I found this abstract hard to follow. Perhaps something was lost in translation.
It was the consensus feeling at the IAI confrence that charcoal reduced NO2 Emissions from soil
Quote:
Effects of charcoal addition on N2O emissions from soil resulting from rewetting air-dried soil in short-term laboratory experiments
Authors: YANAI, Yosuke1; TOYOTA, Koki2; OKAZAKI, Masanori2
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to me show details 16:25 (4 hours ago)
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"transect points" - 1 new article
The links to global maps are interesting.
Quote:
Soil conference on non-CO2 gas emissions
Researchers at the University of Melbourne are holding a conference to discuss the importance of greenhouse gas emissions from soils.
A major concern is nitrous oxide from fertilizer, manure and biomass applications.
"300 times more potent than CO2, so even small emissions of this non-CO2 gas can make a considerable contribution to global warming” says Dr Stefan Arndt.
“When nitrogen is added to a wheat field as fertilizer or added to a pasture through animal faeces or clover swards, a part of the nitrogen can be lost as nitrous oxide, and when the weather conditions are right this can lead to large emissions of nitrous oxide” says Dr Eckard.
...not widely known [is] that soils can actually [take] methane out of the atmosphere. “Forest soils are especially efficient at taking up methane” says Dr Livesley.
At the present time there is not much knowledge about the magnitude of these non-CO2 emissions...
It is interesting that NO2 isn't more in the news, considering its potential impact and its fascinating pattern of anthropogenicity.
Image source: Greenhouse gases, by Anyday.se
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Nitrous oxide (greenhouse gas) from soil 
