05.21.07

Trees are Cool

Posted in Climate Change, Energy, Health, Resources at 9:07 am by justakim

I saw this while actually taking class outside: parks could lower city temperatures. Putting aside the climate change predictions, it makes a lot of sense that parks and greenery would reduce the temperature of the nearby environment. I can attest to this as I sit under the shade of trees on cool, moist grass on a fairly hot, moderately humid day. But the article says building new parks is not necessary; you can roll out strips of green geraniums on your roofs, and this would make a difference.

If that doesn’t suit your fancy, or you’re having flashbacks of spray-painted grass, asian apartment dwellers have a more aesthetically pleasing alternative. For the many asians living in concrete-lined apartments, having a small garden in their balcony offers many benefits, only part of which is cooling.

Beijing has pledged to add 100,000 square meters of roof gardens every year from 2007-2010. And last month Singapore, the “garden city”, unveiled its first “green” housing estate, with walls of cooling greenery hardwired into its architecture.

“From the scientific point of view, every plant produces a cooling effect,” said Professor Nyuk Hien Wong, of the Department of Building at the National University of Singapore, who designs the green walls.

“The rule of thumb is one degree less is a five percent (energy) saving”.

Against this backdrop, Asia’s apartment gardeners are taking a small, but important, step in the right direction, he said.

“If you look at it as one individual unit doing that, it may not be that significant. But if everybody is doing it, there may be a very big impact”.

If roll-out turf does not appeal to you, or perhaps you have a bank of solar panels already, a garden in a small space can make a difference. You just have to balance out the time required for this hobby, and the cost of watering them potted trees.

Mm, I think the sun had an impact on my post count last week.

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