Resumen

RUMPEL, Cornelia. DOES BURNING OF HARVESTING RESIDUES INCREASE SOIL CARBON STORAGE?. R.C. Suelo Nutr. Veg. [online]. 2008, vol.8, n.2, pp.44-51. ISSN 0718-2791.  http://dx.doi.org/10.4067/S0718-27912008000200006.

The influence of 31 years of stubble burning on the carbon storage as well of chemical composition of soil organic matter (SOM) was studied in agricultural soil of a long-term field experiment. Additionally, the potential of black carbon (BC) produced by burning of harvesting residues, to be lost by horizontal as well as vertical transport was quantified during a rainfall simulation experiment. Our results show that 31 years of stubbie burning as a regular agricultural practice did not change carbon storage or the chemical composition of SOM. This is most likely due to a small quantitative input of highly stable aromatic carbon into the soil. A significant portion of BC deposited on the soil surface by the fire may have been exported from the site as shown during the rainfall simulation experiment.

Palabras clave : Black carbon; stubble burning; soil organic C.

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