01639naa a2200229 a 450000100080000000500110000800800410001902400540006010000200011424501420013426000090027652008880028565300090117365300270118265300370120965300220124670000230126870000190129170000190131070000180132977300620134713392392021-10-27       2008    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1016/j.apsoil.2007.09.0042DOI1 aABOIM, M. C. R.  aSoil bacterial community structure and soil quality in a slash-and-burn cultivation system in Southeastern Brazil.h[electronic resource]  c2008  aThis paper presents a novel analytical framework to assess soil quality, incorporating bacterial community structure data derived from PCR-DGGE analysis into a principal component analysis, along with a total of 23 other physical, chemical, and biotic soil variables. This framework was applied to a slash-and-burn agricultural system in the Atlantic forest region of Rio de Janeiro. Cropped fields had significantly reduced soil aggregation indices and organic carbon contents, as well as increased impacts on their soil bacterial community structure, relative to forest fragments. The results demonstrate the applicability of the soil quality analytical framework proposed, and reveal that traditional shifting cultivation practices in the area studied are compatible with conservation of soil quality, provided that the fallow plots are maintained for periods longer than 5 years.  aDGGE  aDiversidade microbiana  aIndicadores de qualidade do solo  aQualidade do solo1 aCOUTINHO, H. L. C.1 aPEIXOTO, R. S.1 aBARBOSA, J. C.1 aROSADO, A. S.  tApplied Soil Ecologygv. 38, n. 2, p. 100-108, Feb. 2008.