The total amount of carbon present in the Earth is essentially constant. However, the forms and amounts of carbon present in the different geochemical compartments are not constant, and transfers occur, either as a consequence of natural cycles or because of anthropogenic activities. The total atmospheric concentration of carbon dioxide has increased markedly since 1750 as a result of human activities ad now far exceeds pre-industrial values. Given that carbon compounds present in biogeochemical compartments other than the atmosphere do not interfere with the global climate, any processes that can sequester carbon into these compartments are of fundamental relevance.
- Biochar uncouples the atmosphere and terrestrial carbon cycle, as it removes carbon from the cycle in a form that can remain stable for hundreds to thousands of years
- Biochar has other potential environmental and agronomic benefits when applied to soils
- Biochar may halp to reduce waste and return elements to their biogeochemical cycles