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Modelización en Geografía Física.-Modelling water and sediment connectivity patterns in a semi-arid landscape

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dc.contributor.authorCammeraat, Erik
dc.contributor.authorvan Bee, Rens
dc.contributor.authorDooms, Tineke
dc.contributor.otherUniversidad de Murciaes
dc.date.accessioned2020-09-29T15:19:21Z
dc.date.available2020-09-29T15:19:21Z
dc.date.created2009-09
dc.description.abstractABSTRACT Desertification is a major threat in SE Spain and mitigation strategies are required to reduce the adverse effect of water-induced erosion on soil production potential. Severity of soil erosion depends on local runoff response and the connectivity of pathways of water and sediment at different spatial scales. We investigated the connectivity between sources and sinks on semi-natural slopes by means of a semi-distributed model that delineated Hydrological Response Units (HRUs) on the basis of physiographic characteristics. The model was calibrated with information at the plot, hillslope and sub-catchment scale covering the period 1995-2008 and validated against larger events that connected the semi-natural sub-catchment with the underlying cultivated slopes. This approach allowed us to define thresholds at which HRUs transform from sink to source and pathways of water and sediment connect at higher spatial scales. The recognition of the spatio-temporal behaviour of HRUs as sources and sinks is essential for the definition of efficient mitigation strategies that reduce erosion by intervening at strategic points within the catchment. The next step is to improve the skill of the model to reproduce erosive events and deposition over a longer period in the past with more variable meteorological and land cover conditions.es
dc.formatapplication/pdfes
dc.format.extent4es
dc.identifier.urihttp://hdl.handle.net/10201/96710
dc.languageenges
dc.relationSin financiación externa a la Universidad de Murciaes
dc.relation.ispartofCongreso Internacional sobre desertificaciónes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subject.otherCDU::6 - Ciencias aplicadas::63 - Agricultura. Silvicultura. Zootecnia. Caza. Pesca::631 - Agricultura. Agronomía. Maquinaria agrícola. Suelos. Edafología agrícolaes
dc.titleModelización en Geografía Física.-Modelling water and sediment connectivity patterns in a semi-arid landscapees
dc.typeinfo:eu-repo/semantics/otheres
dspace.entity.typePublicationes
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Congreso Internacional sobre Desertificación.