India has 58 tiger reserves across 18 states. The All India Tiger Estimation 2022 recorded 3,167 tigers, a 6.74% increase from 2,967 in 2018, making India home to roughly 75% of the world's wild tiger population. UPSC has directly tested Project Tiger in Prelims 2018 and 2020, and tiger conservation is a permanent fixture in GS-III Mains questions.
I have taught this topic for over a decade, and students consistently underestimate how deeply UPSC goes into the institutional framework (NTCA, core-buffer model, Wildlife Protection Act amendments) beyond just memorizing reserve names.
Project Tiger: History and Evolution
Project Tiger was launched on April 1, 1973, by Prime Minister Indira Gandhi on the recommendation of a task force led by Kailash Sankhala (the "Tiger Man of India"). The initial push came after the 1972 census revealed India's tiger population had crashed to approximately 1,827 from an estimated 40,000 at independence.
The project started with 9 tiger reserves: Jim Corbett (Uttarakhand), Manas (Assam), Ranthambore (Rajasthan), Simlipal (Odisha), Bandipur (Karnataka), Palamau (Jharkhand), Sundarbans (West Bengal), Melghat (Maharashtra), and Kanha (Madhya Pradesh).
Key milestones:
- 1973: Project Tiger launched with 9 reserves covering 16,339 sq km
- 2005: Sariska crisis, all tigers found locally extinct due to poaching
- 2006: Wildlife Protection Act amended, NTCA and WCCB established
- 2008: Panna Tiger Reserve lost all tigers; successful reintroduction followed
- 2010: Global Tiger Summit in St. Petersburg, TX2 goal set (double tigers by 2022)
- 2018: 4th tiger census records 2,967 tigers
- 2022: 5th tiger census records 3,167 tigers. India nearly achieved the TX2 goal
- 2023-2025: Dholpur-Karauli, Ratapani and Madhav notified, bringing the total to 58
Common student mistake: Citing 1973 as the year of the Wildlife Protection Act. The Act was passed in 1972. Project Tiger was launched under this Act in 1973. These are two different events with two different years.
NTCA: The Institutional Backbone
The National Tiger Conservation Authority (NTCA) was established by the 2006 amendment to the Wildlife Protection Act, 1972, following the recommendations of the Tiger Task Force constituted after the Sariska crisis.
Structure: A statutory body under MoEFCC, chaired by the Minister of Environment. Includes 3 members of Parliament, the Secretary (MoEFCC), and 10 experts/conservationists.
Key powers of NTCA:
- Approve tiger conservation plans for each reserve
- Evaluate and assess the management of tiger reserves
- Notify Critical Tiger Habitats (CTH) within core areas
- Order state governments to take action against violations
- Facilitate tiger reintroduction programs
Wildlife Crime Control Bureau (WCCB) was established alongside NTCA in 2006 to combat organized wildlife crime, including tiger poaching and illegal trade.
Tiger Census: Methodology and Results
India conducts the world’s largest wildlife survey. The All India Tiger Estimation uses a rigorous double-sampling framework developed by the Wildlife Institute of India (WII), Dehradun.
Methodology
Phase 1: Beat-level monitoring by forest staff using sign surveys (pugmarks, scat, scratch marks). Covers all tiger-bearing forests.
Phase 2: Camera trapping across 26,838 locations (2022 census). Individual tigers are identified through unique stripe patterns using software. The M-STrIPES (Monitoring System for Tigers – Intensive Protection and Ecological Status) app enables real-time data collection by field staff.
Phase 3: Statistical analysis using spatially explicit capture-recapture (SECR) models, occupancy modeling, and prey density estimation.
All India Tiger Estimation 2022: Key Findings
| Parameter | 2006 | 2010 | 2014 | 2018 | 2022 |
|---|---|---|---|---|---|
| Tiger population | 1,411 | 1,706 | 2,226 | 2,967 | 3,167 |
| Growth rate | Baseline | 21% | 30% | 33% | 6.74% |
| Camera trap locations | 5,000+ | 8,000+ | 9,735 | 26,838 | 26,838 |
| Area surveyed (sq km) | 28,000 | 82,000 | 378,118 | 381,400 | 381,400+ |
The slowdown from 33% to 6.74% between 2018 and 2022 is significant. Scientists attribute this to populations approaching carrying capacity in well-managed reserves. Some reserves like Corbett and Bandipur are near saturation, forcing tigers into corridors and fringe areas.
State-wise Tiger Distribution
Madhya Pradesh leads India with 785 tigers (2022), followed by Karnataka (563), Uttarakhand (560), and Maharashtra (444). These four states together hold over 74% of India's tigers.
| Rank | State | Tiger Population (2022) | Major Reserves |
|---|---|---|---|
| 1 | Madhya Pradesh | 785 | Kanha, Bandhavgarh, Panna, Pench, Satpura |
| 2 | Karnataka | 563 | Bandipur, Nagarahole, BRT Hills, Bhadra |
| 3 | Uttarakhand | 560 | Corbett, Rajaji |
| 4 | Maharashtra | 444 | Tadoba, Melghat, Pench, Sahyadri |
| 5 | Tamil Nadu | 264 | Mudumalai, Anamalai, Kalakad-Mundanthurai |
| 6 | Assam | 194 | Kaziranga, Manas, Nameri |
| 7 | Kerala | 190 | Periyar, Parambikulam |
| 8 | Rajasthan | 88 | Ranthambore, Sariska, Mukundra Hills |
| 9 | Odisha | 30 | Simlipal, Satkosia |
| 10 | Chhattisgarh | 17 | Indravati, Achanakmar, Udanti-Sitanadi |
Several northeastern states and Jharkhand have tiger populations in single digits. Buxa Tiger Reserve (West Bengal) and Palamu Tiger Reserve (Jharkhand) have critically low or unconfirmed tiger presence.
Top 10 Tiger Reserves by Population
| Rank | Tiger Reserve | State | Tigers (2022 est.) |
|---|---|---|---|
| 1 | Jim Corbett | Uttarakhand | 260 |
| 2 | Bandipur | Karnataka | 150 |
| 3 | Nagarahole | Karnataka | 141 |
| 4 | Bandhavgarh | Madhya Pradesh | 135 |
| 5 | Dudhwa | Uttar Pradesh | 135 |
| 6 | Mudumalai | Tamil Nadu | 114 |
| 7 | Kanha | Madhya Pradesh | 105 |
| 8 | Kaziranga | Assam | 104 |
| 9 | Tadoba-Andhari | Maharashtra | 97 |
| 10 | Pench (MP) | Madhya Pradesh | 77 |
Jim Corbett alone holds more tigers than most countries. The Nilgiri landscape (Bandipur + Nagarahole + Mudumalai + Wayanad) functions as a single tiger population of over 400 tigers, making it the largest contiguous tiger population in the world. For more on this landscape, see our guide on national parks in India.
Core-Buffer Model and Critical Tiger Habitats
The 2006 amendment mandated a core-buffer strategy for all tiger reserves:
Core/Critical Tiger Habitat: Inviolate area where no human activity is permitted. Identified based on scientific evidence of tiger breeding and habitat use. The rights of forest-dwelling Scheduled Tribes are recognized, and voluntary relocation with rehabilitation packages is provided.
Buffer Zone: Multi-use area around the core where coexistence-oriented land use is promoted. Limited forestry operations, ecotourism, and community resource use are permitted under the tiger conservation plan.
This model directly connects to questions about forest conservation in India and the Forest Rights Act (2006) versus wildlife protection debates.
Tiger Corridors
Tiger corridors are strips of forest connecting separate tiger populations, enabling genetic exchange and dispersal. Without corridors, isolated populations face inbreeding depression and local extinction.
Critical corridors identified by WII and NTCA include:
- Kanha-Pench corridor (Madhya Pradesh): One of the most functional corridors
- Corbett-Rajaji corridor (Uttarakhand): Threatened by Haridwar-Rishikesh urbanization
- Bandipur-Nagarahole corridor (Karnataka): Bisected by NH-766
- Simlipal-Satkosia corridor (Odisha): Heavily degraded, needs restoration
India has identified 32 major tiger corridors. Linear infrastructure (highways, railways) and mining are the biggest threats. The Supreme Court's 2012 order banning tourism in core zones (later modified) highlighted the tension between conservation and economic activity.
International Cooperation
Global Tiger Initiative (GTI): Launched in 2008 by the World Bank. Brought together 13 tiger range countries.
St. Petersburg Declaration (2010): All 13 tiger range countries committed to TX2, doubling wild tiger numbers by 2022. Global tiger population was estimated at 3,200 in 2010 and reached approximately 4,500 by 2022.
Global Tiger Recovery Program (GTRP) 2.0: Adopted at the Vladivostok Tiger Summit in 2022 for the period 2023-2034. Focus shifted from population recovery to landscape-level conservation and anti-poaching technology.
India's success is the backbone of global tiger recovery. Without India's 3,167 tigers, the global TX2 target would have been a failure.
Largest and Smallest Tiger Reserves
Largest: Nagarjunasagar-Srisailam Tiger Reserve (Andhra Pradesh/Telangana) at approximately 3,296 sq km. Despite its size, tiger density is low due to challenging terrain and historical disturbance.
Smallest: Buxa Tiger Reserve (West Bengal) at approximately 760 sq km. It has virtually no confirmed tiger presence currently and represents a cautionary tale about habitat degradation within a "protected" area.
The newest reserves are Dholpur-Karauli (Rajasthan, 2023), Ratapani (Madhya Pradesh, notified December 2024 as the 57th), and Madhav (Madhya Pradesh, notified March 2025 as the 58th, reconnecting the corridor between Ranthambore and central India).
Challenges and Threats
Human-tiger conflict is intensifying as tiger populations expand beyond saturated reserves. Between 2019 and 2023, over 400 human deaths were attributed to tiger attacks across India. Retaliatory killings and poisoning remain serious threats.
Poaching has decreased but not disappeared. WCCB data shows tiger seizures (skins, bones, claws) continue, with organized networks operating across borders.
Habitat fragmentation from highways, railways, and mining is the structural threat. India's infrastructure expansion under Bharatmala and Sagarmala projects intersects with multiple tiger corridors.
Climate change is altering prey availability and habitat suitability. The Sundarbans tigers face existential risk from sea-level rise, as discussed in our disaster management section. Read more about how India is aligning conservation with sustainable development goals.
UPSC Relevance
Prelims: Project Tiger launch year (1973), NTCA establishment (2006 amendment), latest tiger census figure (3,167 in 2022), state with most tigers (Madhya Pradesh), largest tiger reserve (Nagarjunasagar-Srisailam). Prelims 2018 asked about NTCA's powers; Prelims 2020 tested the core-buffer concept.
Mains (GS-III): "Evaluate the success of Project Tiger in the last 50 years. What challenges remain?" Expect this in 2026, the year after the 50th anniversary analysis cycle. Tiger corridor protection, human-wildlife conflict, and the Forest Rights Act debate are all Mains-worthy themes.
Essay: The tiger-conservation narrative offers rich material for essays on development vs. environment, governance, and India's global environmental leadership.
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