[ry_co]

This isn't quite right. Technically it's carbon neutral, but the alternative method is carbon negative, as a larger portion of decaying matter will sequester carbon into the soil than would if you didn't burn. So the reality is that this is not carbon neutral compared to the alternative.

Of course, there could be some hidden factor I'm missing, as biological systems are complex.

[ip26]

biochar is actually considered a carbon sink, because the carbon is not readily released, unlike organic carbon.