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Not industry, not cars, but 75% of that smog was from wood burning stoves.
What type of stove though? Norway has a similar problem, but the majority of wood stoves / fires there are either open fires or older closed wood stoves which emit a lot of particulates. They are trying to get everyone to upgrade to modern wood burners, which are supposed to be much cleaner.
So you offset the gas by growing trees, but because you only have to plant half as many trees (compared to wood) you can use the saved space to plant more trees and take out some existing atmospheric CO2. If you use the harvested wood for building materials, insulation, etc, you have sequestered more C02 than you produced from the gas in the first place, hence carbon negative.
Not sustainable long term though, as eventually the woods are full and you're still extracting and burning fossil fuels year on year.
Not sustainable long term though, as eventually the woods are full and you're still extracting and burning fossil fuels year on year.
You harvest the wood and sequester the CO2 by using the timber to manufacture other products (like building materials, insulation, etc) so it is not released back to the atmosphere. The forest space is released to repeat the process.
In the [b]very[/b] long term, the wood products will decay and release CO2, but this would be part of a long term move to non fossil or wood fuelled energy.
If we could harvest the hot air and expended energy from all you chat forum warriors, our heating problems would be solved.