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What is sustainability?
Why cities? Statistical snapshots
Population increase and urbanisation
Environmental statistics
Human development index – energy and the environment
Health impacts
Economic impacts – the cost of city health
Sustainability impacts
Conclusion… for the first time in human history more people live in cities than outside cities … cities are growing at 2.3 per cent per annum compared with rural areas at 0.1 per cent per annum worldwide. Cities are where it is all happening. If we are going to succeed in sustainability it is going to live or die in the cities.
(Dr Harry Blutstein, Director of Integrating Sustainability)1
What is sustainability? |
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2.1 | The committee received many submissions on the meaning of sustainability. Submissions drew attention to the fact that the factors relating to sustainability are many, varied, complex and inextricably interrelated. |
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2.2 | Professor Valerie Brown from the ANU’s Research School of Resources, Environment and Society raises questions that are at the core of the difficulty:
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2.3 | In developing an understanding of the concept of sustainability, the committee had regard to the range of views put forward in the evidence. For example:
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2.4 | The committee supports the approach of these ideals. However, it is a challenge to translate these ideals into a more tangible concept of a sustainable city in operation. According to Professor Anthony McMichael, from the National Centre for Epidemiology and Population Health, sustainability is about:
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2.5 | Sustainability is a set of principles and practices; and therefore a dynamic concept implying a continual process of improvement. |
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2.6 | The committee accordingly prefers to speak of a ‘vision for a sustainable city’ and a pathway to sustainability. The committee sought to articulate a set of principles for sustainable cities of the future: they will be vibrant urban regions which are economically productive, environmentally responsible, and socially inclusive. On a practical level, a sustainable Australian city should aim to:
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2.7 | The committee also believes that this future will not be achieved without planning and a clearly articulated strategy. |
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2.8 | While not all encompassing, and the committee acknowledges that some submissions suggested additions to these objectives, the committee sees value in this set of objectives as articulating how we envisage a sustainable Australian city of the future. |
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2.9 | Although sectoral issues are structured in this report under discrete headings for ease of reference, the committee is acutely aware of the interrelationship of all the factors in finding a pathway to sustainability. |
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2.10 | Many of the committee’s final recommendations will refer back to an overarching framework that integrates the components of a sustainable city. It is this framework that can provide an integrated method of policy consideration and take into account the interrelatedness of these sectoral issues. |
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Why cities? Statistical snapshots |
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2.11 | By focusing on sustainable cities, the committee has a unique opportunity to influence the outcomes for over 80 per cent of the Australian population, given Australia is one of the most urbanised countries in the world .8 |
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2.12 | The following is a snapshot of Australia’s performance across some population and key sustainability indicators. In many cases, the figures presented are an indictment of current unsustainable practices. |
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Population increase and urbanisation |
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2.13 | Australia's estimated resident population at December 2004 was 20.2 million people, an increase of 230,000 people since December 2003. This represents an annual growth rate of 1.2 per cent.9 |
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2.14 | The majority of Australia ’s growth is in the capital cities. At June 2003, the cities were home to 12.7 million people, or around two-thirds of Australia ’s population. Significantly, the growth of cities also accounted for 64 per cent of the total growth in 2002-03, indicating that Australia ’s population continues to increasingly be concentrated in urban areas.10 The largest growth occurred in Melbourne , followed by Brisbane and Sydney .11 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
2.15 | The highest growth rates in Australian cities were experienced in the inner city. The Local Government Area of Melbourne, for example, recorded an annual growth rate of 7.9 per cent, while those of Perth and Sydney also experienced rapid growth.12 |
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2.16 | However, a significant proportion of Australia's growth 13also occurred in the outer Local Government Areas of capital cities, particularly in Sydney and Melbourne. Melbourne’s fringe Local Government Area of Melton recorded Australia’s highest growth rate during 2002-03 (11.8 per cent or 6,900 people). |
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2.17 | With the numbers of urban residents increasing, our cities risk becoming more unsustainable across environmental, economic and social indicators. Larger cities are resulting in more urban travel, greater freight costs, less bushland, higher living costs, more social isolation, reduced air quality, greater water and energy consumption, decreased physical health, and increased levels of household and commercial waste. |
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Environmental statistics |
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2.18 | The 2001 report Australia State of the Environment – Human Settlements14 shows Australians to be high resource users and waste generators, and, in some instances, the ‘world’s worst’:
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2.19 | These environmental statistics paint a bleak picture of the effects of unsustainable practices. Combined with an increasing population size, and the increasing concentration of population in urban and coastal areas, the case for action on sustainable cities becomes more urgent. |
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Human development index – energy and the environment |
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2.20 | The Human Development Index (HDI) is a measure of national emissionsand electricity consumption on a per capita basis. It provides a comparative means to evaluate the impacts of human settlements across developed nations. Table 2.1
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2.21 | Anthropogenic (human originated) carbon dioxide emissions stem from the burning of fossil fuels, gas flaring and the production of cement. The latter is a significant contributor to carbon dioxide emissions from developed nations. |
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2.22 | Australia is second only to the United Sates of America in its emission rate per capita, and significantly above many other developed nations. |
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2.23 | Electricity consumption per capita (in kilowatt-hours) refers to gross production, which includes consumption by station auxiliaries and any losses in the transformers that are considered integral parts of the station. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
2.24 | Australia is ranked sixth amongst the nations listed in terms of its per capita electricity consumption. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Health impacts |
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2.25 | The preceding statistics demonstrate the importance of working towards sustainable cities, particularly when considering the evidence connecting health and urban design. Increasingly, researchers are determining strong links between urban living and the rising incidence of certain diseases:
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2.26 | Canberra Environment Centre argues that current dominant approaches to health and the environment are ‘based on solving the problem after it has been created’.16 Professor Steven Boyages suggests that this situation - and its associated costs - could be reversed. Links between health and the urban environment is emerging as a new area for study and, as Professor Boyages explained, Australia is ‘probably leading the world in understanding how we translate the problems into some form of action’.17 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
2.27 | In its submission, the Western Sydney Area Health Service lists the range of health influences and impacts of urban living as follows:
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2.28 | Evidence suggests that that there are three main health issues that are impacted by the urban environment: obesity, cardiovascular disease and diabetes. Obesity does not stand alone as a health issue, but is also a major risk factor for cardiovascular disease, for which ‘physical activity is a major modifiable risk factor’.19 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
2.29 | Obesity impacts on the health of many Australians and, due to large healthcare costs, on the Australian economy. Over half of all adults were considered overweight or obese in 1995, second only to the levels reported in the United States. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
2.30 | The committee heard further evidence that, by living on a freeway ‘you are four times more likely to be obese than if you do not live on a freeway.’20 |
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2.31 | The committee noted, in particular, the importance of physical activity for children:
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2.32 | Mental health is also affected by the level of physical activity, since exercise is ‘acknowledged as an effective treatment for depression’.22 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
2.33 | Another significant health impact of our cities concerns rising rates of respiratory illnesses. In its submission, the Bus Industry Confederation refers to a number of studies that demonstrate linkages between air pollution and respiratory illness, including respiratory mortality, with cars and industry the main source of pollutants. Further:
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Economic impacts – the cost of city health |
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2.34 | Numerous submissions24 to the committee commented on the health cost of unsustainable practices to the Australian economy. |
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2.35 | The CSIRO believes that, by 2025, health impact statements will be used much in the same way that environmental impact statements are used in the planning process today.25 |
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2.36 | The Australian Bicycle Council also drew attention to the linkages between health care costs, poverty and transport infrastructure:
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2.37 | Several submissions27 supported the view that poor transport planning can be a determinant of poverty. The Bus Industry Confederation gave an example of this stating that:
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Sustainability impacts |
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2.38 | One concept used to measure sustainability is the ‘ecological footprint’. This can be applied to Australia as a whole:
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2.39 | The concept can also be applied to industrial cities. Professor Anthony McMichael also observes that, for example, Sydney’s ecological footprint is 150 times greater than the area of Sydney itself, which means: | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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2.40 | The committee agrees with Professor Peter Newman’s observation that a city would be become more sustainable if it reduced its ecological footprint at the same time as improving its liveability.31 |
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Conclusion |
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2.41 | Environmentally, socially and economically, unsustainability exacts a high cost. The longer that Australia delays the move to adopt sustainable practices, the greater those long term costs will be. |
1 | Dr Harry Blutstein , Integrating Sustainability, Transcript of Evidence, 16 March 2004 , p. 57. Back |
2 | Professor Valerie Brown , ANU School of Resources, Environment and Society, Submission 90, p. 3. Back |
3 | Mr Andrew Inglis , Submission 76, p. 9. Back |
4 | Professor Peter Newman, Sustainability and Planning: A Whole of Government Approach, Paper presented to the Planning Institute of Australia , 2001, p. 9. Professor Peter Newman is the Director of Murdoch University’s Centre for Sustainability and Technology Policy, Director of the WA Sustainability Policy Unit and NSW Sustainability Commissioner. Back |
5 | Professor Peter Newman, Sustainability and Planning: A Whole of Government Approach, Paper presented to the Planning Institute of Australia , 2001, p. 6. Back |
6 | Integrating Sustainability, Submission 27, p. 5. Back |
7 | Professor Anthony J McMichael , National Centre for Epidemiology and Population Health, Submission 102, p. 2. Back |
8 | STEP Inc., Submission 87, p. 3: 83 per cent of Australians live in cities. 60 per cent live in 6 cities and 40 per cent live in Sydney and Melbourne alone. Back |
9 | Australian Bureau of Statistics, Estimated Resident Population, Australian Demographic Statistics, Catalogue 3101.0 Back |
10 | Australian Bureau of Statistics, Regional Population Growth Australia and New Zealand, 2003-04 , Catalogue 3218.0 Back |
11 | Brisbane Statistical Division (SD) was the fastest growing capital city in Australia in 2002-03, increasing by 2.5 per cent, followed by Perth and Melbourne SDs (up 1.5 per cent and 1.3 per cent respectively). Back |
12 | Australian Bureau of Statistics, Regional Population Growth, Australia and New Zealand, 2003-04, Catalogue 3218.0 Back |
13 | Australian Bureau of Statistics, Regional Population Growth, Australia and New Zealand, 2003-04, Catalogue 3218.0 Back |
14 | Dr Peter W Newton, Lead Author, 2001 Australia State of the Environment – Human Settlements, February 2003, p. 1. Back |
15 | Australian Institute of Landscape Architects, Submission 19, p. 2. Back |
16 | Canberra Environment Centre, Submission 6, p. 1. Back |
17 | Professor Steven Boyages , Western Sydney Area Health Service, Transcript of Evidence, 27 January 2004 , p. 34. Back |
18 | Western Sydney Area Health Service, Submission 106, p. 2. Back |
19 | Central Sydney Area Health Service, Health Promotion Unit, Submission 18, p. 2. Back |
20 | Professor Rob Moodie , Victorian Health Promotion Foundation, Transcript of Evidence, 27 January 2004 , p. 77. Back |
21 | Australian Bicycle Council, Submission 70, p. 4. Back |
22 | Australian Bicycle Council, Submission 70, p. 4. Back |
23 | Bus Industry Confederation, Submission 97, p. 24. Back |
24 | See Central Sydney Area Health Service, Health Promotion Unit, Submission 18, p. 1; Railway Technical Society of Australasia, Submission 188, p. 2; Australian Bicycle Council, Submission 70, p. 2; Australian Conservation Foundation and Environment Victoria, Submission 162, p. 10. Back |
25 | CSIRO, Submission 91, p. 24. Back |
26 | Australian Bicycle Council, Submission 70, p. 4. Back |
27 | See Australian Bicycle Council, Submission 70, p. 4, Alexandra and Associates Pty Ltd, Submission 22, p. 1 and Committee for Melbourne , Submission 187, p. 2. Back |
28 | Bus Industry Confederation, Submission 97, p. 22. Back |
29 | Dr Peter Newton , ‘Urban Australia 2001’, Australian Planner, Vol 39, No 1, p. 37. Back |
30 | Professor Anthony McMichael , National Centre for Epidemiology and Population Health, Transcript of Evidence, 27 January 2004 , p. 83. Back |
31 | Professor Pete r Newman, Sustainability and Planning: A Whole of Government Approach, Paper presented to the Planning Institute of Australia , 2001, p. 4. Back |
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