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polyaromatic structure of black carbon (Haumaier and Zech, 1995; Glaser
et al ., 1998), it is chemically and microbially resistant and survives in the
environment over thousands of years (Glaser, 1999). Therefore, charring
transforms a labile carbon pool into stable SOM. Partial oxidation
produces aromatic acids, which increase the CEC and also the reactivity
and solubility of black carbon. Therefore, the application of black carbon
together with inorganic nutrients as sustainable soil conditioner seems very
promising to improve food production on infertile soils of the humid
tropics.
References
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Zech, W., Haumaier, L. and Hempfling, R. (1990) Ecological aspects of soil
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