Due to rapid urbanization and human interference, the last remaining marshland of Chennai city, the Pallikaranai marshland, a unique ecosystem of its kind, has been reduced to one-third of its original extent. The marsh has been reduced and fragmented, due to construction of institutes, the adjacent Perungudi dump-yard and Sewage treatment plant, IT corridors, residential complexes. Pallikarnai Marshland is one of the most important wetlands in India. It is natural and unique in its hydrology. It is home to a large number of species of plants and animals. It is, however, under various kinds of threats; threats that are largely due to the rapidly changing surrounding urban landscape of Chennai. The threats are also due lack of awareness on the ecological value of natural wetlands. From this marshland stems the Okkiyam Lake which incidentally drains into the infamous Buckingham Canal, that runs parallel to the coast of Chennai. This canal was originally built to serve as a mode of transportation of trading goods along the East coast of Southern India. It is almost 800 km long and built during the British regime in the late 19th century. However, over the last 50 years, the canal has declined to nothing but stagnant, polluted water, flanked by slum developments. The goal of the project is to analyse the metropolitan complexity, stretching along these three points, Pallikarnai marshland- Okkiyam Lake- Buckingham Canal, and deliver a sensible wetland-urban project that can serve as a model which can be used at other sponge sites across the Chennai metropolitan area and across the nation. The project would aim to create a regional sponge by interconnecting the water bodies and green spaces, facilitating the recharge of ground water and preventing the frequent floods. The project deals with the various aspects of design such as sponge landscape strategizing, infrastructure planning, and landscape design of the same. Integrating these services and sites would be a key aspect in ensuring the holistic sustainability. The 3 main nodes of the project would act as tie points, providing a clear canvas of the area of intervention. This would then translate to a design that not only sustains itself but also adapts itself to changing climates, user groups and natural calamities.
A causa della rapida urbanizzazione e dell'interferenza umana, l'ultima palude rimasta della città di Chennai, la palude di Pallikaranai, un ecosistema unico nel suo genere, è stata ridotta a un terzo della sua estensione originale. La palude è stata ridotta e frammentata, a causa della costruzione di istituti, dell'adiacente discarica di Perungudi e dell'impianto di depurazione, corridoi informatici, complessi residenziali. La palude di Pallikarnai è una delle zone umide più importanti dell'India. È naturale e unico nella sua idrologia. Ospita un gran numero di specie di piante e animali. È, tuttavia, sotto vari tipi di minacce; minacce che sono in gran parte dovute al paesaggio urbano circostante di Chennai in rapida evoluzione. Le minacce sono dovute anche alla mancanza di consapevolezza sul valore ecologico delle zone umide naturali. Da questa palude nasce il Lago Okkiyam che tra l'altro sfocia nel famigerato Canale di Buckingham, che corre parallelo alla costa di Chennai. Questo canale è stato originariamente costruito per servire come mezzo di trasporto di merci commerciali lungo la costa orientale dell'India meridionale. È lungo quasi 800 km e costruito durante il regime britannico alla fine del XIX secolo. Tuttavia, negli ultimi 50 anni, il canale si è ridotto a nient'altro che acqua stagnante e inquinata, affiancata da insediamenti di baraccopoli. L'obiettivo del progetto è analizzare la complessità metropolitana, che si estende lungo questi tre punti, Pallikarnai palude-Okkiyam Lake-Buckingham Canal, e fornire un ragionevole progetto di zona umida-urbana che può fungere da modello che può essere utilizzato in altri siti di spugne in nell'area metropolitana di Chennai e in tutta la nazione. Il progetto mirerebbe a creare una spugna regionale interconnettendo i corpi idrici e gli spazi verdi, facilitando la ricarica delle acque sotterranee e prevenendo le frequenti alluvioni. Il progetto si occupa dei vari aspetti del design come la strategia del paesaggio in spugna, la pianificazione delle infrastrutture e la progettazione del paesaggio dello stesso. L'integrazione di questi servizi e siti sarebbe un aspetto chiave per garantire la sostenibilità olistica. I 3 nodi principali del progetto fungerebbero da punti di collegamento, fornendo un quadro chiaro dell'area di intervento. Ciò si tradurrebbe quindi in un design che non solo si autosostiene, ma si adatta anche ai cambiamenti climatici, ai gruppi di utenti e alle calamità naturali.
Study and evolution of sustainable landscape programme for flood and drought management in south Chennai
BEDFORD, NISHA ELIZABETH
2020/2021
Abstract
Due to rapid urbanization and human interference, the last remaining marshland of Chennai city, the Pallikaranai marshland, a unique ecosystem of its kind, has been reduced to one-third of its original extent. The marsh has been reduced and fragmented, due to construction of institutes, the adjacent Perungudi dump-yard and Sewage treatment plant, IT corridors, residential complexes. Pallikarnai Marshland is one of the most important wetlands in India. It is natural and unique in its hydrology. It is home to a large number of species of plants and animals. It is, however, under various kinds of threats; threats that are largely due to the rapidly changing surrounding urban landscape of Chennai. The threats are also due lack of awareness on the ecological value of natural wetlands. From this marshland stems the Okkiyam Lake which incidentally drains into the infamous Buckingham Canal, that runs parallel to the coast of Chennai. This canal was originally built to serve as a mode of transportation of trading goods along the East coast of Southern India. It is almost 800 km long and built during the British regime in the late 19th century. However, over the last 50 years, the canal has declined to nothing but stagnant, polluted water, flanked by slum developments. The goal of the project is to analyse the metropolitan complexity, stretching along these three points, Pallikarnai marshland- Okkiyam Lake- Buckingham Canal, and deliver a sensible wetland-urban project that can serve as a model which can be used at other sponge sites across the Chennai metropolitan area and across the nation. The project would aim to create a regional sponge by interconnecting the water bodies and green spaces, facilitating the recharge of ground water and preventing the frequent floods. The project deals with the various aspects of design such as sponge landscape strategizing, infrastructure planning, and landscape design of the same. Integrating these services and sites would be a key aspect in ensuring the holistic sustainability. The 3 main nodes of the project would act as tie points, providing a clear canvas of the area of intervention. This would then translate to a design that not only sustains itself but also adapts itself to changing climates, user groups and natural calamities.| File | Dimensione | Formato | |
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https://hdl.handle.net/10589/177394