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The impact of landscape fragmentation on atmospheric flow: a wind-tunnel study

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorPOETTE, Christopher
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorGARDINER, Barry
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDUPONT, Sylvain
hal.structure.identifierOceans and Atmosphere
dc.contributor.authorHARMAN, Ian
hal.structure.identifierOceans and Atmosphere
hal.structure.identifierResearch School of Biology
dc.contributor.authorBÖHM, Margi
hal.structure.identifierOceans and Atmosphere
dc.contributor.authorFINNIGAN, John
hal.structure.identifierOceans and Atmosphere
dc.contributor.authorHUGHES, Dale
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBRUNET, Yves
dc.date.accessioned2024-04-08T12:09:47Z
dc.date.available2024-04-08T12:09:47Z
dc.date.issued2017
dc.identifier.issn0006-8314
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196591
dc.description.abstractEnLandscape discontinuities such as forest edges play an important role in determining the characteristics of the atmospheric flow by generating increased turbulence and triggering the formation of coherent tree-scale structures. In a fragmented landscape, consisting of surfaces of different heights and roughness, the multiplicity of edges may lead to complex patterns of flow and turbulence that are potentially difficult to predict. Here, we investigate the effects of different levels of forest fragmentation on the airflow. Five gap spacings (of length approximately 5h, 10h, 15h, 20h, 30h, where h is the canopy height) between forest blocks of length 8.7h, as well as a reference case consisting of a continuous forest after a single edge, were investigated in a wind tunnel. The results reveal a consistent pattern downstream from the first edge of each simulated case, with the streamwise velocity component at tree top increasing and turbulent kinetic energy decreasing as gap size increases, but with overshoots in shear stress and turbulent kinetic energy observed at the forest edges. As the gap spacing increases, the flow appears to change monotonically from a flow over a single edge to a flow over isolated forest blocks. The apparent roughness of the different fragmented configurations also decreases with increasing gap size. No overall enhancement of turbulence is observed at any particular level of fragmentation.
dc.language.isoen
dc.publisherSpringer Verlag
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.subjectflux atmosphérique
dc.subjectturbulence atmosphérique
dc.subjectfragmentation du paysage
dc.subject.enboundary layer
dc.subject.enedge flow
dc.subject.enfragmented landscape
dc.subject.enturbulent flow
dc.subject.enwind tunnel
dc.subject.enatmospheric turbulence
dc.title.enThe impact of landscape fragmentation on atmospheric flow: a wind-tunnel study
dc.typeArticle de revue
dc.identifier.doi10.1007/s10546-017-0238-1
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalBoundary-Layer Meteorology
bordeaux.page393-421
bordeaux.volume163
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue3
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01605187
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01605187v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Boundary-Layer%20Meteorology&rft.date=2017&rft.volume=163&rft.issue=3&rft.spage=393-421&rft.epage=393-421&rft.eissn=0006-8314&rft.issn=0006-8314&rft.au=POETTE,%20Christopher&GARDINER,%20Barry&DUPONT,%20Sylvain&HARMAN,%20Ian&B%C3%96HM,%20Margi&rft.genre=article


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