Showing posts with label Ecosystem. Show all posts
Showing posts with label Ecosystem. Show all posts

Dec 20, 2011

Creating Ecological Infrastructure for a city

By – Anoop Jha

Urban green with radiating river canal as a sustainable urban planning model

River provides ample opportunities of growth but it appears that majority of cities have not taken advantage of this dormant potential, most of the cities throughout the world have not even been able to handle the issues related to river like recurring floods, water pollution etc. forget about the utilization of river potential for the benefit of city. Thriving lush green riverfront has become a luxury which very few cities have been able to afford till now while rest of the world seems either totally engrossed in solving other urban problems and internal issues or they are content doing beautification of Neighborhood Parks. Greener Neighborhood Park is a good idea in short term but not a sustainable environmental solution for city in long term.

Cities can trade in carbon credit but unfortunately cannot trade in quality of environment of a city. What they need to do is to create a tangible ecological infrastructure for a sustainable urban environment. For a river city it is very crucial to understand the need of exploiting the possible opportunities as well as tackling the grave problems of recurring flood and river water pollution.  River system with all its tributaries is like arteries of a leaf which carries all the minerals and nutritious content mixed in water from root to leaf tip. Cities with its built mass present an obstruction in the natural direction of flow of river. Cities can be built to facilitate the natural flow of river and should be planned to dissipate the extra water from the city fabric causing flood, as quickly as possible.

A model of sustainable ecological plan for a city can be like a leaf with its arteries’ alignment opposite the river flow, Green streak emerging from river bank, nurtured by river water itself which is carried through the narrow canals in the middle of radiating greens from the lush river bank. Radiating canals into the city fabric will not only help reduce the impact of flood by providing extra water holding capacity in times of flood hence giving extra time and cushion to tackle flood problem, but it will also provide space to create lust green natural and recreational zones all along the urban canal, giving breathing space up to the unreached recesses of cities where it is most required. Aligning radiating canals in somewhat differing direction of river flow will help reduce the possibility of city flooding due to these canals to reinforce the protection mechanism, control gates can also the added at the junction of canal and river. It is like having multiple canal bank development inside the city fabric radiating from river rather than having one riverbank development or rather ignored and polluted river cutting through the city. 


Dec 13, 2011

Biological Clock of City : Collective Dynamism of Population

By- Anoop Jha

Relevance of City Dynamism in Urban Planning

Biological clock of a city can be understood as a collective activity of resident population across the hours, days, seasons, and decades. These varying patterns and shift in activities depend on the characteristics and collective traits of cities or urban settlements like – Character of city like historic, metropolitan, ecological or place of tourist interest, industry type i.e. service, manufacturing or agro business, Economy and business of city, Trade and commercial activities, Religious activities, rituals, Public transit system availability and regulations, political stability and governance.    

A city or town metaphorically behaves like a living organism and hence each one of them has a unique signature activity pattern. In spite of static nature of cities it has lots of innumerous dynamic activities going on within it’s envelop and beyond. Pace and extent of these activities are cyclic in nature and varies across days and hours in somewhat predictable ways and seem synchronized with diurnal variation i.e. cycle of day and night, e.g. two visibly distinct peak hours of activities in any given particular day across the cities. Cities also seem synchronized to different seasons and show different patterns of daily activities as per that season, e.g. Majority of population getting off to sleep early in winters and shops being closed early, accompanied by lesser traffic and activities on street in winter w.r.t. summer.

The reason studying “biological pattern of city” can be an interesting and important are for planners is that till now, while planning or developing a city they have historically and inevitably always assumed that city is a static entity and then they prepare a Masterplan for that city, While it’s a fundamentally wrong assumption and process of planning for a city. Let’s take a fresh look on any random city, you will find that it’s a living, thriving and dynamic entity. The word morphology which is synonymous with mutation, when used in context of urban pattern itself states that city characteristically resembles a living and dynamic entity.

Challenge for the new age planners is to recognise and accept the fact that they are planning for an active, constantly changing and mutating dynamic entity called “City” rather than the past and contemporary notion of city as a static built mass, with some activities being marked in static zones of Landuse in different color on Masterplan. Urban planners not only have to consider the character of the particular city to be built or redeveloped but they also have to consider the present or future activity pattern as well as temperament of the city. 


Dec 9, 2011

Environment centric view of Planning and architecture

By - Anoop Jha

Creating  green value chain for projects

If we observe closely, apart from the obvious socio economic benefits and unavoidable demand needs of the development projects they have some questionable effects on our environment. Any development project affects the the ecological balance of nature through its resource exploitation and project externalities, which in most of the cases seems inevitable to prevent, but its effects can be mellowed down and an attempt can be made to neutralize the negative impacts of development on the environment.

Environment centric approach is the process of planning which revolves around the aim to conserve and minimise the effect of development project. It is applicable to any scale and nature of project whether architectural or planning.  Its a process of integrating green design and planning principals as well as adopting green strategies across the different segments of, project lifespan, implementation and operational value chain of any planning or architectural project.

There are ways and means to formulize greener value chain for new planning projects like new township or business district, introducing and reinforcing green retrofit for the existing functional value chain like any random city, there are also principals to plug in green principals into the value chains into the dilapidated value chain like old cities or uncontrolled megapolis. Planner’s role is to analyse the situation and propose green and sustainable environmental friendly strategies for the city.

Dec 6, 2011

Neglected Urban River Stretches - an untapped potential

By - Anoop Jha

Ignorance to the very thing which initiated the settlement of city

River which was supposed to be the life of city has become a dumping yard of city and ignored like a backyard of house in the course of evolution of city. Most of the early civilizations evolved and nurtured on the banks of river, there must be some reason for that.
Historically City used to be a combination of human Settlement, built form and River, which used to be a complete experience in itself, and key to an autonomous existence, because people used to be utterly dependent on river for –

Agriculture,
Food,
Grazing Land,
Trade,
Business,
Transport,
Drinking water,
Other Daily Activities

Contemporarily most of the rivers in the developing countries are either polluted or ignored or both, the only activity related to that is -

Dumping Industrial Waste
Dumping city sewage and waste water
Retrieving water for drinking and other purposes

For majority of rivers in the cities of developing countries the case is that river is no more directly related to livelihood of residents of the city, insignificant business or trade activities related to river, dominance of surface transport, numerous other recreational activities and places other than river.  Even rivers are perceived as hindrance in Commuting from one part of city to the other (common feeling: God forbid the long route and traffic jams on bridges crossing river at rush hours!!!).

Need is to Understand the significance of river in forming the balanced ecosystem in the dynamics of city. Cleaning, nurturing and integrating the river stretches in to the fabric of city. There is an urgent need for Pro-river Planning approach integrating it with mainstream city life. Strict but sensible river conservation and integration guidelines need to be in the place.

Even if the Riverfront Development is not possible due to some constraints like revenue, resource etc. some of the strategies to integrate river to the city life can be –

River cleansing and maintenance through diversion and downstream disposal of city waste water and sewage
Streamlining, developing and maintaining optimum acceptable standards of clean and safe public spaces with public facilities at river banks

Providing access to “public transport nodes” from river bank at walkable distances,

Integrating every existing open and green space of city to the   riverbank    

24X7 Surveillance and easy help facilities 

Light Pollution - A nuisance seemingly out of control

By - Anoop Jha

Light Pollution propelled by shear lack of awareness


If you will conduct a survey asking city dwellers, including educated as well as  illiterate population of any developing country to name the types of pollution they know, they tell you water and air pollution, few of them might also tell you Sound pollution but, you will find only handful of population even aware of the phenomenon of light pollution. This is unfortunate that people don’t even know about the price they pay in the name of industrialization and development, not even aware of their rights to live in a healthy pollution free environment.

There is a very simple and straight reason for all this unawareness - there is no curriculum throughout the hierarchy of education ladder that teaches the existence, cause, effects and resolution of light pollution. At least it wasn’t included in course structure in recent past. Another reason of lack of awareness is that majority of young population who were born and brought up in city and have not visited or spent time in any rural area or outskirts of city, they don’t even know that how does a clear night sky look like. They haven’t observed stars in real, lying on the terrace of their home, or in front lawn of their home, because majority of them live in compact flats in the comfort of controlled indoor temperature, they have only vague memories of star filled sky from a movie or childhood imagination of stories that their grandparents used to tell them. Possibly Light pollution is more of intangible in nature and awareness, hence planning communities as well as city authorities are more concerned with the tangible issues whose effects are visible and well known by citizens like water and air pollution.    

Acute phenomenon of light pollution calls for strict urban lighting Guidelines and Regulations whether people are aware of it or not. Parallelly an education drive needs to be conducted throughout the country to make people aware of the illness of industrialization, massive unregulated developments, their rights, emerging global phenomenon.  

Dec 5, 2011

Local Ecosystem : Model for adaptive growth

By - Anoop Jha

An autonomous and sustainable model for planning

Understanding the intricate pattern of  local ecosystem of any region which is adjustable and adaptive to its constantly changing environmental parameters like micro-climate, inhabitants, pace of activities, external tangible influences etc. could prove to be the key to future sustainable model for Urban and regional development. 

There are ample of example of such ecosystem throughout the world with  its peculiar challenges and solutions. ecosystems can be as small as an small island or a patch of land on a river bank, or it can be as big as a regional watershed catchment area of forest of Amazon, but each of these autonomous ecosystems have some kind of  similarity  which is absorptive capacity of these ecosystems, they seem to have inevitable capacity to nurture and absorb the growth within its somewhat flexible envelop. 

Natural ecosystems try to maintain a unique environmental conditions necessary for its existence from its constant physical and chemical activities. For example, river bank of an urban settlement which acts as the only grazing land for  buffaloes and cows of the small villages trapped within the city fabric in the process of urban expansion, can be an interesting area of study related to ecosystem.It is more or less similar cycle of activity flux everyday in the somewhat flexible envelop of this river bank grazing land, though constantly being influenced and invaded by the development activities of city and natural cyclic activities like annual flood. another example can be the Large forest of Savanna, which apparently seem calm from a distance but  buzzing with life cycle activities of flora and fauna inside its dense green envelop, constantly nurturing, changing, adapting  and absorbing the growth, while maintaining its ecosystem. Urban and Regional Planner need to study, document, analyse, extract, and implement the similar autonomous model of growth and planning for a sustainable future of cities.