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Urban heat island effect making temperatures 8F hotter in 65 US cities – study
(www.theguardian.com)
this post was submitted on 10 Jul 2024
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There are a lot of places in cities, even cities with a fair amount of trees like Chicago, where there could easily be far more trees. It would just mean taking up more sidewalk space, cleaning up leaves in the fall, petals in the spring, etc. Businesses start complaining about it.
And sometimes it could be trees but they think other things are prettier.
Here's a bit of the Magnificent Mile in Chicago. Could those flowers be replaced with trees? I don't see why not.
It depends on what is under that dirt. Is it deep enough for a root system, are there utilities under that, etc?
Also, mature trees will need some space for the root system to collect water and spread without destroying roadway. This is why a lot of warmer cities like to plant palm trees in medians - they have a pretty shallow / narrow root system.
The problem with planting trees in boulevards or in parking lot islands is that they cement and asphalt don't allow a lot of water to filter through to the roots. They might be fine for a little while, you might be able to nurse them along if you find a way to water them. But ultimately, they will all die off earlier than they should.
There is also increased maintaince as leaves must be cleared from the streets/sewers, dead branches must be removed before they are hazardous, and the city should be monitoring overall health to cut trees before they rot out and fall.
Agreed. Although, it depends on the tree. A lot of warmer cities like palm trees because they have a root system that works well in this scenario.
It’s also worth noting that many cites have utilities running under these streets.
There have to be tree species that will do all right with less water. They might be invasive though, so that would be a different problem.
Bradford pears were used a lot in my area, but were ultimately invasive. I think putting more native shrubs or bushes might help some since their drip like can be kept smaller than a tree's.
It's a problem I have to deal with regularly at work. So many parking lots had low canopy trees that just all died off at about the same time due to being in parking islands.
yeah. that image is what I meant by boulevard type things. Im just saying there is not a whole lot of options. Some more can be done but its going to have some hard limits from soil access.