Biosphere reserves are large protected areas of land and coast that conserve representative ecosystems while allowing sustainable use by local communities, designated nationally and many recognised internationally under UNESCO's Man and the Biosphere (MAB) Programme.
- A biosphere reserve has three zones: a core zone (strictly protected, no human activity), a buffer zone (limited research and tourism), and a transition or manipulation zone (where settlements and sustainable activities are allowed).
- India has eighteen designated biosphere reserves; the Nilgiri Biosphere Reserve (1986) was the first, spanning Tamil Nadu, Kerala, and Karnataka.
- Several Indian reserves are on UNESCO's World Network of Biosphere Reserves, including Nilgiri, Nanda Devi, Gulf of Mannar, Sundarban, Nokrek, Pachmarhi, Similipal, Achanakmar-Amarkantak, Great Nicobar, Agasthyamala, Khangchendzonga, and Panna.
- The aim combines conservation, sustainable development, and scientific research and education, unlike a national park, which is centred only on strict protection.
- The Ministry of Environment, Forest and Climate Change runs the national Biosphere Reserve programme.
The three-zone structure (core, buffer, transition), Nilgiri as the first, the UNESCO MAB link, and named Indian reserves are recurring environment and protected-area facts.
Biosphere reserve (multiple-use, zoned, large) versus national park (strict protection only); the core zone bars human activity while the transition zone allows it; UNESCO MAB recognition is separate from national designation. Verify the latest count.
Large zoned conservation areas (core, buffer, transition); Nilgiri was India's first, several are on UNESCO's MAB network.