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Trees also generate oxygen, which can be an issue in cities since (BBC Science Focus): > "A human breathes about 9.5 tonnes of air in a year, but oxygen only m

Trees also generate oxygen, which can be an issue in cities since (BBC Science Focus): > "A human breathes about 9.5 tonnes of air in a year, but oxygen only makes up about 23 per cent of that air, by mass, and we only extract a little over a third of the oxygen from each breath. That works out to a total of about 740kg of oxygen per year. Which is, very roughly, seven or eight trees’ worth." You might think the problem would be minimal due to atmospheric circulation, but like with smog accumulation, some weather patterns can lead to problems: "(2021) Declining Oxygen Level as an Emerging Concern to Global Cities" https://pubmed.ncbi.nlm.nih.gov/33904720/ https://pubmed.ncbi.nlm.nih.gov/33904720/

wouldbecouldbe 3y ago
So you would need at least one adult tree per person to make an impact; for most cities that would amount to a forest.
- dvdkon 3y ago
  That doesn't sound like that much, especially in less-dense cities and if you count "embedded" forests/parks. Looking at local newspaper articles suggests Prague has possibly more than that, but mostly in forests, not on streets. I don't know enough to say if/how much that would help with air quality.
  - wouldbecouldbe 3y ago
    I live in a city with trees, an adult tree normally takes up the space of a big block, you can have maybe 20-30 on a space where 400 live if you cover the street. Most likely plants can be more a efficient way. Probably everything fast growing is more oxygen converting, and co2 storing
- wouldbecouldbe 3y ago
  I did some reddit research, bamboo seems highest oxygen convertor, so plant a few bamboo forest if the climate allows it. Would also look cool
- vel0city 3y ago
  For my current home I've got 7 trees and several bushes for four people. I don't exactly live in a forest. My neighbor who lives alone has at least four trees on their property.
  - wouldbecouldbe 3y ago
    Sir, I envy you, but you are not living in an apartment in a city.
u32480932048 3y ago
Perhaps it's the narcotic effects of nitrogen at 1 atm that make me not give a shit. https://pubmed.ncbi.nlm.nih.gov/1130736/ https://pubmed.ncbi.nlm.nih.gov/1130736/

wouldbecouldbe 3y ago

So you would need at least one adult tree per person to make an impact; for most cities that would amount to a forest.

dvdkon 3y ago
That doesn't sound like that much, especially in less-dense cities and if you count "embedded" forests/parks. Looking at local newspaper articles suggests Prague has possibly more than that, but mostly in forests, not on streets. I don't know enough to say if/how much that would help with air quality.
- wouldbecouldbe 3y ago
  I live in a city with trees, an adult tree normally takes up the space of a big block, you can have maybe 20-30 on a space where 400 live if you cover the street. Most likely plants can be more a efficient way. Probably everything fast growing is more oxygen converting, and co2 storing
wouldbecouldbe 3y ago
I did some reddit research, bamboo seems highest oxygen convertor, so plant a few bamboo forest if the climate allows it. Would also look cool
vel0city 3y ago
For my current home I've got 7 trees and several bushes for four people. I don't exactly live in a forest. My neighbor who lives alone has at least four trees on their property.
- wouldbecouldbe 3y ago
  Sir, I envy you, but you are not living in an apartment in a city.

u32480932048 3y ago

Perhaps it's the narcotic effects of nitrogen at 1 atm that make me not give a shit. https://pubmed.ncbi.nlm.nih.gov/1130736/ https://pubmed.ncbi.nlm.nih.gov/1130736/