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Title

Survival of pyrogenic organic C in Brazilian grassland soils

AuthorsKnicker, Heike ; Dick, D. P.; Dalmolin, R. S. D.
Issue Date2008
PublisherCopernicus Publications
CitationGeophysical Research Abstracts 10: A-03738 (2008)
AbstractAnnual burning of grasslands is a common practice to remove old vegetation and to stimulate regrowth of the vegetation. This practice is often criticized for accelerating soil degradation, losses of soil organic matter (SOM) and increasing Cemission and air-pollution. On the other hand, a part of the released carbon will return to the biosphere by rain and increased photosynthetic activity. Additionally, as charcoal accumulating in and on the soil after incomplete combustion represents one of the most resistant forms of reduced organic matter, burning is assumed to increase the slow-cycling SOM pool. But, recently it was shown that with prolonged recovery time after ceasing annual burning in grassland soils the typical char pattern ............(Golchin et al., 1997) is lost for the A horizon within the first 20 to 30 years.
DescriptionComunicación oral SSS5-1MO2O-004.-- Congreso celebrado del 13-18 de abril 2008, en Viena, Austria.
URIhttp://hdl.handle.net/10261/83869
Appears in Collections:(IRNAS) Comunicaciones congresos
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