To make the question clearer: it'd be good to understand the relative percentage contribution of microbial respiration versus fire versus human use vs [etc].
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My understanding is that when trees die, the CO2 they store is by default returned to the atmosphere. Does anyone know the mechanism, preferably with a credible source? (Trying to better understand trees as a negative emissions technology.)
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My searches haven't yielded an answer, but I'm sure it's been estimated. I have a bad feeling I've seen the estimate, & forgotten it...
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the microbial respiration & decomposition step of the carbon cycle https://earthobservatory.nasa.gov/features/CarbonCycle …pic.twitter.com/4lE1nvzdk5
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Thanks. I'd guessed that was the case, but it's great to have a credible source!
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Highly recommend this related read btw:https://www.nytimes.com/2018/04/18/magazine/dirt-save-earth-carbon-farming-climate-change.amp.html …
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How it gets there (as CO2 or as methane, eg burning vs rotting) and how fast, makes a difference.
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well slowly primarily via microbial respiration i presume
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Whats why it is better to chop them down and turn into furniture or some other long-term carbon sink
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Trees for negative emissions: look up biochar carbon capture. Basically store the wood, protected from decay, or turn it into charcoal (smaller, lighter, more stable) and store. Trees in some places may also help to build up soils, which are also an important store of carbon.
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we also use them as construction material, furniture, etc, but as long as we don't stop digging up carbon and burning it, every "capture" method will be useless, we are burning what took nature millons of years to store
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