under permit; compensation disbursement and the legal status of forest-dependent communities under the Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006 remain contested. Climate change compounds these pressures: rising sea levels, increasing salinity, and the documented submergence of islands such as Lohachara threaten to shrink tiger habitat and displace communities, generating the category of climate-displaced persons sometimes termed environmental refugees.
For the working practitioner, the Sundarbans Tiger Reserve is a case study in the intersection of biodiversity conservation, disaster-risk reduction and transboundary environmental diplomacy. Foreign-policy and civil-service professionals encounter it in the context of India-Bangladesh cooperation, India's reporting obligations under the World Heritage Convention and the Ramsar Convention, and domestic debates over forest rights and climate adaptation finance. UPSC General Studies Paper III treats it as a recurring node connecting conservation law, the NTCA's institutional design, and the ecology of mangrove systems, making fluency in its layered legal status essential for both examination and field administration.
Example
In May 2020 Cyclone Amphan made landfall across the Sundarbans, and West Bengal Forest Department officials credited the reserve's mangroves with absorbing the storm surge that shielded Kolkata's hinterland.
Frequently asked questions
It was established in 1973 as one of the nine original tiger reserves notified under Project Tiger, the conservation programme launched by the Government of India on 1 April 1973. Its protection rests on the Wild Life (Protection) Act, 1972.
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