Journal nature communications, Peer-reviewed journal

Trees buffer humans from the worst effects of climate change by taking out carbon dioxide from the atmosphere; however now new research shows just how much the 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 the 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 in 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."Forests are taking carbon out of the atmosphere at a rate of about 13per cent 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 tonnes of carbon dioxide into the atmosphere, we're actually taking much of it out just by letting our forests grow."This phenomenon is called carbon fertilization: An influx of carbon dioxide increases a plant's rate of photosynthesis, which combines energy from the sun, water, and nutrients from the ground and air to produce fuel for life and spurs plant growth."It's well known that when you put a ton of carbon dioxide in the atmosphere, it doesn't stay up there forever," Sohngen said. "A massive amount of it falls into the oceans, while the rest of it is taken up by trees and wetlands and those kinds of areas."Over the last two decades, forests in the United States have sequestered about 700-800 million tonnes of carbon dioxide per year, which, according to the study, accounts for roughly 10per cent to 11per cent 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 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, Sohngen said. Although such growth may not be noticeable to the average person, compared to the trees of 30 years ago, modern vegetation is about 20per cent to 30per cent 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.Unlike the effects of climate change, which vary over the location and in time, the amount of carbon dioxide in the atmosphere mixes almost evenly, so every place on Earth has nearly the same amount, Sohngen said.So to test whether the chemical compound was responsible for beefing up our biome, Sohngen's team used historical data from the U.S. Forest Service Forest Inventory and Analysis Program (USFS-FIA) to compare how the wood volume of certain forest groups has changed over the past few decades. The study estimates that between 1970 and 2015, there was a significant increase in trees' wood volume, which correlates with a distinct rise in carbon emissions.Researchers were also able to use this method to test whether there were differences in naturally occurring trees versus trees that were planted. Sohngen thought that planted trees would undergo a bigger fertilization effect, as they have an advantage in that planters often pick the best seeds to plant in only the best locations. On the contrary, he was surprised to find that planted trees respond to carbon dioxide levels in the same way natural ones do.Overall, Sohngen said this work shows that the wood volume response to carbon dioxide in our ecosystem is even higher than his colleagues predicted with experimental studies.The results should show policymakers and others the value of trees in mitigating climate change. Sohngen said that carbon fertilization could one day make tree-growing efforts more efficient. For instance, if it costs $50 to plant one acre of trees today, with the help of carbon fertilization, that number could easily be decreased to $40. As climate change costs the United States about $2 trillion each year, that decrease could help drive down the cost of mitigating climate change, Sohngen said."Carbon fertilization certainly makes it cheaper to plant trees, avoid deforestation, or do other activities related to trying to enhance the carbon sink in forests," Sohngen said. "We should be planting more trees and preserving older ones because at the end of the day they're probably our best bet for mitigating climate change."( With inputs from ANI )Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

Home

City

Latest News

Cricket

LT Premium

National

International

Maharashtra

Opinions

Chhatrapati Sambhajinagar

Nagpur

Entertainment

Photos

Business

Technology

Sports

Lifestyle

Social Viral

Lokmat Games

Health

Pahalgam Terror Attack

Tahawwur Rana

IPL 2025

CM Devendra Fadnavis

Mumbai Local

Weather Update

Journal Nature CommunicationsFOLLOW

Journal nature communications, Latest News

Health :Study shows new and more detailed world map of antimicrobial resistance

During the COVID-19 pandemic, the world has become aware of the value of using sewage analyses to monitor disease ... ...

Health :New study sheds light on growth of human triple negative breast cancers

Basal-like breast cancers, also known as triple-negative cancers, are a particularly aggressive subtype of breast cancer with limited treatment ... ...

Technology :Study finds how Immune cells in ALS patients can predict disease

According to a study, when diagnosing ALS, immune cells in the cerebrospinal fluid can be used to predict how ... ...

Health :Researchers reveal how brain-like organoids develop, lead to autism in people

Researchers found that in any case, the seed-sized organoids, which are generated in the lab from human cells, give insights into the brain and reveal variations that may lead to autism in some people. They also advised not to call them "mini-brains ...

Technology :Study suggests climate change is turning trees into gluttons

Trees buffer humans from the worst effects of climate change by taking out carbon dioxide from the atmosphere; however now new research shows just how much the forests have been bulking up on that excess carbon. ...