Ecologically Sensitive Areas and Eco-Sensitive Zones

An Ecologically Sensitive Area (ESA) is a landscape identified for special environmental protection because of its ecological importance or vulnerability. An Eco-Sensitive Zone (ESZ) is a site-specific transition area notified around a national park, wildlife sanctuary or similar protected area to reduce external pressures. Both derive their operative restrictions from notifications under the Environment (Protection) Act, 1986, rather than from wholly separate statutory regimes.

Difference in spatial purpose

• An ESA may cover a large, ecologically significant landscape, such as a mountain system, forest tract or coastal region, even when it is not merely a belt around a protected area.
• An ESZ is primarily designed as a shock absorber and transition zone around a protected area, separating areas of stricter conservation from landscapes with human activity.
• ESZ width is site-specific, based on ecological and geographical conditions; it is not necessarily uniform around every protected area.

Difference in regulatory scope

The regulatory scope of either category is ultimately determined by its particular government notification, but their usual emphasis differs.

• ESA regulation can address landscape-scale threats by restricting specified activities such as highly polluting industries, mining, quarrying, major construction or other land-use changes across the notified region.
• ESZ regulation focuses on activities near protected areas. Activities are generally classified as prohibited, regulated or permissible, allowing ordinary local activity while controlling uses that may damage wildlife habitats.
• ESZ governance commonly includes a zonal master plan and a monitoring mechanism to align development, tourism and land use with conservation objectives.
• Neither designation automatically excludes settlements or all economic activity; the applicable notification specifies the boundaries, restrictions, safeguards and exemptions.

Legal and administrative basis

The Central Government may restrict the location and operation of industries or processes under Section 3 of the Environment (Protection) Act, 1986, read with Rule 5 of the Environment (Protection) Rules, 1986. Thus, ESA and ESZ are best distinguished by their geographical purpose and notification-specific controls, not as two rigid legal categories with universally fixed restrictions.

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