[Stoves] [biochar] Capturing carbon in the timber industry

[Tom Miles]

We have burned plantation residues in industrial boilers in New Zealand. In order to make a clean fuel the nutrient laden bark, limbs and branches are pretty well stripped and left in the soil. I think that amounts to about 20% of the total biomass. 

 

Tom

 

From: stoves-bounces at lists.bioenergylists.org [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Kevin
Sent: Saturday, December 18, 2010 8:31 PM
To: biochar at yahoogroups.com
Cc: Biochar-production; Discussion biomass
Subject: Re: [Stoves] [biochar] Capturing carbon in the timber industry

 

Dear John

 

Leaving the tops, limbs, and stump on site after harvesting is probably a good thing, especially if the slash is driven over by the harvesting machinery. Crushing it down helps it to return organic matter to the soil, and minimize the fire hazard if it is allowed to dry without contact with the ground.

 

Something like 90% of the nutrients in a tree are in the branches and leaves or needles, and it is a big mistake to remove them from the site. It can lead to rapid nutrient depletion. Removing the stumps for their biomass loosens the ground excessively, and can aggravate possible erosion problems. 

 

"Natural" stands, in contrast to plantations, invariably have a range of tree species, some of which have commercial value, and some of which don't. It makes sense to harvest the "unmerchantable stems" for fuel or charcoaling purposes. However, leaving the tops, limbs,  leaves/needles and stumps seems to be a good step toward sustainable forest management.

 

Best wishes,

 

Kevin Chisholm

 

----- Original Message ----- 

From: John Nissen <mailto:jn at cloudworld.co.uk>  

To: biochar at yahoogroups.com 

Cc: Ron Larson <mailto:rongretlarson at comcast.net>  ; Biochar-production <mailto:Biochar-production at yahoogroups.com>  ; Discussion biomass <mailto:stoves at lists.bioenergylists.org>  ; Ron Larson <mailto:rongretlarson at comcast.net>  

Sent: Saturday, December 18, 2010 6:21 PM

Subject: [biochar] Capturing carbon in the timber industry

 

  


Hi all,

I've just had a month's holiday in New Zealand, where forestry is big 
business, and was horrified by the way they apparently left wood debris 
on the ground after taking the timber away. They also left stumps in 
the ground to rot away. Has any thought been given into capturing the 
carbon left after the timber is removed? It must be a major source of 
CO2 and methane.

Cheers,

John

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