India operates 106 national parks and 573 wildlife sanctuaries spanning 165,000 square kilometers, approximately five percent of national territory. These lands shelter 403 mammal species, 1,301 bird species, 563 reptile species, 460 amphibian species, and over 45,000 documented plant species. The national park system expanded from five protected areas in 1970 to the current count through successive Wildlife Protection Acts passed in 1972, 1991, and 2002. Project Tiger, launched in 1973 with nine reserves covering 16,339 square kilometers, now encompasses 53 reserves spanning 75,000 square kilometers across 18 states.
The Bengal tiger population reached 3,682 individuals in the 2022 census conducted by the National Tiger Conservation Authority, up from 1,411 in 2006. Kaziranga National Park in Assam holds 2,613 greater one-horned rhinoceros as counted in the March 2022 census, representing two-thirds of the global population of this species. The park's 430 square kilometers of floodplain grassland along the Brahmaputra River also supports 1,940 wild water buffalo, 1,311 Asian elephants, and 121 Bengal tigers recorded in the same enumeration. Kaziranga became a UNESCO World Heritage Site in 1985 based on criteria covering threatened species habitat.
Gir National Park and Wildlife Sanctuary in Gujarat encompasses 1,412 square kilometers of dry deciduous forest and is the sole remaining habitat of the Asiatic lion. The 2020 census recorded 674 lions within the protected area, up from 411 in 2010. The population increase prompted the National Board for Wildlife to approve translocation of individuals to Kuno National Park in Madhya Pradesh, but legal challenges from the Gujarat state government have delayed implementation since 2013. Gir's ecosystem also sustains 2,000 spotted deer, 1,800 sambar deer, 1,000 nilgai, and 300 wild boar counted during the same survey period.
The Western Ghats mountain range extends 1,600 kilometers along the western coast from Gujarat through Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu, containing 39 separate protected areas designated as a UNESCO World Heritage Site in 2012. The range holds 325 globally threatened species including 129 endemic to this region. Silent Valley National Park in Kerala protects 237 square kilometers of tropical evergreen forest harboring 1,000 flowering plant species, 110 orchid species, 200 bird species including the Nilgiri wood pigeon, and the lion-tailed macaque population of 355 individuals documented in 2018. Periyar National Park spans 925 square kilometers across Kerala and Tamil Nadu with 62 identified mammal species including 900 to 1,000 elephants tracked through camera trap data collected between 2017 and 2019.
Sundarbans National Park occupies 1,330 square kilometers of mangrove forest in the Ganges-Brahmaputra Delta where tidal waterways create 102 islands. The 2018 camera trap survey identified 96 Bengal tigers in the Indian portion of the Sundarbans, while the entire delta spanning into Bangladesh holds approximately 260 tigers. The mangrove ecosystem comprises 28 plant species including Heritiera fomes, Excoecaria agallocha, and Ceriops decandra adapted to salinity levels reaching 30 parts per thousand during dry months. The forest supports 260 bird species including the critically endangered masked finfoot and 35 reptile species including saltwater crocodiles reaching 6 meters in length.
Jim Corbett National Park in Uttarakhand, established in 1936 as Hailey National Park, was the first designated national park and became the inaugural Project Tiger reserve in 1973. The park's 1,318 square kilometers stretch from the Himalayan foothills at 385 meters elevation to ridges at 1,220 meters. The 2018 tiger census recorded 231 individuals within Corbett, the highest density among Project Tiger sites. Elephant populations migrate seasonally between Corbett and adjoining Rajaji National Park through the Chilla-Motichur corridor, with 1,500 elephants using this route during documented crossings in 2019.
Hemis National Park in Ladakh covers 4,400 square kilometers between 3,000 and 6,000 meters elevation, making it the largest national park by area. The park shelters 200 snow leopards according to camera trap studies completed in 2020, representing approximately 10 percent of the estimated global population of 2,000 to 2,500 individuals. The high-altitude ecosystem supports 16 mammal species including Tibetan wolf, Eurasian brown bear, Tibetan argali with horn spans exceeding 1 meter, and bharal numbering 2,500 individuals counted in 2019. Plant coverage remains sparse with 15 species documented including Juniperus species and Artemisia maritima adapted to precipitation levels below 100 millimeters annually.
Keoladeo National Park in Rajasthan encompasses 29 square kilometers of wetland artificially created in the 1850s through damming and flooding for the Maharaja of Bharatpur's waterfowl hunts. The park became a national park in 1982 and a UNESCO World Heritage Site in 1985. The 2020 bird census recorded 373 species including 50,000 to 80,000 individuals during peak winter migration when Siberian crane, greater spotted eagle, and Dalmatian pelican arrive from breeding grounds north of the Himalayas. The water regime depends on monsoon flooding and releases from the Ajan Dam, with dry years reducing water coverage from the typical 10 square kilometers to less than 1 square kilometer as occurred in 2014.
The Great Himalayan National Park in Himachal Pradesh spans 754 square kilometers at elevations from 1,500 to 6,000 meters, inscribed as a UNESCO World Heritage Site in 2014. The park's vegetation transitions through subtropical pine forest, temperate oak and cedar forest, subalpine birch and rhododendron, and alpine meadow zones. The ecosystem supports western tragopan pheasant, Himalayan monal pheasant with populations estimated at 500 breeding pairs, 31 mammal species including Himalayan brown bear, and 209 bird species. The Tirthan and Sainj river valleys within the park have recorded 125 medicinal plant species used in Ayurvedic and Unani systems.
Nagarhole National Park and Bandipur National Park together form a 1,270 square kilometer protected landscape in Karnataka part of the larger Nilgiri Biosphere Reserve spanning 5,520 square kilometers. The 2018 camera trap survey identified 724 Asian elephants, 142 tigers, 515 gaur, and 3,800 spotted deer within this connected area. The dry deciduous and moist deciduous forests contain teak, rosewood, sandalwood, and 96 tree species inventoried between 2015 and 2017. The Kabini River creates seasonal flooding that concentrates wildlife near water sources during the dry months from January through May.
Manas National Park in Assam occupies 950 square kilometers along the Manas River where it descends from Bhutan's Royal Manas National Park. The park regained its UNESCO World Heritage status in 2011 after being placed on the endangered list from 1992 to 2011 due to civil conflict impacts. The 2020 census recorded 46 tigers, 1,600 wild water buffalo, 55 elephants, and 432 pygmy hogs. The grassland and forest mosaic contains 543 plant species including 89 tree species, with fire management maintaining the grassland extent at approximately 200 square kilometers.
Valley of Flowers National Park in Uttarakhand covers 87 square kilometers at elevations from 3,200 to 6,675 meters, designated a UNESCO World Heritage Site in 2005 jointly with Nanda Devi National Park. The alpine meadows bloom from July through September with 520 documented flowering plant species including 13 not found elsewhere. The park supports snow leopard, Himalayan musk deer harvested historically for musk pods weighing 15 to 25 grams each, Himalayan black bear, and 114 bird species. Access remains limited to 500 visitors per day during the three-month window when snowmelt permits entry.
Pench National Park spans 758 square kilometers across Madhya Pradesh and Maharashtra, identified as the geographic setting for Rudyard Kipling's 1894 work The Jungle Book based on Kipling's visits to the region. The 2018 tiger census counted 85 individuals within the park boundaries. The forest composition includes 1,200 plant species with teak comprising 60 percent of tree coverage. The Pench River runs 50 kilometers through the park, creating riparian corridors where 285 bird species have been recorded including Malabar pied hornbill and Indian pitta.
Bandhavgarh National Park in Madhya Pradesh covers 446 square kilometers and historically held the highest tiger density among protected areas, reaching 72 individuals in 2014. The population declined to 65 in 2018 following territorial conflicts and dispersal to adjacent forest areas. The park's Bandhavgarh Fort occupies a plateau at 811 meters elevation with stone inscriptions dating to the first century BCE. The forest contains sal trees at densities exceeding 300 stems per hectare, bamboo thickets covering 150 square kilometers, and grasslands supporting 37 mammal species including sloth bear and leopard populations estimated at 70 individuals.
Kanha National Park spans 940 square kilometers in Madhya Pradesh and served as a model for Project Tiger's conservation protocols developed in the 1970s. The park shelters the hard-ground barasingha subspecies of swamp deer, with the population recovering from 66 individuals in 1970 to 804 counted in 2021. The 2018 census recorded 105 tigers within park boundaries. The central meadow known as Kanha Meadow covers 29 square kilometers of grassland maintained through prescribed burning conducted biennially. The park's elevations range from 450 to 900 meters across sal forest, mixed forest, and bamboo forest zones.
Ranthambore National Park in Rajasthan encompasses 392 square kilometers of dry deciduous forest at the junction of the Aravalli Range and Vindhya Range. The park's 88 tigers counted in 2022 include individuals habituated to tourism vehicles, making Ranthambore the most accessible location for tiger observation. The tenth-century Ranthambore Fort occupies a ridge within the park boundaries. Three lakes covering a combined 12 square kilometers provide year-round water sources that concentrate wildlife during the dry season from March through June. The park records 272 bird species including painted sandgrouse, Indian gray hornbill, and crested serpent eagle.
Nanda Devi National Park protects 630 square kilometers around Nanda Devi peak at 7,816 meters, the second-highest mountain entirely within the country. The park closed to tourists in 1983 to prevent ecological degradation from mountaineering expeditions, with access restricted to research teams holding permits from the Ministry of Environment. The ecosystem contains 312 flowering plant species including 17 considered rare, and 80 bird species including Himalayan snowcock and bearded vulture with wingspans reaching 2.8 meters.
The Andaman and Nicobar Islands encompass 8,249 square kilometers across 836 islands of which 31 are inhabited. The islands contain 96 wildlife sanctuaries and nine national parks protecting 11,000 square kilometers of tropical rainforest and marine ecosystems. Saddle Peak National Park on North Andaman Island covers 32 square kilometers with tree species including Dipterocarpus, Terminalia, and Pterocarpus reaching heights of 40 meters. The islands support 270 endemic bird species and subspecies including the Nicobar megapode and Andaman wood pigeon. Saltwater crocodile populations reach 1,700 individuals concentrated in mangrove creeks, and dugong populations estimated at 150 individuals graze seagrass beds around Little Andaman and Great Nicobar islands.
Project Elephant, initiated in 1992, covers 138,000 square kilometers across 32 elephant reserves in 14 states. The 2017 census counted 27,312 elephants, with 60 percent in southern states including Karnataka holding 6,049 individuals, Kerala with 3,054, and Tamil Nadu with 2,761. Human-elephant conflict incidents resulted in 2,361 human deaths and 500 elephant deaths between 2014 and 2019 according to data compiled by the Ministry of Environment. Elephant corridors identified through satellite tracking total 101 routes with lengths ranging from 2 to 200 kilometers, of which 32 corridors cross state boundaries requiring multi-state coordination for protection.
The gharial, a fish-eating crocodilian with narrow elongated jaws, declined from an estimated 10,000 individuals in 1946 to 182 breeding adults in 2006. The National Chambal Sanctuary spanning 635 kilometers of the Chambal River across Madhya Pradesh, Rajasthan, and Uttar Pradesh holds 1,500 gharials counted in 2022 following captive breeding programs that released 6,000 juveniles between 1979 and 2020. The sanctuary also protects 300 Ganges river dolphins, a freshwater species endemic to river systems in this region, counted through acoustic surveys in 2021.
The Indian rhinoceros population totals 3,262 individuals according to 2022 enumeration, with 92 percent in the state of Assam distributed across Kaziranga holding 2,613 individuals, Pobitora Wildlife Sanctuary with 107 in 38 square kilometers creating the highest density globally, and Orang National Park with 125 individuals. Jaldapara National Park in West Bengal shelters 292 rhinoceros in 216 square kilometers of grassland along the Torsa River. Poaching deaths declined from 37 rhinoceros in 2013 to two in 2021 following deployment of armed forest guards and installation of camera surveillance systems.
The hangul or Kashmir stag, a subspecies of red deer endemic to Kashmir, declined from 5,000 individuals in 1900 to 197 counted in 2019 within Dachigam National Park's 141 square kilometers. The population occupies high-elevation meadows between 2,400 and 3,400 meters where vegetation includes Poa, Festuca grasses, and willow browse. Conservation efforts include predator control targeting leopard populations and winter feeding programs providing 2,000 kilograms of supplemental fodder during heavy snow months.
The Great Indian Bustard, standing 1.2 meters tall and weighing up to 15 kilograms making it among the heaviest flying birds, numbered 150 individuals in 2021 with 128 in Rajasthan and 22 in Gujarat. The species requires large open grassland territories of 2 to 4 square kilometers per individual. Desert National Park in Rajasthan covers 3,162 square kilometers of sandy desert and scrubland where 87 bustards were counted in 2021. Collision with overhead power transmission lines causes 18 to 25 deaths annually, prompting the Supreme Court in 2021 to order power companies to install bird diverters on 10,000 kilometers of lines crossing bustard habitat.
Vulture populations crashed by 99 percent between 1992 and 2007 due to diclofenac, a veterinary pharmaceutical administered to livestock that causes fatal kidney failure in vultures feeding on carcasses. The white-rumped vulture declined from an estimated 40 million individuals in the 1980s to fewer than 10,000 by 2008. The government banned veterinary diclofenac in 2006 and established eight vulture safe zones totaling 25,000 square kilometers where veterinary pharmaceutical use is monitored. Captive breeding centers at Pinjore in Haryana, Bhopal in Madhya Pradesh, and Rani in Assam maintain 750 white-rumped, Indian, and slender-billed vultures, with releases beginning in 2020.
The Nilgiri tahr, a mountain ungulate endemic to the Western Ghats, numbers 3,122 individuals counted in 2015 across populations in Eravikulam National Park holding 855 individuals, Mukurthi National Park with 527, and Grass Hills National Park with 304. The species occupies montane grassland above 1,200 meters elevation where it grazes on 80 plant species including Chrysopogon, Arundinella grasses, and Gaultheria shrubs. Feral dog populations numbering up to 200 individuals in tahr habitat areas have caused predation mortality estimated at 15 to 20 tahr annually.