Eco-Sensitive Zones (ESZ)

Eco-Sensitive Zones (ESZ), sometimes termed Ecologically Fragile Areas, are buffer or transition zones declared by the Government of India around protected areas to act as "shock absorbers" that insulate ecologically critical habitats from intensive human and industrial pressure. Their legal basis lies in the Environment (Protection) Act, 1986, principally Sections 3(2)(v) and 5, read with Rule 5(1) of the Environment (Protection) Rules, 1986, which empowers the central government to restrict industries, operations, and processes in areas on the basis of ecological sensitivity. The conceptual underpinning was crystallised in the National Wildlife Action Plan (2002–2016) and a Ministry of Environment and Forests communication of 2002 advising states that land within 10 kilometres of national park and wildlife sanctuary boundaries be declared as ESZ. The framework draws further force from the Wild Life (Protection) Act, 1972, which governs the protected areas the zones surround.

Procedurally, the designation of an ESZ proceeds through the Ministry of Environment, Forest and Climate Change (MoEFCC) on the basis of proposals originating from state governments. A state forest department prepares a proposal demarcating the proposed zone boundary, its extent in kilometres, and a list of permitted, regulated, and prohibited activities. This proposal is examined by the MoEFCC, which issues a draft notification inviting objections and suggestions from the public, ordinarily within a sixty-day window. After considering representations, the Ministry issues a final notification under the Environment (Protection) Act, fixing the zone's boundaries and the activity regime. Each ESZ notification mandates the preparation of a Zonal Master Plan within two years, drawn up by the state in consultation with local stakeholders and integrating tourism, agriculture, watershed, and land-use management.

The activity regime within an ESZ is tiered into three categories. Prohibited activities include commercial mining, stone quarrying and crushing, setting up of polluting industries, establishment of major hydroelectric projects, commercial use of firewood, and discharge of untreated effluents. Regulated activities, permitted subject to safeguards, encompass felling of trees, establishment of hotels and resorts, widening of roads, erection of electrical cables, and commercial extraction of groundwater. Permitted activities comprise ongoing agriculture and horticulture by local communities, rainwater harvesting, organic farming, use of renewable energy, and adoption of green technology. Oversight is exercised by a Monitoring Committee, generally chaired by the District Collector and including ecologists and local representatives, which reviews compliance with the Zonal Master Plan.

Contemporary practice has produced hundreds of notifications. The Matheran ESZ in Maharashtra, notified in 2003, was among the earliest and most cited examples, declared around the hill station to curb construction. The Mahabaleshwar–Panchgani ESZ followed in 2001. Around Delhi, debates over the Asola Bhatti Wildlife Sanctuary buffer have repeatedly engaged the MoEFCC. The Western Ghats received sustained attention through the Madhav Gadgil-led Western Ghats Ecology Expert Panel (2011) and the subsequent Kasturirangan Committee report (2013), which recommended that roughly 37 percent of the Ghats be treated as ecologically sensitive — recommendations contested by Kerala, Karnataka, and Maharashtra ministries through successive draft notifications into the 2020s.

ESZ must be distinguished from adjacent conservation instruments. They differ from a Critical Tiger Habitat or core-buffer division under the Project Tiger framework administered by the National Tiger Conservation Authority, which is internal to a tiger reserve rather than a peripheral buffer. They are distinct from a Biosphere Reserve, a UNESCO Man and the Biosphere designation with its own core, buffer, and transition architecture and no comparable statutory prohibition list. ESZ also differ from Coastal Regulation Zones, notified separately under the same parent Act but governing the shoreline, and from Eco-Sensitive Areas declared for entire landscapes such as the Western Ghats. Crucially, an ESZ does not extinguish private property rights within it; it regulates land use rather than acquiring land.

The most consequential recent development was the Supreme Court's judgment in T.N. Godavarman Thirumulpad v. Union of India of 3 June 2022, which directed that every protected area across India maintain a mandatory minimum ESZ of one kilometre from its demarcated boundary and barred permanent structures within it. The ruling provoked sustained objection from state governments and forest-fringe communities, particularly in Kerala, where densely populated settlements abut sanctuary boundaries, prompting protests in 2022–2023. On 26 April 2023 the Court modified its position, clarifying that the rigid one-kilometre rule would not apply uniformly where MoEFCC notifications already prescribed zone extents, restoring primacy to area-specific notifications. This sequence exposed the tension between blanket judicial standards and the heterogeneity of India's protected-area peripheries.

For the working practitioner — whether a UPSC aspirant addressing General Studies Paper III, a desk officer in a state forest department, or an environmental policy analyst — the ESZ regime exemplifies the operation of cooperative federalism and the precautionary principle within Indian environmental governance. It illustrates how a delegated power under a 1986 statute translates into granular land-use control, how judicial intervention reshapes administrative practice, and how conservation imperatives collide with livelihood and development claims at the forest fringe. Mastery of the notification process, the three-tier activity classification, and the 2022–2023 judicial sequence is indispensable to analysing contemporary debates over protected-area management in India.