BharatNotes What is Biosphere Reserve Zonation?
Biosphere Reserve Zonation is the spatial planning system that divides a biosphere reserve into three concentric, inter-related zones — core, buffer and transition — so that strict conservation, scientific research and sustainable development can coexist within one landscape. Conceived under UNESCO's Man and the Biosphere (MAB) Programme (launched November 1971; first reserves designated 1976), the model was given its modern statutory shape by the Seville Strategy and Statutory Framework of 1995.
The zonation directly delivers the three functions every biosphere reserve must perform: conservation (of ecosystems, species and genetic diversity), development (sustainable, socio-culturally appropriate economic activity) and logistic support (research, monitoring, education and training).
The Three Zones
| Zone | Legal/management status | Activities permitted |
|---|---|---|
| Core zone | Strictly and legally protected (usually a National Park or Wildlife Sanctuary); minimal human disturbance | Only non-destructive research and monitoring; serves as a genetic reservoir and undisturbed ecosystem |
| Buffer zone | Surrounds or adjoins the core; activities managed to reinforce core protection | Research, environmental education, eco-tourism, and traditional/sustainable resource use such as regulated grazing |
| Transition zone | Outermost area, usually not rigidly delimited; a "zone of cooperation" | Settlements, agriculture, forestry and other livelihoods managed in harmony with conservation goals, with active community participation |
A key exam point: only the core zone enjoys statutory legal protection; the buffer and transition zones rely on cooperative, participatory management rather than strict legal demarcation.
Significance
Unlike a National Park or Tiger Reserve, a biosphere reserve does not exclude people — its zonation deliberately integrates resident communities into the outer zones, making it a model of people-centric, participatory conservation. The graded intensity of use, from the inviolate core outward, allows biodiversity protection without displacing traditional livelihoods, and provides a living laboratory for long-term ecological monitoring.
Current Status (as of 2025)
In India the scheme is run by the MoEFCC's Biosphere Reserves Division, with State governments preparing Management Action Plans approved by the Central MAB Committee. India has 18 notified biosphere reserves, the first being the Nilgiri Biosphere Reserve (notified 1986). Of these, 13 are inscribed in UNESCO's World Network of Biosphere Reserves, the most recent being the Cold Desert Biosphere Reserve, Himachal Pradesh (designated 27 September 2025) at the 5th World Congress of Biosphere Reserves in Hangzhou, China. Globally, the World Network comprised 785 sites across 142 countries following the September 2025 expansion (UNESCO, Sep 2025).
UPSC Angle
Prelims questions typically probe which activities are allowed in each zone and the legal status of the core, so master the table above. For Mains GS3, use zonation to argue how India balances conservation with the rights and livelihoods of forest-dwelling communities — linking it to the broader protected-area network and the MAB Programme's conservation-development-logistic triad.
