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EcoCity – what and why? |
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| Eero Paloheimo’s lecture in Tianjin, China, 17.04.2007 | There are two questions: ”Why do we need an eco-city?”
and ”What is an eco-city? I will try and answer them in that order. First, why do
we need an eco-city? The world is undergoing an environmental crisis, which
manifests itself in various ways. Natural resources are being exhausted,
excessive amounts of carbon dioxide and methane are being released into the
atmosphere, the climate is warming, oceans are being polluted and there is less
and less virgin land available. This is not new. Everyone here knows these things. We
have been aware of these facts for several decades. This crisis affects all
countries and continents, but primarily those that
are industrialized. While different parties have proposed several
solutions, one that is credible has eluded us. The core of the problem is that
the industrialised world is constrained by too short-sighted interests and the
rigidity of the existing infrastructure. This includes both technical and
administrative structures. Sustainable long-term solutions and short-term
solutions that are convenient yet wasteful and polluting are in mutual
conflict. Let us look at an example familiar to us all: the
passenger car. This invention dates back more than two hundred years. It is a
completely unsuitable mode of transport today. It pollutes the air, uses
natural resources and causes as many deaths annually as the worst diseases. It
is totally outdated. This is a confession rather than an accusation. I myself
drive daily and my family has two cars. With the help of new technology we can easily develop
a transport system that is free of the problems I just listed. New systems have
not been developed as this is not in the interests of the automobile industry.
There are also several other industrial sectors at stake: the oil industry and
road construction, for instance. A radical shift in the direction outlined is
not in their interests, either. Cars bring work to a large number of designers,
scientists, instructors and countless industrial sectors that manufacture car
parts. The existence of cars is also in their interest. All these parties
oppose the change, even while they are aware of the destructive impact of the
passenger car on the present-day generation, not to mention future ones. For decades now, the structure of our towns and cities
and the nature of city plans have been shaped by the passenger car. It is
extremely difficult for urban planners to think without this condition. For
this reason most new towns and cities are not as pleasant as older ones, nor as
pleasant as they could be without the burdens typical for passenger cars. We
also know that in any European metropolis, traffic is a complete disaster in
many respects. The car is just one example. Such strong fortresses
have been built around many other aspects of the industrialised society that
tearing them down and replacing them with new ones seems an overwhelming
effort. Nevertheless, those fortresses must be torn down, in order to save the
earth from an environmental catastrophe. The underlying cause of this catastrophe
is these incorrect structures. This issue has been discussed and written about so
much that this audience is very likely to feel bored. The fact is, writing and
talking is not enough. We need concrete actions. We need examples demonstrating
that environmental problems can be solved with the help of modern technology.
The eco-city is such an example. That is why it must be built. The first
eco-city will not change the world. It will only provide a seed of change. A
seed will grow into a tree; a forest will grow to surround that tree. But
without that first seed, the forest will never grow. Without that first seed, the desert will remain a
desert. This is why we need one eco-city that is radically
different from existing ones. The Finnish scientists propose that the first
ever radical eco-city in the world be constructed in Earlier, I mentioned the rigidity of technical structures
and gave an example, the formidable fortress built around the passenger car.
Surely environmental destruction is less advanced in The rigidity of technical structures runs parallel
with administrative rigidity. This is the very issue my second argument
concerns: administration and politics. Western politicians and civil servants
have an unreasonable fear of the press. The media have a decisive influence on
whether they may continue in their office. Thus their main goal is to avoid
mistakes. This makes Western decision-makers timid. They are particularly
careful not to make any radical decisions. Bold solutions must undergo review
at several administrative levels, becoming more and more conservative during
the process. This too is a confession rather than an accusation. I have been a
member of the Finnish Parliament for eight years and an official, a professor
at the Helsinki University of Technology, for five years. As far as I understand, Chinese decision-makes do not
have the same constraints and are not as easily steered by the media. Major,
radical decisions may be easier to take when you believe they are correct and
need not suffer from irrelevant criticism. Making such a radical decision as to
build an eco-city is possible in Now you may also ask what A radical eco-city, such as I will describe later,
would be an important attraction. No such city has yet been built anywhere.
Since it is just the kind of city all Western countries need, it would attract
large numbers of architects, urban planners, politicians and other travellers
to However, there is an even more important
consideration. A radical eco-city is a product in the same way as the mobile
phone, television and car are products. It is just bigger. It has certain
features based on which its value can be considered. These features can also be
used to define it. I will come back to these later. However: the design and manufacturing process for this
product is similar to that of product design in general. First, you make a
prototype. Once made, you test the prototype and make critical improvements. A
prototype is always more expensive than the later, industrially manufactured products,
which have been improved through experience. The suggestion in front of us is
that I venture to propose the construction of a prototype
eco-city even though it will be more expensive than an ordinary city. The
manufacturer of a prototype has significant advantages. He will know what
improvements the prototype needs. He will be ahead of others. Even though he
will not be able to take out a patent for the product as a whole, he will be
able to protect certain components by patent and obtain exclusive rights
worldwide. If I will now try and answer the second question: What is
an eco-city? Or, what is an eco-city like? However, it is easier to first
review sites that have somewhat exaggeratingly been called eco-cities but which
in reality are not such. In Another attempt at an ecological lifestyle involves
larger urban units, which seem ecological but in reality are no more ecological
than other cities. The buildings may differ from traditional designs, they may
have more parks than other cities and they may be more pleasant than other
cities. They are cities or city sectors but not eco-cities, even if they seem
that way. They represent an aesthetic idea of an eco-city. A third example is cities that do not seem ecological
but may have some of the qualities of a genuine eco-city. In these cities more
attention may have been paid to the energy consumption of buildings, or they
may have a denser public transport network, than other cities in general. They
are modest attempts in the right direction. They are not eco-cities, even
though they have some elements of an eco-city. They are good attempts in the
right direction. There are two aspects which may be considered as
absolute indicators of ecological integrity. The first one has to do with the
first steps of the production process and the other with its last steps. First,
an eco-city is economical in all respects. Secondly, an eco-city does not
pollute its surroundings. These two aspects can be considered the basic
features of an eco-city and as indicators of ecological integrity. There are
several other less absolute requirements. A city must also be attractive. That
is why it must be pleasant. But we should remember that any city can be
pleasant. That is not an indicator of ecological integrity. An attractive
eco-city is a mixture of pleasant ambience and absolute ecological integrity. I will next attempt to provide a brief definition of
issues related to the technical features of an eco-city and explain the
reasoning behind these solutions. We will come back to these matters tomorrow
and the day after tomorrow in detailed presentations. There may be different
types of eco-cities. Let me present one example. In an eco-city, most of the food the residents consume
will be produced in the city itself, since this minimises transport costs and
traffic emissions. Thus it is much less densely built-up than an ordinary city.
The eco-city includes built-up areas alternating with fields, commercial
forests and park-like natural reserves. Organic waste is recycled by means of
composting and in bioenergy production. A Chinese eco-city with 20,000 inhabitants would cover
a land area of approximately 50 km2, which means a population
density of 400 people per km2. Let us compare that with a few
well-known cities. In An eco-city generates the energy it needs without
polluting the air, water or soil. For this purpose, a large part of the city
area will be reserved for solar panels, wind generators, geothermal heat pumps
and bioenergy production. These areas are at some distance from the residential
areas. Bioenergy production releases carbon dioxide into the atmosphere, but
plants re-absorb the carbon from the air. Thus a balance is maintained and the
carbon burden of the atmosphere does not increase. The next few decades will
see that the production of solar panels and wind generators increase in leaps
from current levels. An eco-city also includes artificial pools for fish
farming and vegetables will be grown in greenhouses where ambient temperatures
are too low for normal field cultivation. Artificial pools can be integrated
with the biological water purification system and energy supplied to the
greenhouses the same way as other parts of the city. In addition to food and energy, the third commodity
needed daily is water. An eco-city will have a closed water circulation system.
This means that water is not imported from outside the city, nor is wastewater
transported outside the city. At this point it should be noted that naturally,
the current water circulation system is also closed; however, water is
circulated through untreated water. In an eco-city the water circulation system
is controlled. It is partially based on biological and natural purification,
but also utilises physical and chemical purification methods. Being self-sufficient in energy, food and water is not
necessarily a more nature-saving or non-polluting solution than being dependent
on outside production. However, an eco-city ensures these processes are
non-polluting and avoids using virgin natural resources. By being
self-sufficient, the eco-city ensures that it is genuinely non-polluting and
nature-conserving. An insincere ecological approach means that you only address
ecological concerns in your own area and pass all problems on to your
neighbours. Waste management and materials recycling are
seamlessly integrated with all other operations of an eco-city. Utilising
organic waste in energy production and the fertilisation of fields is one
aspect of these operations. In this way waste management, energy production and
food production are mutually connected and form an integrated system. All of
these aspects must be simultaneously taken into account in planning to ensure
that technical knowledge from different fields is collected together, resulting
in a functional closed system. Materials are recycled and utilised and there is
no waste. There is one fundamental fact that should be stated in
connection with all of this. Although the structures of an eco-city are
designed as closed systems, there is another principle running parallel to this
approach: economy and thrift. The design principle is to avoid wasting energy
and minimising waste generation. This is particularly true for transport and
construction, which will be discussed later. As concerns inorganic waste and goods production, an
eco-city is not self-sufficient. Such a goal would be unrealistic. With the
exception of cars, the residents of an eco-city use the same products as other
people: refrigerators, televisions, mobile phones and bicycles. The majority of
these will be produced elsewhere and imported into the city, and any waste will
be returned to the producers. The eco-city cannot take responsibility for
recycling these objects. That is a wider issue for national consideration. An
ecologically-oriented society will have closed recycling systems in place for even
such material. But I will not discuss that here. However, there are two larger issues that are
fundamentally reflected in land use planning and zoning throughout the entire
city. These are transport and construction. There are no passenger cars in an eco-city. They will
have been replaced with vehicles resembling the passenger car. These vehicles
do not pollute the air since they are electrically operated and controlled via
a city-wide navigation system. They work like lifts, but move horizontally. These
vehicles will be discussed in more detail in later presentations. This
transport system makes urban planning easier in many ways. Streets may be
narrow, pleasant and winding. Parking areas are not needed by the roadside or
elsewhere. When the vehicles are not in use, their power units will be charged
at stations designed for this purpose. There is no noise from traffic, which is
safe and non-polluting. Bicycles are also allowed, while passenger cars are
not. Data communications are of very high, state-of-the-art
quality. There are rentable facilities for information distribution here and
there in the city, with large panels covering the walls. The panels can be used
for virtual meetings with experts around the world, finding information on the
Internet, contacting hospitals or universities, trading and taking care of any
number of daily matters. The facilities will be available for all inhabitants.
While they resemble Internet cafés, they are technologically much more
advanced. These opportunities will also be discussed in detail later. As for the opportunities offered by a new goods
traffic system, I would not recommend these for the first eco-city. In this
respect, we can allow for some compromise over the requirements concerning the
radical nature of the eco-city. However, I mention the system here as a future
ecological transport system. In the future, goods will be transported in vacuum
tubes using magnetic levitation. This will minimise the energy required for
transporting goods. But for now, let us only bear this in mind. This solution
applies to goods traffic between cities and other urban locations rather than
the internal infrastructure of an individual city. Construction and land use planning are seamlessly
linked with transport. Since the eco-city is car-free, construction can be
steered and planned without this burden. The eco-city will have a modern, sophisticated
data communications system, which enables efficient communications between
different sectors and allows for less compact development in land use. The
residents can easily exchange information without meeting each other in person
and live in single-family houses. Built-up areas can be interspersed with commercial
forests, energy plantations and uncultivated parkland without causing logistical
problems. Buildings are constructed and maintained with an eye on various
ecological principles. This means that local materials are used wherever
possible and energy is conserved at the various stages of the process.
Buildings are designed to be energy-saving and long-lasting. These aspects are
also taken into account in land use planning. For example, buildings are
positioned to catch maximum sunlight. Finally, I should say a few words about the residents.
This matter will also be discussed in more detail in later presentations. It is
surely important that people move into the city voluntarily, since a city
cannot be functional unless its residents feel at home in their environment.
Resident satisfaction can be ensured by various ways, which are not in conflict
with the basic ecological requirements. These two approaches are mutually
supportive. It should be remembered that the first eco-city will
be a seed and pave the way for further development. For this reason it is
evident that the city will attract a large number of residents from among those
who will design the next eco-cities and later participate in their
construction. To support this development, the first eco-city could even house
an international research institute concerned with the development of
ecological housing and communities in cooperation with various universities.
Otherwise, the residents will represent a variety of occupations like the
residents of any other city: there would be doctors, farmers, carpenters,
teachers, etc. However, it is clear that designing the first eco-city is much
more than a purely technical task. Engineers alone cannot design an eco-city. This
requires co-operation involving countless professions. When the first eco-city
is being designed, the priority is to define the goals and minimum requirements
correctly. Next, a team of designers representing sufficiently varied expertise
must be chosen. An eco-city is suited for various kinds of activities,
not excluding production with a special goal. Let me mention a few examples. An eco-city could house a small factory for the
assembly and maintenance of the special vehicles used in the city. Production
could later be expanded to supply similar vehicles to other cities. An eco-city
must also have a maintenance centre for the energy production equipment. Thus
the production sector could support the basic idea of the eco-city and thus
facilitate the design and construction of the next generation of eco-cities. An eco-city could house several small research institutes.
For example, there could be a research institute combining the basic
philosophies of Chinese and Western medicine. While this does not have much to
do with ecological integrity, it is not contradictory to the basic goals and
would be consistent with the spirit of the city. My purpose in describing these examples was to provide
a brief answer to a fundamental and justified question: the question of what it
would be like to live in an eco-city and what kind of people would live there.
These questions will be addressed in more detail in later presentations. In conclusion, I would like to show you a sketch of
what the planned eco-city could be like. (pictures and plan) I would like to thank you all for your attention. I
hope that the discussions during the next few days will spark lots of new ideas
that will lead to fast, bold solutions. When the |
Copyright © 2013
- Eero Paloheimo
All Rights Reserved