Water erosion estimation in topographically complex landscapes: Model description and first verifications

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dc.contributor.authorBonilla, Carlos A.
dc.contributor.authorNorman, John M.
dc.contributor.authorMolling, Christine C.
dc.date.accessioned2024-01-10T13:09:56Z
dc.date.available2024-01-10T13:09:56Z
dc.date.issued2007
dc.description.abstractTwo of the most important limitations when predicting soil movement are the natural complexity and the spatial heterogeneity of the processes. Sod erosion can vary significantly across short distances as a function of local soil properties and microtopography; but regardless of this, many erosion models assume homogeneity in topography and soil characteristics. The objective of this research was to develop a method for estimating soil loss from agricultural fields that is faithful to the complex topography and spatial heterogeneity common to managed landscapes. Sediment loss for individual storms was achieved by linking sod detachment-deposition equations adapted from the Water Erosion Prediction Project (WEPP) model to the existing water-flow subroutine in the Precision Agricultural-Landscape Modeling System (PALMS). In PALMS, sediment was routed appropriately in a two-dimensional grid, defining the pathways taken by the eroded material. Usually PALMS works on a grid-cell size of 5 to 20 m and simulates runoff and sod erosion patterns as affected by slope, soil texture, anisotropic surface roughness, soil consolidation, canopy cover, and tillage interactions with topography. In this study, PALMS and WEPP were used to simulate the sediment transport on an idealized field with a complex hillslope profile. Both models showed a consistent soil loss pattern and only minor differences in transport capacities. The models were also compared with data from actual erosion Plots, where both runoff and soil loss were predicted with similar errors for both PALMS and WEPP To illustrate the capability of PALMS, it was applied to a field with complex topography.
dc.format.extent14 páginas
dc.fuente.origenWOS
dc.identifier.doi10.2136/sssaj2006.0302
dc.identifier.issn0361-5995
dc.identifier.urihttps://doi.org/10.2136/sssaj2006.0302
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77720
dc.identifier.wosidWOS:000249174300014
dc.information.autorucAgronomía e Ing. Forestal;Bonilla C;S/I;80465
dc.issue.numero5
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final1537
dc.pagina.inicio1524
dc.publisherSOIL SCI SOC AMER
dc.revistaSOIL SCIENCE SOCIETY OF AMERICA JOURNAL
dc.rightsregistro bibliográfico
dc.subjectSEDIMENT TRANSPORT CAPACITY
dc.subjectCARBON BALANCE
dc.subjectSOIL
dc.subjectRUNOFF
dc.subjectGIS
dc.subjectPERFORMANCE
dc.subjectEUROSEM
dc.subjectSYSTEM
dc.subjectAGNPS
dc.subjectWEPP
dc.subject.ods15 Life on Land
dc.subject.ods02 Zero Hunger
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa02 Hambre cero
dc.titleWater erosion estimation in topographically complex landscapes: Model description and first verifications
dc.typeartículo
dc.volumen71
sipa.codpersvinculados80465
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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