Business

The shape of cities to come will follow new technology

By Dominic Bettison (China Daily)
Updated: 2011-01-03 10:48

In 1980, only about a fifth of China's population lived in cities but by 2010 this percentage had risen to about 45 percent, or roughly 600 million people, out of the total of 1.3 billion people.

The demand for city planners and designers to deliver instant cities in order to meet the influx of new migrant workers and the rise of the middle classes has been immense in China. Local governments expect planning departments to deliver complete new towns in two to three years. In the West, with our convoluted and over-democratized planning process, producing even one building in this timescale would be a challenge.

In Guangzhou, China's third-biggest city and manufacturing heart, the local planning authority has delivered a brand new extension to the city, built in less than five years on farmland to the east of the city. Zhujiang new town was conceived to replace the overcrowded, gridlocked and polluted city center. It was also designed to form the centerpiece for Guangzhou hosting the Asian Games in October this year.

Landmark buildings have been designed by international architects, which include the Guangzhou International Finance Center, designed by Wilkinson Eyre Architects. At 440 meters, it is China's second-tallest building and a symbol of Guangzhou's economic might.

The new town contains many other high-rise commercial and residential buildings, an extension to the city's metro system, public parkland and, for good measure, a handful of cultural buildings, including an opera house and a provisional museum.

A recent trip to the new city revealed new buildings but congested roads, a packed metro system and most of the residential apartments occupied. The new city will soon be full to capacity and smog persists overhead, a by-product of the factories that encircle the city and heavy car use.

So while planners and architects frantically build to keep up with the pace of urbanism, city officials and designers must work together to tackle the root causes of pollution, encourage motorists away from their cars by building high capacity infrastructure and public transport systems and deliver a balance of social as well as market housing to ensure that China's cities of tomorrow are places that people want to live.

Distributed cities

The government's current strategy for providing for this huge increase in urbanism is to develop new cities from scratch, away from more established centers of population. This policy of distributed growth could see the creation of possibly 100 new cities of up to a million people and over 50 cities with populations of between 1 million and 5 million. If China is to build new cities from scratch, or extend existing cities, then it will need to consider and embrace new ways of thinking and integrate advance technologies.

Sustainable design

China is now acknowledging and embracing the importance of sustainability for its future security and well-being. Its insatiable hunger for resources, materials and power will only be exacerbated by the increase in number and scale of its cities and it must adopt sustainable approaches to design. Buildings and cities must be efficiently designed and built using minimal materials, consume less water and energy, and generate fewer greenhouse gases. At the end of their lives they must also be recyclable.

Eco cities

A series of entirely new carbon-neutral cities are being planned, which could be a sign of the future. The best known is at Dongtan, near Shanghai. Dongtan will have a population of 500,000 people and is planned to be ecologically friendly, with a zero-greenhouse-emission transit system and complete self-sufficiency in water and energy, together with the use of zero carbon principles for its buildings. Energy demand will be substantially lower than comparable conventional cities. Most of the city's waste will also be recycled. Original plans would have only electric or hydrogen powered vehicles allowed within the city.

Green space

Chinese cities of the future will integrate more green space for public amenities, both at a city-wide level and within individual sites. Chinese cities are already taking inspiration from public green space provision in some of the world's best cities, including Central Park in New York and the royal parks in London. Increased green space within the city will also help reduce the urban heat island effect, which brings with it additional energy requirements for cooling.

Building tall

According to a recent report by McKinsey, China is predicted to build 50,000 skyscrapers in the next 20 years. The major east coast cities of China are already well known for their proliferation of tall buildings; indeed, Shanghai is believed to have more skyscrapers than Manhattan. Originally designed as symbols of progress and status, tall buildings will become ever more widespread across Chinese cities as a means of achieving higher density of living and to maximize efficiency of land use. However, the skyscrapers of tomorrow will need to integrate the best environmental design and integration of green technologies, if the land use benefits are not to be outweighed by their energy consumption.

Public transport

Chinese cities are now highly dependent on the car and the impact of this is now becoming clear. New government strategies look to put in place modern, efficient, high capacity public transport infrastructure as the first component of any new urban masterplan. These transport systems will in the future connect directly with developments that sit either directly above the transport system or in close proximity to it.

In Beijing, where traffic jams are legendary, we are designing a series of metro stations that form part of the wider expansion of its metro system. This expansion will push out new lines to satellite cities such as Tongzhou, 15 km east of central Beijing. These metro stations will form multi-mode transport interchange hubs from which underground connections to adjacent major developments have been planned.

Bicycle use

In China, the car has replaced the bicycle as a major mode of transport. This is a situation that in many Western cities is being rebalanced with the creation of dedicated city-wide cycle routes. Hopefully it won't be too long before China rediscovers the benefits of the bicycle.

Mega cities

Some view the most efficient way to urbanize China's millions of people is to encourage them to move into ever more denser urban areas and concentrate on expanding already major cities to form "mega cities", such as Shanghai and Beijing. Shanghai already has a population of nearly 18 million people but this is set to rise by around a third to 25 million by 2020. Five years ago, construction began on the creation of nine new satellite cities in order to allow for this predicted expansion. Some criticism has been raised toward these new cities, each planned to be the same size as Atlanta, for the lack of employment and the inadequacy of the transport systems. Most debate, however, surrounds the decision to theme each around a European city. The first satellite city to be built is called "Thames Town" as is designed as a replica English city complete with a Gothic church and cobbled streets.

Could this be a sign of a lack of confidence in a distinctly Chinese approach to urban design, or the manifestation of a real need to provide fast "instant" cities, which try to extract the best, or sometimes unwittingly, the worse, from other more mature cities?

Hub and spoke

But perhaps the future lies in the mega city designed along the "hub and spoke" principle. Wuhan, a city of 5 million people located on the Yangtze River, plans to implement such a planning strategy to allow for its anticipated expansion to 12 million people by 2020. It has already put in place a vast network of mega bridges, road and rail projects and is planning a new airport to handle up to 70 million passengers a year, equal to Heathrow airport. Most of the urban population will live in zones resembling large "spokes" radiating from the center of the city, which connect back by expressways and modern rail infrastructure. Residents will be encouraged to work and enjoy their leisure time in their local area, surrounded by natural landscape and water and without the need to commute to the city center.

Technology city

The future design of cities will become ever more closely interwoven with advances in technology. China may only need to look to South Korea to see the fusion of urban design and technology now taking place. At Songdo, near Seoul, a city of 300,000 is being developed as the experimental prototype community of tomorrow. Touted as the world's first fully networked city it will provide state of the art technological infrastructure to residents and businesses. The city will run on information, allowing virtual meetings to be convened anywhere and making the need to travel to work almost a thing of the past. The city incorporates a park modeled on Central Park in Manhattan and a series of waterways and canals inspired by Venice. The development partners behind Songdo, including Cisco Systems, intend to offer the design of "instant" cities as a service and to offer city necessities such as water, power, telephony and traffic management as a single Internet enabled utility. Cisco and its partners announced their intention to role out 20 such new cities across China and India. The future of cities worldwide may well be about to change direction.

The author is director of Wilkinson Eyre Architects, London.