The Treeflights blog

Two chaps with a passion for trees in dotcom startup drama

Saturday, October 28, 2006

More wonderful facts about trees and CO2


I've Just found this piece on carbon fixation by our friends, the trees. it turns out that when you take the oxygen into account the tree is actually fixing an amount of CO2 that is more than its own weight!
It comes from the National Science foundation so perhaps we can believe it?

'..We find that about 45% of the dry mass (not including the water) of a tree comes from carbon. In other words,
a 100 Kilogramm log of a tree that has been completely dried contains about 45 kilograms of stored carbon.

While each kilogram of dried tree is storing .45 kilograms of carbon, it is removing more than a kilogram of carbon dioxide from the atmosphere. This is because each carbon dioxide molecule contains two oxygen atoms....
this means that each CO2 molecule has an atomic mass of 12+2(16)=44, of which only 12 are due to the carbon. Therfore, for each atom of carbon stored in the tree, 44 atomic mass units of CO2 is removed from the atmosphere. This means that each kilogram of dried tree corresponds to-

(1kg of dried tree) x (.45 kg of C/1 kg) x 44 amu of CO2/12 AMU of C) = 1.65 kg of CO2.'

AMU= Atomic Mass Units.

From- ESA 21, National Science foundation.
http://esa21.kennesaw.edu/activities/trees-carbon/trees-carbon.pdf

3 Comments:

At 7:59 PM, Anonymous Anonymous said...

the trees will save us if we let them.

 
At 10:46 AM, Anonymous karen Langley said...

I am really interested in this calculation as there is a lot conflicting information around how much a tree absorbs. I've looked on the NSF website but can find no reference to the article you mention.

It would be really useful and would add credability to the cause if you would publish the full link to the article.

Cheers

John

 
At 11:44 AM, Blogger old silverback said...

Here's the source-
http://esa21.kennesaw.edu/activities/trees-carbon/trees-carbon.pdf

 

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