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Scale effects on runoff and erosion losses from arable land under conservation and conventional tillage: The role of residue cover

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Scale effects on runoff and erosion losses from arable land under conservation and conventional tillage: The role of residue cover

In: Journal of hydrology (Amsterdam), 2010, Vol.390(3), pp.143-154
Autor: Leys, Annemie , Govers, Gerard , Gillijns, Katleen , Berckmoes, Els , Takken, Ingrid
Ort, Verlag, Jahr: , Elsevier B.V, 2010
ISBN/ISSN/ISMN: 0022-1694
Kollektion: ScienceDirect (Elsevier)
Erscheinungsform: article

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Autor:Leys, Annemie
Autor:Govers, Gerard
Autor:Gillijns, Katleen
Autor:Berckmoes, Els
Autor:Takken, Ingrid
Titel:Scale effects on runoff and erosion losses from arable land under conservation and conventional tillage: The role of residue cover
Verlag:Elsevier B.V
Jahr:2010
ISBN/ISSN/ISMN:0022-1694
Sprache:eng
Zusammenfassung:<p>A literature survey as well as our own observations on runoff and soil losses measured under conventional and conservation tillage ( CT) show that differences in runoff and erosion between both tillage techniques are scale-dependent: the difference in runoff and erosion response between conservation and conventional tillage increases with the length of the plot/field considered. The relative scale effect is more important for erosion than for runoff. </p> <p>The scale effect implies that plot measurements may lead to an underestimation of the effectiveness of conservation tillage in reducing runoff and erosion at the field or catchment scale. We tested experimentally the hypothesis that this scale-dependency can (partly) be explained by the occurrence of runoff transmission losses along the hillslope. In a 2.3 m long soil tray, filled with a silty loam soil, a seedbed was simulated and covered with different amounts of straw and maize residues. Our data showed...
Kollektion:ScienceDirect (Elsevier)
In:Journal of hydrology (Amsterdam), 2010, Vol.390(3), pp.143-154
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