One of if not the best way to tackle urban heat island effect is to go nuts with trees… and not just nut trees; fruit trees, natives, exotics, you name it – the menu needs to be as broad and diverse as possible.
The term ‘urban forest’ seems to be used fairly loosely – sometimes it refers to comprehensive ecological pockets within cities, other times it means streetscape planting or even ‘orchards on the commons’. Lots of interesting concepts around this but the one I wanted to share this time is Melbourne City Council’s ‘Urban Forest’ web site.
Have a surf through this site (which I highly recommend – heaps of good ideas to ‘borrow’ : ) and something new jumps out relatively quickly – Melbourne City Council are treating their urban forest as a city asset, not only for its heat island mitigation benefits, but also as city amenity, stormwater filter etc. In fact they value their current 70,000 street trees at $650M!
The Council, through their Urban Forest Strategy 2012-2032, are aiming for a 40% tree canopy by 2032.
“The City of Melbourne’s urban forest will be resilient, healthy and diverse. It will contribute to the health and wellbeing of the community and to the creation of a liveable city.”
You may also have come across ‘1 million trees’ programs in now many of the world’s major cities – NYC, London, Sydney etc. Well, Melbourne is aiming for 1.5 million in the metropolitan area plus another half a million regionally. Beat that.
If we were to overlay this urban forest agenda with our ‘hot suburbs’ maps from the previous post, we’d generate some pretty interesting opportunities for urban forestry and green streets upgrades. Take the time to explore this web site – a great read and clearly the result of some very smart and collaborative work.