There is very much a conservation of matter thing here that you have to consider. The dry weight of a tree, no matter age or size, is almost completely carbon fixed from atmospheric CO2.
The only thing that would matter for tree age is the rate of carbon fixation is probably not linear with age/size. I’m not sure how well studied that is for the specific pine/fir species that we use in this application.
Either way, even if you cut your grass and stored in an anaerobic env you would be doing some small amount of carbon sequestration.
Re: greenwashing, all trees are carbon neutral over the life of the tree. If they die in a year, neutral; if they life for a century, neutral. Planting trees is not a carbon solution. You either have to bury dead trees or stop digging up millennia old dead trees (and algae). Those are the only two options. Every thing else is just for show.
Surely that must be a quite unpopular view. There are so many tree planting efforts. If that’s a sham (i.e. not carbon negative as advertised), why isn’t this getting a big spotlight? Ecosia is advertising they plant trees proportional to the number of search queries they get. And people buy into that.
It sounds right in theory, but you have to consider the planting and transportation costs. Plants that grow for longer absorb more carbon, and the petrol cost associated with tractor tilling, planting, spraying pesticide and fertilizer are proportionally lower compared to the volume of carbon absorbed by growth. Claiming buried evergreen trees are carbon sinks ignores all of the carbon set-up costs associated with establishing the trees. I’d believe it if we made tannenbaum out of bamboo and algae, but I’d have to see more data to believe Christmas tree growth was a carbon sink.
Moving it from the tree farm to the city, store to home, home to waste collection, waste collection to landfill is another practical carbon release. Landfills are real-estate, also a limited resource. While material decays much more slowly, preserving carbon not the intention of landfills. Modern landfills do account for or encourage the release of decay gasses and burn them off or tap them for power. They release the carbon dioxide is slower than incinerators (the much more likely destination for used trees) but probably not on a slow enough scale to make a geological impact.
You are correct that tree growth is carbon neutral, and something additional must be done to prevent decay and sequester the carbon. Simply growing trees to maturity and then sequestering them as bio-char on-site is more likely to result in net sequestered carbon.
There is very much a conservation of matter thing here that you have to consider. The dry weight of a tree, no matter age or size, is almost completely carbon fixed from atmospheric CO2.
The only thing that would matter for tree age is the rate of carbon fixation is probably not linear with age/size. I’m not sure how well studied that is for the specific pine/fir species that we use in this application.
Either way, even if you cut your grass and stored in an anaerobic env you would be doing some small amount of carbon sequestration.
Re: greenwashing, all trees are carbon neutral over the life of the tree. If they die in a year, neutral; if they life for a century, neutral. Planting trees is not a carbon solution. You either have to bury dead trees or stop digging up millennia old dead trees (and algae). Those are the only two options. Every thing else is just for show.
Surely that must be a quite unpopular view. There are so many tree planting efforts. If that’s a sham (i.e. not carbon negative as advertised), why isn’t this getting a big spotlight? Ecosia is advertising they plant trees proportional to the number of search queries they get. And people buy into that.
It sounds right in theory, but you have to consider the planting and transportation costs. Plants that grow for longer absorb more carbon, and the petrol cost associated with tractor tilling, planting, spraying pesticide and fertilizer are proportionally lower compared to the volume of carbon absorbed by growth. Claiming buried evergreen trees are carbon sinks ignores all of the carbon set-up costs associated with establishing the trees. I’d believe it if we made tannenbaum out of bamboo and algae, but I’d have to see more data to believe Christmas tree growth was a carbon sink.
Moving it from the tree farm to the city, store to home, home to waste collection, waste collection to landfill is another practical carbon release. Landfills are real-estate, also a limited resource. While material decays much more slowly, preserving carbon not the intention of landfills. Modern landfills do account for or encourage the release of decay gasses and burn them off or tap them for power. They release the carbon dioxide is slower than incinerators (the much more likely destination for used trees) but probably not on a slow enough scale to make a geological impact.
You are correct that tree growth is carbon neutral, and something additional must be done to prevent decay and sequester the carbon. Simply growing trees to maturity and then sequestering them as bio-char on-site is more likely to result in net sequestered carbon.