Concerns mount over Delhi Ridge plan as experts warn of ecological damage

April 26, 2026

A proposal to develop themed zones within Delhi’s Central Ridge has drawn criticism from environmental experts, who caution that the project may damage one of the city’s last remaining natural forest areas.

In March, the Delhi government’s Forest and Wildlife Department issued a tender to create four themed forests within the Ridge, based on religious and seasonal concepts. The project, valued at over Rs 5 crore, initially included provisions for the use of pesticides such as lindane and chlorpyrifos.

These chemicals raised alarm among experts. Lindane is largely banned in India and recognised globally as a hazardous pollutant, while chlorpyrifos has been linked to environmental and health concerns, including harm to soil organisms and aquatic life.
After public backlash and media scrutiny, the department removed the pesticide clause in April, stating that eco friendly alternatives would be adopted. However, critics say the broader plan still threatens the ecological integrity of the area.Environmentalists note that termites, which were targeted in the original plan, play an essential role in forest ecosystems by aiding decomposition, improving soil quality and supporting nutrient cycles. Their removal could disrupt the natural balance.Experts have also questioned the idea of themed forests, arguing that such projects focus more on beautification and infrastructure than conservation. The plan includes planting selected species and adding facilities such as lighting, pathways and signage.

The Central Ridge, part of the Aravalli range, is a critical green zone for Delhi, helping maintain biodiversity and improve air quality. Specialists stress that such ecosystems require protection and natural regeneration rather than heavy intervention.They warn that turning a natural forest into a managed public space could weaken its ecological value and have long term environmental consequences.