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hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDUPONT, Samuel
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorBERGAMETTI, G.
hal.structure.identifierLaboratoire de Mecanique des Fluides et d'Acoustique [LMFA]
dc.contributor.authorSIMOËNS, Serge
dc.date.accessioned2024-04-08T12:12:05Z
dc.date.available2024-04-08T12:12:05Z
dc.date.issued2014-03-17
dc.identifier.issn2169-9003
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196732
dc.description.abstractEnSemiarid landscapes are characterized by vegetated surfaces. Understanding the impact of vegetation on aeolian soil erosion is important for reducing soil erosion or limiting crop damage through abrasion or burial. In the present study, a saltation model fully coupled with a large-eddy simulation airflow model is extended to vegetated landscapes. From this model, the sensitivity of sand erosion to different arrangements and type of plants (shrub versus tree) representative of semiarid landscapes is investigated and the wind erosion reduction induced by plants is quantified. We show that saltation processes over vegetated surfaces have a limited impact on the mean wind statistics, the momentum extracted from the flow by saltating particles being negligible compared to that extracted by plants. Simulated sand erosion patterns resulting from plant distribution, i.e., accumulation and erosion areas, appear qualitatively consistent with previous observations. It is shown that sand erosion reduction depends not only on vegetation cover but also on plant morphology and plant distribution relative to the mean wind direction. A simple shear stress partitioning approach applied in shrub cases gives similar trends of sand erosion reduction as the present model following wind direction and vegetation cover. However, the magnitude of the reduction appears significantly different from one approach to another. Although shrubs trap saltating particles, trees appear more efficient than shrubs to reduce sand erosion. This is explained by the large-scale sheltering effect of trees compared to the local shrub one.
dc.language.isoen
dc.publisherAmerican Geophysical Union/Wiley
dc.subject.ensaltation; vegetation; large-eddy simulation; erosion
dc.title.enModeling aeolian erosion in presence of vegetation
dc.typeArticle de revue
dc.identifier.doi10.1002/2013JF002875
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
bordeaux.journalJournal of Geophysical Research: Earth Surface
bordeaux.page168-187
bordeaux.volume119
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01296881
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01296881v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Geophysical%20Research:%20Earth%20Surface&rft.date=2014-03-17&rft.volume=119&rft.issue=2&rft.spage=168-187&rft.epage=168-187&rft.eissn=2169-9003&rft.issn=2169-9003&rft.au=DUPONT,%20Samuel&BERGAMETTI,%20G.&SIMO%C3%8BNS,%20Serge&rft.genre=article


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