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Macquarie Park Sydney East Air Quality.
|Updated on Tuesday 18:00|
Urban infill utopia is baking our cities under concrete
December 10, 2019 | 10 comments
For years, the development industry and urban planners have called for Australia’s supposedly underutilised middle-ring suburbs to be bulldozed for apartments and townhouses in order to house the many millions of extra migrants projected to inundate our cities over coming decades:
This transformation into a dense urban form is to be most stark in Sydney, where the Urban Taskforce projects that only one quarter of dwellings will be detached houses in 2057, down significantly from 55% currently:
This transformation will obviously also see reduced access to green space, according to Infrastructure Australia’s modelling, as Melbourne’s and Sydney’s populations balloon to a projected 7.3 million and 7.4 million people by 2046 (see last row below):
*An issue conveniently ignored by these geniuses is that in addition to eroding all markers of liveability (see above), their urban infill utopia will also make our cities hotter, causing increased heat-related deaths.
Brisbane’s older suburbs are more likely to have green spaces and leafy tree cover, cooling streets and homes.CREDIT:AAP
That’s the view of Tony Matthews – a senior lecturer in urban and environmental planning at Griffith University – who recently penned the following:
*“Heat stress actually causes more deaths in Australia than all of the other natural disasters combined”…
Middle-ring suburbs were more likely to be the leafy, cool retreats created by postwar architecture and planting…
“The real problem comes when we try and increase densities, which we have done in a suburban context through a quality called urban consolidation,” he said.
“And that has been taken up through most of the capital cities, all of the capital cities, in fact.
*“It’s squeezing more floorspace out of less land, so that’s why we’re seeing so many apartments, so many townhouses, we’re also seeing a reduction in block sizes from maybe 700 metres or 650 metres to 400 metres.”
Squeezing more properties onto land means there is less room for parks, trees, or anything other than constructed buildings, he said.
The result is dense, urban fringe suburbs with little greenery and houses with no gardens, parks reduced in size as competition for tenancy grows…
“What I feel we have done with these suburbs is we have locked them into a pattern of heat stress, limited outdoor activity, limited use of the public realm, and all of the problems that come with that because they’re not green enough and in some cases they don’t have the potential to be any greener,” Dr Matthews said.
The Daily Telegraph also reported that “rampant” tree removal in Sydney’s North West is leading to “ecological disaster” and raising temperatures:
Sydney’s northwest is facing an “ecological disaster” as a chainsaw massacre of thousands of trees in leafy suburbs make way for new developments and send urban heat soaring.
Preliminary works on major developments in Macquarie Park and Epping are cutting down hundreds of trees as a war of words breaks out over who is to blame for the “environmental atrocity” turning suburbs into concrete jungles…
New data shows big developers and mum-and-dad investors are peppering Ryde and Parramatta councils with development applications to remove trees…
Cr Wilson said…. “when you are putting more people into a limited area, the environment is going to suffer”…
CAAN: Epping is rapidly losing its beautiful tree cover and heritage homes for like high-rise residential
*Today, the ABC reports that Australia’s cities are getting hotter through a combination of high temperatures, increasing populations and reduced open spaces, which demands urgent action to cool our cities down:
High temperatures, increasing populations and reduced open spaces are just some of the factors behind rising urban heat in Australian cities…
Professor Veronica Soebarto is chair of the Heat and Habitat in Cities Symposium, which is being held at the National Wine Centre in Adelaide.
She said intensifying heat in Australian cities was caused by a lack of greenery, as well as concrete buildings and other hard surfaces that “radiate heat”…
An added challenge is responding to the demands of Australia’s growing population…
The infill utopia of jamming millions more people into the existing urban footprint will necessarily chew-up green space as backyards, trees and open space are removed to make way for additional dwellings. And this will necessarily exacerbate the ‘heat island’ effect afflicting our cities, in turn raising energy use (think air conditioners).
Clearly, maintaining green infrastructure in our major cities is not consistent with the projected explosion of their populations via mass immigration, along with planning rules that force increased population density.
The first best solution to this problem is to slash immigration back toward the historical average, thereby slowing the destruction of green space:
*Address the problem at its source.
Leith van Onselen is Chief Economist at the MB Fund and MB Super. Leith has previously worked at the Australian Treasury, Victorian Treasury and Goldman Sachs.
CAAN Photo: Macquarie Park: JQZ Prime Precinct; concrete, steel and glass emit Co2 in manufacture and ongoing use!