For me the interaction of charcoal with SOM is one of the main (Four?) pillars of Terra preta farming and gardening
Yet research on this is equivocal. Some say char speeds up the processes of CO2 release from the soil SOM and this precludes charcoal being used to ameliorate Global warming. Others claim the opposite. Others just say we need more research (fence sitters
).
If TP is going to be promoted as a strategy for reducing Global Warming this important question needs to be addressed
Any thoughts?
Watch this space.
Quote:
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Of the roughly 1,500 Gt of C stored in organic matter in soils, an estimated 250-530 Gt resides in C pools with turnover times of decades or less. Models extrapolating the response of the fast-cycling soil C pool on the global scale show its importance in affecting atmospheric CO2. A great deal of work remains to be done to improve our assessments of the role of soils in the global C cycle.
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Potential responses of soil organic carbon to global environmental change -- Trumbore 94 (16): 8284 -- Proceedings of the National Academy of Sciences
