Rising CO2 won't make trees grow more, study suggests
1–10 of 65 posts
Re: Rising CO2 won't make trees grow more, study suggests
#2Re: Rising CO2 won't make trees grow more, study suggests
#3The headline is clearly wrong. Maybe they should have said "current trees". The tree tech has already been invented to circumnavigate present restrictions in tree biological restrictions. Very clickbait-y.
Re: Rising CO2 won't make trees grow more, study suggests
#4Sounds like it's a bit more nuanced than the headline would suggest. More CO₂ only means more growth when CO₂ is the limiting factor on growth in the first place. Water, nutrients, and sunlight all play a role as well.
Re: Rising CO2 won't make trees grow more, study suggests
#5I’ve heard this argument before from climate change deniers. From a laypersons point of view I wonder why would you assume more CO2 makes trees grow more? More oxygen doesn’t make humans grow more, in fact it becomes toxic.
Re: Rising CO2 won't make trees grow more, study suggests
#6I’d be curious how they explain the fact that greenhouses typically add co2 for faster growth?
( disclaimer I believe in global warming with all my heart)
Re: Rising CO2 won't make trees grow more, study suggests
#7Sounds like it's a bit more nuanced than the headline would suggest. More CO₂ only means more growth when CO₂ is the limiting factor on growth in the first place. Water, nutrients, and sunlight all play a role as well.
Bingo. While not usually the limiting factor in nature, it can still be a benefit when it is. Just ask all the 1000s of pot growers literally burning propane to produce it indoors and vent it to atmosphere. Grr.
Re: Rising CO2 won't make trees grow more, study suggests
#8Related: https://www.sciencenews.org/article/rising-co2-levels-might-...
Re: Rising CO2 won't make trees grow more, study suggests
#9I’ve heard this argument before from climate change deniers. From a laypersons point of view I wonder why would you assume more CO2 makes trees grow more? More oxygen doesn’t make humans grow more, in fact it becomes toxic.
Most of the arguments put forth by climate change deniers are argued in bad faith.
Re: Rising CO2 won't make trees grow more, study suggests
#10A number of problems with this method of study, and the headline is misleading.
The real question is whether there will be more biomass and more photosynthesis in response to more CO2, not whether individual trees grow more. The climate skeptics don't say tree trunks will get wider, they say there will be more plant biomass.
And also this is adding in confounding variables and saying more CO2 could change precipitation in certain places, and thus cause lower growth. Other studies that show more growth with more CO2 are using greenhouses to control for confounding variables.
And even if you are trying to answer the question in terms of a holistic analysis, you can't just study one forest in Canada and then make any kind of conclusion.
You'd need to study trees from most of the major forests, and look at the density of the foliage in each.