Introduction
Nilgiri Biosphere Reserve is the first biosphere reserve established in India. It is one of the most important protected landscapes of the Western Ghats and is internationally recognized under UNESCO’s Man and the Biosphere Programme. UNESCO lists it in the World Network of Biosphere Reserves with an area of 552,000 hectares, that is 5,520 sq km, and notes its global importance as part of the tropical forest biome at the meeting point of major biogeographic influences.
Location and extent
The reserve lies at the junction of the Western Ghats and Eastern Ghats and extends across Tamil Nadu, Kerala, and Karnataka. This tri-state spread is one of its defining features. UNESCO and official Indian sources describe it as a major biodiversity-rich landscape of peninsular India.
Key location points:
• Spread across Tamil Nadu, Kerala, and Karnataka
• Part of the Western Ghats biodiversity hotspot
• Situated at the meeting zone of the Eastern and Western Ghats
• UNESCO area listed as 5,520 sq km
History and recognition
Nilgiri Biosphere Reserve was established in 1986 as India’s first biosphere reserve. It was later included in UNESCO’s World Network of Biosphere Reserves in 2000. This gives it both national and international conservation significance.
Ecological importance
Nilgiri Biosphere Reserve is famous for exceptional biodiversity, high endemism, and varied ecosystems ranging from evergreen forests and moist deciduous forests to montane grasslands and shola ecosystems. UNESCO notes that it is home to around 3,500 species of flowering plants, with a very high level of endemism in the Western Ghats context. It also supports iconic mammals such as the Asian elephant, Bengal tiger, lion-tailed macaque, Nilgiri tahr, and Nilgiri langur.
Its importance lies in:
• being part of the Western Ghats hotspot
• supporting rich endemism and speciation
• conserving important flagship species
• linking multiple protected areas into one ecological landscape
Protected areas within the reserve
The Nilgiri Biosphere Reserve includes several major protected areas of South India. These include well-known national parks, wildlife sanctuaries, and tiger reserves spread across the three states. Important protected areas associated with the Nilgiri landscape include:
• Mudumalai Tiger Reserve
• Bandipur Tiger Reserve
• Nagarhole National Park / Tiger Reserve
• Wayanad Wildlife Sanctuary
• Silent Valley National Park
• Mukurthi National Park
Why it is important
Nilgiri Biosphere Reserve is important because it is not just a protected forest area but a large ecological landscape that combines conservation, sustainable development, and research. It is one of the best examples in India of the biosphere reserve approach, where biodiversity protection is combined with human-environment interaction under the UNESCO MAB framework.
