Dear Rajan, does not composting also release Methan (CH4), which is considered as the culpit of climate change gazes?
The taiga in Sibiria is melting down and has started giving Methan to our atmosphere coursing a raising temperature and climate change leaving the Northern Passage open for shipstraffic this year for the first time in historie. Otto > From: [email protected] > Sent: 2010-09-15 17:43:43 MEST > To: Roger Samson [[email protected]] > Cc: stoves [[email protected]] > Subject: Re: [Stoves] The Biochar myth..another stovers myth > > Dear Roger, > > ----- Original Message ----- > From: "Roger Samson" <[email protected]> > To: "'Discussion of biomass cooking stoves'" <[email protected]>; > <[email protected]> > Sent: Wednesday, 15 September, 2010 07:47 PM > Subject: RE: [Stoves] The Biochar myth..another stovers myth > > > > > Yes Crispin is correct that is another stovers myth is that biochar saves > > trees. Energy lost in carbon buried is carbon borrowed from another > > source. > > Biochar can be used as fuel or soil nutrient or some other purpose according > to somebody's choice. > > "Saving of trees" happens when we "stop cutting the trees". Personally, I am > very much against unreasonable cutting of trees. > > My main points are as follows: > > 1. Use residues for fuel instead of cutting trees. > 2. If charcoal from residues is used as soil nutrient, the process is > carbon-negative. > 3. If charcoal from residues is burnt as fuel, the process is carbon > neutral. > 4. If somebody is cutting trees for fuel ( without proper replacement ), > the process is carbon-positive - contributing to global warming, etc. This > is precisely what is happening today - see how forests disappear. > > > > > It's the lignin fraction in biomass (trees, grasses roots etc) that is not > > readily decomposed when added to soils. Lignin can be considered the most > > important relatively stable C fraction in plants that is not readily > > decompsoed. Phytoliths in grasses are also an important carbon source for > > forming soils. The grassland soils of the world (chernozems etc) are > > formed > > as a result of years of deposition of phytoliths We can grow grasses and > > pelletize them and create both improved soils and lots of clean bunring > > high > > yielding fuel. > > > To my knowledge, carbon from biochar remains in the soil as carbon for much > longer time - compared to carbon present in compost ( which gets converted > into CO2 ). Please correct me if I am wrong. > > Best Regards, > > > Rajan > > > > _______________________________________________ > Stoves mailing list > [email protected] > http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org > http://stoves.bioenergylists.org > http://info.bioenergylists.org > > UNSUBSCRIBE HERE; > http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org >
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