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hal.structure.identifierBotanique et Modélisation de l'Architecture des Plantes et des Végétations [UMR AMAP]
dc.contributor.authorFOURCAUD, Thierry
hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
dc.contributor.authorDANJON, Frederic
hal.structure.identifierUnité des Sciences du bois et des biopolymères [Us2b]
dc.contributor.authorDUPUY, Lionel
dc.date.issued2003
dc.date.conference2003-09-16
dc.description.abstractEnThe mechanical structure of 24 root systems was studied in 50 year old Maritime pine (Pinus pinaster Ait) trees after the 1999 storm, which resulted in the loss of >4 million hectares of forest in southwest France. Half of the study trees had been uprooted during the storm and the other study trees were left standing. Topology and geometry of the root systems were measured using a 3D digitising device. The spatial distribution of roots was then analysed. The 3D representation of each root system was used to calculate the mechanical behaviour of the structure in different compass directions, using a finite element model. Results show that resistance to windthrow can be provided by four different structural adaptations of root systems, and that root architecture may explain half of the sensitivity to uprooting. There was no significant difference in uprooting resistance between trees that were damaged by the storm, and those which remained upright. However, all root systems were found to be highly asymmetric with regard to morphology. This asymmetry influenced strongly the mechanical behaviour of anchorage, depending on the direction of loading.
dc.language.isoen
dc.publisherUniversity of Karlsruhe
dc.source.titleWind effects in trees: proceedings of the international conference, Karlsruhe University, 16th-18th September 2003
dc.subject.enPinus Pinaster
dc.subject.enRoot anchorage
dc.subject.enRoot system
dc.subject.enBiomechanics
dc.subject.enNumerical analysis
dc.subject.enAclimation
dc.title.enNumerical analysis of the anchorage of maritime pine trees in connection with root structure
dc.typeCommunication dans un congrès
dc.subject.halSciences de l'environnement
bordeaux.page323-330
bordeaux.conference.titleWind effects in trees: proceedings of the international conference, Karlsruhe University, 16th-18th September 2003
bordeaux.countryDE
bordeaux.title.proceedingWind effects in trees: proceedings of the international conference, Karlsruhe University, 16th-18th September 2003
bordeaux.conference.cityKarlsruhe
bordeaux.peerReviewedoui
hal.identifierhal-01244043
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2003-09-18
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01244043v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Wind%20effects%20in%20trees:%20proceedings%20of%20the%20international%20conference,%20Karlsruhe%20University,%2016th-18th%20September%202003&rft.date=2003&rft.spage=323-330&rft.epage=323-330&rft.au=FOURCAUD,%20Thierry&DANJON,%20Frederic&DUPUY,%20Lionel&rft.genre=unknown


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