Shivalik-Gangetic plains Among the most important tiger ranges with a high density of 297 tigers over 5,177 sp km. Uttarakhand has 178 tigers, UP 109, Bihar 10 Total: 297 Highlight: The only demographically viable population in Northwestern India. The Corbett tiger reserve alone has an estimated population of 164 tigers spread over 1,524 sq km. The tiger census suggests a buffer zone of 1,000 sq km for Corbett. The tiger has become locally extinct in 29 per cent of the region's districts Potential tiger habitat: 20,800 km Challenges: The Dudhwa-Valmiki landscape is now connected only via Nepal forests, and needs to be managed through international cooperation with Nepal Central India landscape 451 tigers in 47,122 sq km Highlight: the Kanha- Pench landscape (3,880 sq km) with an estimated population of 121 tigers Tigers have become locally extinct from 30 per cent of the districts in the area Western Ghats landscape 366 tigers occupy 21,435 sq km of forests within the Western Ghats Potential tiger habitat: 51,000 sq km for tigers Highlight: The single largest population of tigers in India