2003
DOI: 10.1590/s0100-06832003000100016
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Surface and subsurface decomposition of a desiccated grass pasture biomass related to erosion and its prediction with RUSLE

Abstract: SUMMARYErosion is deleterious because it reduces the soil's productivity capacity for growing crops and causes sedimentation and water pollution problems. Surface and buried crop residue, as well as live and dead plant roots, play an important role in erosion control. An efficient way to assess the effectiveness of such materials in erosion reduction is by means of decomposition constants as used within the Revised Universal Soil Loss Equation -RUSLE's prior-land-use subfactor -PLU. This was investigated using… Show more

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Cited by 12 publications
(4 citation statements)
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References 9 publications
(6 reference statements)
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“…Similar behavior was observed by Cogo and Streck (2003), Streck and Cogo (2003), Volk et al (2004), Castro et al (2006) and Gilles et al (2009) in studies on the effects of vegetation cover and soil management on soil erosion. The authors attributed the increased surface flow (higher water loss) to the increased consolidation of the soil surface in more conservationist systems, when compared with the conventional ones.…”
Section: Soil and Water Lossessupporting
confidence: 83%
“…Similar behavior was observed by Cogo and Streck (2003), Streck and Cogo (2003), Volk et al (2004), Castro et al (2006) and Gilles et al (2009) in studies on the effects of vegetation cover and soil management on soil erosion. The authors attributed the increased surface flow (higher water loss) to the increased consolidation of the soil surface in more conservationist systems, when compared with the conventional ones.…”
Section: Soil and Water Lossessupporting
confidence: 83%
“…Field measurements and experiments include the use of rainfall simulations (e.g. Li et al, 1991;Cogo and Streck, 2003), micro erosion plots (e.g. Pierret et al, 2007b), concentrated flow simulations (e.g.…”
Section: Erosion-reducing Potential Of Roots: Mechanisms and Controlling Factorsmentioning
confidence: 99%
“…A seqüência cultural 4Sc,SP/3,5Er-Fm,SD (sem cultivo e sem preparo do solo nos primeiros quatro anos de condução do experimento), apesar do baixo valor de massa de resíduo cultural seco (ervilhacaQuadro 3), apresentou valor de massa de raízes mortas secas correspondente a 70 % do observado no seqüência cultural 4Av-Mi,SD/3,5Av-Mt,SD, nas duas camadas avaliadas do solo. No que se refere aos valores da razão massa de raízes mortas na camada de 10 a 20 cm/massa de raízes mortas na camada de 0 a 10 cm, eles foram baixos, comparados ao valor médio de 0,35 encontrado por Streck (1999) e Cogo & Streck (2003) em pastagem nativa predominantemente constituída de gramíneas, dessecada um mês antes do início de seus estudos. Ressalta-se que os valores da referida razão, obtidos neste estudo, são bastante inferiores aos registrados nos arquivos computacionais do modelo "RUSLE" de predição da erosão hídrica (Renard et al, 1997), nos Estados Unidos da América, que variam de 0,80 a 0,75.…”
Section: Resultsunclassified
“…Ressalta-se que os valores da referida razão, obtidos neste estudo, são bastante inferiores aos registrados nos arquivos computacionais do modelo "RUSLE" de predição da erosão hídrica (Renard et al, 1997), nos Estados Unidos da América, que variam de 0,80 a 0,75. Neste caso, da mesma forma como argumentado por Streck (1999) e Cogo & Streck (2003), as diferenças nos resultados podem ser atribuídas às diferenças no clima, tipo de solo e tipo de cultura entre os dois países.…”
Section: Resultsunclassified