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Urban trees 'live fast, die young' compared to those in rural forests

phys.org

21–30 of 117 posts

Re: Urban trees 'live fast, die young' compared to those in rural forests

#23
post #5

Hard to expect anything different. The amount of salt that they get exposed to is horrifying, at least in places that experience cold temperatures and go nuts with the calcium chloride to melt off every speck of snow and ice.

Between the salt and the dog urine, hard to believe they survive at all.

Urine is just an aqueous solution containing urea (CH4N2O) and you need nitrogen in the ground since it is absorbed by plants and trees as nitrates. Nitrates are usually lacking in the ground so it's actually beneficial for the trees in the end.

https://www.fredericknewspost.com/news/environment/the-nitro...

Re: Urban trees 'live fast, die young' compared to those in rural forests

#24
post #18

Earlier quoted context omitted.

> the opportunity to tap water/sewer lines Does this involve breaking pipes? How exactly is it beneficial?

It's beneficial to the tree.

Until they do it too much and get cut down for it, anyway.

Re: Urban trees 'live fast, die young' compared to those in rural forests

#25
post #9

I think a bigger issue is healthy trees being cut in a lot of urban areas. https://www.dailymail.co.uk/news/article-5801627/Great-tree-... Reference to UK, but I can see the same happening in Ireland and Portugal.

Happening in Paris as well: the city keeps cutting trees that are more than 100 years old just because they can:

http://www.leparisien.fr/paris-75/paris-la-place-de-la-natio...

Re: Urban trees 'live fast, die young' compared to those in rural forests

#26

Earlier quoted context omitted.

There are some benefits for street trees that the article points out, including less competition for light, more CO2, more nitrogen deposition, a longer growing season, and the opportunity to tap water/sewer lines.

> the opportunity to tap water/sewer lines Does this involve breaking pipes? How exactly is it beneficial?

A majority of instances won't involve breaking a line, although that certainly does happen. The typical case is that they'll thrive off of damp soil around pipes with small existing leaks and leach off that for hydration.

Re: Urban trees 'live fast, die young' compared to those in rural forests

#27
post #21
post #14

That's the urban lifestyle in general, isn't it?

Is this a joke? Life expectancy has been increasing as people left the countryside for the cities. It's not even a matter of debate.

It's only relatively recently that cities began to have higher life expectancies than the countryside. Last 200 years or so, IIRC.

Re: Urban trees 'live fast, die young' compared to those in rural forests

#29
post #21
post #14

That's the urban lifestyle in general, isn't it?

Is this a joke? Life expectancy has been increasing as people left the countryside for the cities. It's not even a matter of debate.

These days it is but back before the revolutions in public health at the turn of the 20th century cities were very unhealthy, so much so that they tended to be net consumers of population from the countryside even when they weren't growing.
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