Wonderful that Marrickville council planted  Queensland Brushbox trees along the Princes Highway Tempe.  Once grown they should help all the residents living close to the highway.

Wonderful that Marrickville council planted Queensland Brushbox trees along the Princes Highway Tempe. Once grown they should help the workers in the shops and all the residents living close to the highway.

Researchers from the Woolcock Institute of Medical Research at the University of Sydney have released their review into the health impact of tiny air pollution particles, also known as particulate matter.  They found that most particulate matter is man-made & “could lead to increase in people reporting to hospitals with respiratory or cardiovascular effects.”

This supports 2010 research done by the US Health Effects Institute who reviewed 700 worldwide health-pollution studies. They found:

  • traffic pollution within a 500-metre radius of a major thoroughfare is likely to exacerbate asthma in children.
  • trigger new asthma cases across all ages
  • impair lung function in adults &
  • could cause cardiovascular illness & death. See – http://bit.ly/1MKStR8

The researchers from the Woolcock Institute of Medical Research recommended that immediate steps be taken to reduce particulate matter pollution from the air.  Although particulate matter can come from plant & animal matter, the majority comes from motor vehicles, mining, power stations & even coal fire barbeques & wood heaters.

“On high pollution days we may detect extra cases of stroke, other myocardial infarctions, heart attacks, for instance, and also PM (particulate matter) air pollution has been linked to premature mortality…..  So it will bring forward those few extra deaths – particularly, we think, in more vulnerable people such as the elderly.”  See http://ab.co/1RP6teY

However, this study from the Lancaster Environment Centre has shown that –

  • “increasing deposition by the planting of vegetation in street canyons can reduce street-level concentrations in those canyons by as much as 40% for nitrogen dioxide & 60% for particulate matter.
  • Deposition rates of nitrogen dioxide & particulate matter to vegetation are much higher than those to hard, built surfaces.
  • Substantial street-level air quality improvements can be gained through action at the scale of a single street canyon or across city-sized areas of canyons.
  • Vegetation will continue to offer benefits in the reduction of pollution even if the traffic source is removed from city centers.” See – http://bit.ly/1UMfVQV

And, “The efficacy of roadside trees for mitigation of PM [particulate matter] health hazard might be seriously underestimated in some current atmospheric models.”

The ability to lower particulate matter is in the power of human beings.  Stop using coal power stations, drive less, ride bicycles & catch public transport more & don’t use coal-fired barbeques or burn wood for heating.

We can plant a tree on our property if there is space & create a verge garden on the street.  We can also lobby our local councils to increase the urban forest, as the Lancaster research clearly demonstrated a drop of 60% for particulate matter between the street & the row of terrace houses & these were only small Birch trees in pots.  Imagine what a good canopy mature street tree can do for us all in cleaning up the air.

Researchers continue to clearly show us that trees are good for people in a myriad of ways.  Our mental health & happiness levels, our ability to learn & our respiratory & cardiac health are just some benefits trees bring.

A street in Marrickville.  No overhead powerlines and footpaths of equal size on both sides of the road.

A street in Marrickville. No overhead powerlines and footpaths of equal size on both sides of the road.  For the benefit of all, there should be street trees along here.  

 

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