Interrill erosion on cultivated Greek soils: Modelling sediment delivery

dc.contributor.author	Dimoyiannis, D	en
dc.contributor.author	Valmis, S	en
dc.contributor.author	Danalatos, NG	en
dc.date.accessioned	2014-06-06T06:47:08Z
dc.date.available	2014-06-06T06:47:08Z
dc.date.issued	2006	en
dc.identifier.issn	01979337	en
dc.identifier.uri	http://dx.doi.org/10.1002/esp.1302	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3411
dc.subject	Cultivated soils	en
dc.subject	Greece	en
dc.subject	Interrill erosion	en
dc.subject	Modelling	en
dc.subject	Runoff	en
dc.subject	Sediment delivery	en
dc.subject.other	Correlation methods	en
dc.subject.other	Kinetic energy	en
dc.subject.other	Mathematical models	en
dc.subject.other	Rain	en
dc.subject.other	Runoff	en
dc.subject.other	Sediment transport	en
dc.subject.other	Sediments	en
dc.subject.other	Soils	en
dc.subject.other	Cultivated soils	en
dc.subject.other	Interrill erosion	en
dc.subject.other	Rain kinetic energy	en
dc.subject.other	Sediment delivery	en
dc.subject.other	Erosion	en
dc.subject.other	Correlation methods	en
dc.subject.other	Erosion	en
dc.subject.other	Kinetic energy	en
dc.subject.other	Mathematical models	en
dc.subject.other	Rain	en
dc.subject.other	Runoff	en
dc.subject.other	Sediment transport	en
dc.subject.other	Sediments	en
dc.subject.other	Soils	en
dc.subject.other	experimental study	en
dc.subject.other	interrill erosion	en
dc.subject.other	raindrop	en
dc.subject.other	rainfall-runoff modeling	en
dc.subject.other	sediment analysis	en
dc.subject.other	sediment transport	en
dc.subject.other	sheet flow	en
dc.subject.other	Eurasia	en
dc.subject.other	Europe	en
dc.subject.other	Greece	en
dc.subject.other	Southern Europe	en
dc.title	Interrill erosion on cultivated Greek soils: Modelling sediment delivery	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/esp.1302	en
heal.publicationDate	2006	en
heal.abstract	For interrill erosion, raindrop-induced detachment and transport of sediment by rainfall-disturbed sheet flow are the predominant processes, while detachment by sheet flow and transport by raindrop impact are negligible. In general, interrill subprocesses are inter-actively affected by rainfall, soil and surface properties. The objective of this work was to study the relationships among interrill runoff and sediment loss and some selected parameters, for cultivated soils in central Greece, and also the development of a formula for predicting single storm sediment delivery. Runoff and soil loss measurement field experiments have been conducted for a 3.5-year period, under natural storms. The soils studied were developed on Tertiary calcareous materials and Quaternary alluvial deposits and were textured from sandy loam to clay. The second group of soils showed greater susceptibility to sealing and erosion than the first group. Single storm sediment loss was mainly affected by rain and runoff erosivity, being significantly correlated with rain kinetic energy (r = 0.64*), its maximum 30-minute intensity (r = 0.64) and runoff amount (r = 0.56). Runoff had the greatest correlation with rain kinetic energy (r = 0.64). A complementary effect on soil loss was detected between rain kinetic energy and its maximum 30-minute intensity. The same was true for rain kinetic energy and topsoil aggregate instability, on surface seal formation and thus on infiltration characteristics and overland flow rate. Empirical analysis showed that the following formula can be used for the successful prediction of sediment delivery (Di): Di = 0.638β6EI30tan(θ) (R2 = 0.893**), where β is a topsoil aggregate instability index, E the rain kinetic energy, I30 the maximum 30-minute rain intensity and θ the slope angle. It describes soil erodibility using a topsoil aggregate instability index, which can be determined easily by a simple laboratory technique, and runoff through the product of this index and rain kinetic energy. Copyright © 2006 John Wiley & Sons, Ltd.	en
heal.journalName	Earth Surface Processes and Landforms	en
dc.identifier.issue	8	en
dc.identifier.volume	31	en
dc.identifier.doi	10.1002/esp.1302	en
dc.identifier.spage	940	en
dc.identifier.epage	949	en