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Earth

Climate Change Is Turning Trees Into Gluttons (phys.org) 107

Hmmmmmm shares a report from Phys.Org: Trees have long been known to buffer humans from the worst effects of climate change by pulling carbon dioxide from the atmosphere. Now new research shows just how much forests have been bulking up on that excess carbon. The study, recently published in the Journal Nature Communications, finds that elevated carbon dioxide levels in the atmosphere have increased wood volume -- or the biomass -- of forests in the United States. Although other factors like climate and pests can somewhat affect a tree's volume, the study found that elevated carbon levels consistently led to an increase of wood volume in 10 different temperate forest groups across the country. This suggests that trees are helping to shield Earth's ecosystem from the impacts of global warming through their rapid growth.

Over the last two decades, forests in the United States have sequestered about 700-800 million tons of carbon dioxide per year, which, according to the study, accounts for roughly 10% to 11% of the country's total carbon dioxide emissions. While exposure to high levels of carbon dioxide can have ill effects on natural systems and infrastructure, trees have no issue gluttoning themselves on Earth's extra supply of the greenhouse gas. To put it in perspective, if you imagine a tree as just a huge cylinder, the added volume the study finds essentially amounts to an extra tree ring. Although such growth may not be noticeable to the average person, compared to the trees of 30 years ago, modern vegetation is about 20% to 30% bigger than it used to be. If applied to the Coast Redwood forests -- home to some of the largest trees in the world -- even a modest percentage increase means a lot of additional carbon storage in forests. Researchers also found that even older large trees continue adding biomass as they age due to elevated carbon dioxide levels.
"Forests are taking carbon out of the atmosphere at a rate of about 13% of our gross emissions," said Brent Sohngen, co-author of the study and professor of environmental and resource economics at The Ohio State University. "While we're putting billions of tons of carbon dioxide into the atmosphere, we're actually taking much of it out just by letting our forests grow."
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Climate Change Is Turning Trees Into Gluttons

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  • Save the Amazon! (Score:4, Insightful)

    by mspohr ( 589790 ) on Sunday October 02, 2022 @03:27PM (#62931337)

    Except we are deforesting the Amazon much faster than the rest of the forests can sequester CO2.
    Also, cutting down forests for livestock pasture is a global problem.

    • Re: (Score:3, Funny)

      by hdyoung ( 5182939 )
      Shut up with your reason, logic and science. We’ll have none of it here. How dare you point out that burning 100 gigatons of carbon and sequestering 13 gigatons still results in 87 excess carbon in the atmosphere.

      La la la la la la la la. This is simply more proof that global warming is a yyyuuggee rigged liberal hoax! Oops, I forgot to mention “woke”.

      (Hope you can detect the sarcasm).
      • (Hope you can detect the sarcasm).

        Whoever modded you down failed to notice the sarcasm.

      • What's the optimal percentage of CO2 in the atmosphere?
    • Re:Save the Amazon! (Score:5, Interesting)

      by jacks smirking reven ( 909048 ) on Sunday October 02, 2022 @03:44PM (#62931377)

      Really in a way that is being decided today with the Brazilian elections.

      Lula is far from perfect but he's a far cry better for the Amazon than Bolsanaro who pretty much has an explicit directive to continue taking more of it down.

      • Looking like it's going to a second round of voting at the end of the month so I learned something about the Brazilian election system, that it is better than the Electoral College.

        • by dryeo ( 100693 )

          It means a month of violence while the incumbent basically says that he won't recognize a loss along with a small chance the military will support Bolsanaro.
          Democracy seems to be failing all over the world with minority's doing their best to stay in power.

    • Unless you are out there clear-cutting with the rest of the ranchers, no, you aren't deforesting the Amazon. Nor are many (any) of the posters here. Get a grip.

    • Instead of trying to save the Amazon why not turn the midwest back into the forests it was before the native Americans burned it down to create bison pasture. Buying up all those flyover states and turning them into a nature preserve will cost less than the agricultural subsidies paid to farming agro corporations to monoculture farm the land with corn which is then turned into biofuel and HFCS. Nobody really needs that corn for food and it costs the taxpayers a butt load of money in subsidies. Plus move the
  • by devslash0 ( 4203435 ) on Sunday October 02, 2022 @03:46PM (#62931383)

    Create a new drug based on CO2 which gives a greater high than any other drug on the market. All the smack heads will clean up the world for us while feeling good about it.

  • by Dr. Bombay ( 126603 ) on Sunday October 02, 2022 @03:58PM (#62931415) Homepage

    If trees are growing faster and larger while growing weaker tissue this could lead to premature failure of the trees structure.

    • by dgatwood ( 11270 )

      On the flip side, it means that softwood trees for paper will also grow faster, which makes paper cheaper, and because we tend to bury that in the ground, where it sequesters carbon long-term, faster growth is great.

      Of course, one could also argue that global warming is in part caused by the decline of newspapers.... :-)

      • by dryeo ( 100693 )

        Depends on the fibre quality. Too fast growth might result in fibre that is crap. Really it likely depends on other nutrients availability.

    • Would not trees falling over in the wind, or whatever is the last straw to cause them to keel over, lead to spreading of seeds and expose land to sunlight by their leaves no longer being above it? The trees may fall over sooner but the forest spreads faster. No doubt some natural selection will take place to compensate one way or another. Trees that die sooner adds more generations in a given amount of time for mutations to spread more quickly. With an increase in the rate of natural selection we could

    • Can't find the source at the moment, but on a woodworking forum about 10 years ago I'd read some industry documentation from back then talking about the decline in lumber quality noticeable even then, and how building schedules (e.g. how far a 2x12 of SYP is rating to span and so on) might need revised if the trend continued. I doubt the tree is significantly weaker as far as being a tree is concerned, but you're right that the strength of the derived products is impacted.
  • Welcome our carbon-bulked o-verdure ...

  • So basically (Score:5, Interesting)

    by 93 Escort Wagon ( 326346 ) on Sunday October 02, 2022 @04:05PM (#62931431)

    It would seem that, at least for the trees in question, the availability of carbon dioxide has been the limiting factor in photosynthesis. This doesn't seem too surprising; anecdotally I remember reading, years ago, about a gardener who had a still for making moonshine at one end of his greenhouse. The plants nearer the still were consistently larger and more lush, and the speculation was it was due to excess carbon dioxide being generated as the mash broke down.

    • I'll give you one better.

      ADM once setup a large industrial greenhouse fed on the exhaust of an ethanol plant (CO2). Not only did the plants flush under the much higher CO2, they found a "sweet spot" high level where people could be in the building, but where most bugs (and their lack of lungs) would suffocate. No pesticides required.

      Yes, they took it down after a few years.

      Can't help but wonder if it worked too well and went across too many established narratives.

    • by dryeo ( 100693 )

      Can be the limiting factor in photosynthesis. They need enough other nutrients to be healthy. Good fertile soil and extra CO2, more growth. Shitty soil, not so much, they get spindly and weak.
      The greenhouse would be ideal for adding CO2 for growth.

  • hydrocarbons and you've got yourself a nice tidy package.

    • Now figure out a way to turn trees into hydrocarbons and you've got yourself a nice tidy package.

      How is this trolling? Seems quite insightful to me. We've had proponents of bio-mass fuels discuss this as a possible solution to global warming for some time. Perhaps not this exact solution but certainly similar things like ethanol from cellulose, or aviation fuels from algae. Trees make cellulose, don't they? Cellulose into hydrocarbons is a thing, isn't it? Figure that out so we get the costs down and we got something useful for replacing petroleum as a fuel source. Trees growing faster would def

  • Fat Trees (Score:5, Funny)

    by clambake ( 37702 ) on Sunday October 02, 2022 @04:19PM (#62931461) Homepage

    I knew the obesity epidemic was getting out of hand, but this is ridiculous.

  • It is a more effective action against climate change in the short term to keep a mature tree standing than to plant a new one?

    I think it could also be cheap, depending more on the social and political climate in the local area than anything else.

    Not that we shouldn't also plant new trees, and to choose the most eco-friendly building materials when possible (which might be wood).

  • They can use co2 cylinders than they have needed in the past.

    https://www.leafly.com/news/gr... [leafly.com]
  • Burn them suckers in steam locomotives or tree burning power plants, extracting energy shoving carbon into the air... add sunlight and water, and new trees suck the carbon out of the air to produce new bigger trees...

    Turns out, we have a "carbon cycle" here on Earth...who'da thunk it? (well, aside from people who are old enough to have a basic science education before things went "woke" and things like carbon cycles and water cycles were replaced by 57 genders...)

    Actually, even petroleum is a "renewable" an

  • I have also noticed plants and trees are greener... aka it appears trees have more leaves than in past years and weeds and grass is growing lusher as well. However readers remem ber that if we keep increasing CO2 there will come a point where plants can no longer assist and Earth will likely turn into another Venus so this experiemnt should be ended by slashing oil usage ASAP.

  • they'll say the trees will just absorb all the CO2 they are producing.
  • by d3sm0 ( 7574926 )
    Some good news for once on climate change. Usually its gloom and doom constantly.
  • Good news: Trees getting fatter! Bad news: Fatter trees burn longer, generate more heat!
  • "We're just gonna keep cutting them down and building oil palm plantations." -Humanity
  • Now all we need to do is stop destroying the remaining forests.

    • The moment you stop farming, trees come up like weeds and 20 years later there nothing left of abandoned farm and village buildings. Since the end of inefficient communism, huge tracts of Europe have returned to forest.
  • by TractorBarry ( 788340 ) on Monday October 03, 2022 @06:34AM (#62932749) Homepage

    I've been thinking about this sort of thing occassionaly. If there's more carbon dioxide in the atmosphere that will naturally give more opportunity for plant growth. More plant growth means more oxygen is released into the atmosphere. And what's the limiting factor on insect growth ? The amount of oxygen available. Insects absorb oxygen through their bones (look up "spiracles" if you're interested) They don't have lungs so the amount of oxygen they can take in is determined by the amount in the atmosphere. The more that's available the bigger the insects can grow.

    There are fossil records from the Carboniferous period (where there was much more oxygen in the atmosphere) of insects named "Griffinflies" (simlar to Dragonflies) which had wingspans of up to 70cm (28 inches for you USAians).

    Now imagine a world where wasps, ants, hornets etc. grow to a similar size. That will make things "interesting" :)

    • At least I could see the mosquitos to kill them then. :) All you need is a good tennis racket to take of the bugs. Or I've got a tennis racket with a zapper built into it, although I'd probably have to beef up the zapper for larger bugs ... maybe a Binford-9000 for more power! :)
  • If we can just get everyone to live in a tree house we can increase that to 40% and we can finally defeat.... 40% of climate change.
  • Any plant will sequester co2, as long as it is not burned. https://co2coalition.org/facts... [co2coalition.org]
  • 80% of our carbon issues is the fact that we have cut down 80% of our global forests to make grazing land which we then re-pave to make housing developments.

    Gee, ya thunk, all of us who have been saying this problem would be significantly minimalized if we were to restore forestation and vegetation.

  • Plant a tree.

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