Tholkappia Poonga
Tholkappia Poonga
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Tholkappia Poonga

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Tholkappia Poonga

Tholkappia Poonga or Adyar Eco Park (also known as Adyar Poonga) is an ecological park set up by the Government of Tamil Nadu in the Adyar estuary area of Chennai, India. According to the government, the project, conceived based on the master plan for the restoration of the vegetation of the freshwater ecosystems of the Coromandel Coast, especially the fragile ecosystem of the Adyar estuary and creek, was expected to cost around 1,000 million which will include the beautification of 358 acres (1.45 square kilometres) of land. The park's ecosystem consists of tropical dense evergreen forest, predominantly comprising trees and shrubs that have thick dark green foliage throughout the year, with over 160 woody species, and comprises six vegetative elements such as trees, shrubs, lianas, epiphytes, herbs and tuberous species. The park was opened to public by Chief Minister M. Karunanidhi on 22 January 2011 and named after the renowned Tamil scholar Tholkappiar. About 65 percent of the park is covered by water and artefacts and signages. In the first 2 months of its inauguration, nearly 4,000 children from several schools in the city and the nearby Kancheepuram and Tiruvallur districts have visited the park to learn about wetland conservation, eco-restoration and water management. While the first phase of the ecopark covered about 4.16 acres of CRZ-III area, the entire area covered under the second phase falls under this category.

The Adyar river originates from Malaipattu tank near Manimangalam village in Sriperumbudur Taluk at about 15 km west of Tambaram and gains momentum as a stream from Chembarambakkam lake. It runs through Chennai for 42 km before draining into the Bay of Bengal, forming an estuary, which extends from the Adyar Bridge to the sandbar at the edge of the sea, with some small islets in-between. Just before joining the sea at a sand bar on the shore, one part of the river takes off northward beyond the Chettinad Palace as a small inlet of water forming a tidal creek. The creek takes a U-turn near Foreshore Estate. It surrounds what was formerly called Quibble Island, stopping short of completely encircling it. The estuary covers an area of about 300 acres. The low salinity, good shelters, calm conditions and high plankton availability in the creek serves as a good nursery for fish. The flow of tidal water in and out of the creek allowed for easy travel of boats. It therefore encouraged fishing and there was a thriving economy of fish trade here. However, with the city's sewage and effluence from its various industries, for some time, emptying into the river, the biological activities in the region was affected.

The Adyar wetland reserve is a significant link for birds on their great annual migrations, particularly the wading birds which feed on the coastal mudflats. Historically, approximately 200 species of migratory birds visited the Adyar Creek region but many are now on the endangered IUCN Red List. The restoration of this coastal wetland ecosystem will encourage many of these species to return.

An estimated not more than 500 acres of undisturbed tropical dry evergreen forest remains in Tamil Nadu and the eco-park, aiming at the restoration of more than 350 acres, serves as a significant conservation effort to bring this vegetation back to the Coromandel coast. Owing to uncontrolled exploitation of the wetland due to urbanisation, the region became a degraded area by the end of the 20th century. When the Ambedkar Memorial was constructed, the damage to the ecosystem was challenged by the Citizen, consumer and civil Action Group (CAG) in the court. In 2000, the High Court directed the state government to preserve the wetlands. On 22 December 2003, the State Government handed over 58 acres of the area to the Corporation of Chennai to develop it into an eco park modelled on Parque Texozomoc of Mexico. The eco-park was conceptualised by M. P. Vijayakumar, the then commissioner of the Chennai Corporation, in 2004. The budget of 600 million for creating the park was passed in 2005 and Adyar Creek Eco Park Limited, a special purpose vehicle, was set up to harness and channel the funds for development. In a bid to take up ecological restoration of the Adyar estuary, the Tamil Nadu Government constituted the Adyar Poonga Trust in October 2006. The Trust was set up with the Chief Secretary as the chairman and Secretaries of Highways, Forests, Fisheries, Municipal Administration & Water Supply, and Finance as members. However, the CAG was never made part of the body. The work of preparing an ecological restoration plan was entrusted with Pitchandikulam Forest Consultants of Auroville in February 2007. The ecological restoration aimed at an eco-park that will be a showcase ecosystem of the Coromandel Coast with fresh water ponds, brackish areas, mangroves, mud flats, dunes, and islands.

The improvement did not begin until clearance in June 2004. Once completed, it is claimed to become the first eco-tourism venture in the state. A major portion of the boundary wall for the park was built by the Chennai Corporation in 2006 at a cost of 15 million, while the remaining improvements could not be carried out owing to encroachments on the land. The area before restoration used to be a filthy place, with debris strewn around. Cattle was being reared by neighbouring slum dwellers and antisocials made merry in the area that was full of thickets. Initial assessment of the creek area was, in fact, done from the nearby high-rise structures because no one could enter the park. Following action by the civic body, the squatters of Rajah Gramani Thottam were removed and allotted to Slum Clearance Board tenements in Semmencherry in early July 2007. The issue was also taken up by the members of the Corporation Council. As a result, the remaining portion of compound wall was made higher.

Tamil Nadu Urban Infrastructure Financial Services Limited has been charged with engaging consultants to develop a master plan and invite bidders for development of the park. The Adyar Creek Trust has been set up by the government of Tamil Nadu to co-ordinate the execution of the project. The Adyar Poonga Trust has been rechristened as Chennai Rivers Restoration Trust (CRRT). The Chief Secretary to the Government of Tamil Nadu is the chairman for the trust and the secretaries in the Finance Department, Municipal Administration and Water Supplies, Highways Department, Public Works Department, Environment and Forest Department, and the Commissioner, Corporation of Chennai are the trustees.

M. Karunanidhi, the then chief minister of Tamil Nadu, laid the foundation stone for the project in August 2007.

Pitchandikulam Forest Consultants are the lead consultants in the ecological restoration of 58-acres of the Adyar Creek estuary. As part of the master plan for the restoration of the creek area, a 40-m causeway connecting Karpagam Avenue near Greenways Road with Mandaveli was demolished and was replaced by a wooden bridge 40-m long and 3-m wide. Along South Canal Bank Road, a mangrove forest has been created, as the soil is well suited for such growth. In the first phase of the ecological restoration plan which covers 58 acres costing 230 million, more than 91,280 varieties of saplings of 172 endemic species of trees, herbs, shrubs, reeds and tuberous plants were planted to serve as habitat for aquatic, terrestrial and arboreal species, chiefly at locations such as the entrance plaza, swale area near Town Planning Scheme Road, the rear side of Ambedkar Manimandapam and along Santhome entrance plaza, lakes were desilted, and a play area for children was created. About 37,600 reeds have been planted along the water margins.

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