The world has more than seven times as many trees as previously calculated, new report says

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The world has more than seven times as many trees as previously calculated, new report says Empty The world has more than seven times as many trees as previously calculated, new report says

Post by Ben Reilly on Wed Sep 02, 2015 9:46 pm

Even with billions of trees being cut down every year, a new study estimates there are seven-and-a-half times more trees on Earth than previously believed: 3.04 trillion, to be precise — or roughly 422 trees per person.

An international team of researchers used tree density information from forests around the world, satellite imagery and supercomputer computations to map tree populations worldwide at the square-kilometer level. The results were much higher than expected.

"Trees are among the most prominent and critical organisms on Earth, yet we are only recently beginning to comprehend their global extent and distribution," Thomas Crowther, a postdoctoral fellow at the Yale School of Forestry & Environmental Studies and lead author of the study, said in a statement.

"They store huge amounts of carbon, are essential for the cycling of nutrients, for water and air quality, and for countless human services," he added. "Yet you ask people to estimate, within an order of magnitude, how many trees there are and they don't know where to begin. I don't know what I would have guessed, but I was certainly surprised to find that we were talking about trillions."

The largest forest areas, by far, are in the tropics, which are home to about 43 percent of the world's trees, the researchers found. About 24 percent are in boreal regions and 20 percent in temperate regions.

http://www.nbcnews.com/science/environment/3-trillion-study-finds-many-many-more-trees-previously-estimated-n420456?cid=sm_tw&hootPostID=4e79389423c5e1ef5092006e5baf3920

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Post by Irn Bru on Thu Sep 03, 2015 12:02 am

FGS don't tell anyone that - they'll chop even faster. Smile

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Post by Guest on Thu Sep 03, 2015 12:05 am

You beat me to it, I can see the felling companies rubbing their hands in glee!

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Post by Ben Reilly on Thu Sep 03, 2015 1:20 am

I just thought it was interesting that previous estimates were so wrong. You'd think we'd have a better grip on such a basic fact Smile

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Post by Irn Bru on Thu Sep 03, 2015 1:27 am

Ben_Reilly wrote:I just thought it was interesting that previous estimates were so wrong. You'd think we'd have a better grip on such a basic fact Smile

It is Ben. The margin is astonishing though in that it's 7 times more. That's a huge difference.

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Post by veya_victaous on Thu Sep 03, 2015 1:35 am

"We've nearly halved the number of trees on the planet, and we've seen the impacts on climate and human health as a result," Crowther said. "This study highlights how much more effort is needed if we are to restore healthy forests worldwide."


I think they may have defined the minimum standard of tree differently
the original estimate only included large top canopy trees that could be counted from Satellite images
this new one includes the smaller lower canopy trees in the number, it uses a average per square km to reach its conclusion.


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Post by Guest on Thu Sep 03, 2015 7:57 am

7 times more trees, great news! The world has more than seven times as many trees as previously calculated, new report says Tree_h10

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Post by Guest on Thu Sep 03, 2015 8:31 am

feelthelove wrote:7 times more trees, great news! The world has more than seven times as many trees as previously calculated, new report says Tree_h10


Very good news for the doggies.The world has more than seven times as many trees as previously calculated, new report says <a href=The world has more than seven times as many trees as previously calculated, new report says Doggie12" />

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