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Architecture of silver maple and its response to pruning near the power distribution network

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The architectural analysis of silver maple (Acer saccharinum L.) in natural environments has revealed the sympodial nature of its growth, the three levels of organization that govern the development of its stems through an alternation of organization plans (hierarchic and polyarchic), as well as the characteristic traits of the three architectural units involved and of the four categories of differentiated axes. The growth responses of silver maple alongside streets were analyzed in four pruning contexts associated with tree position relative to the wires of the power distribution network. Data reveal that with increasing pruning pressure, the percentage of the crown composed of suckers becomes higher, as does their growth rate, indicating a greater disorganization of the structure of the crown. Silver maple is naturally capable of developing a low fork with limbs that have hierarchic development. However, the pruning has promoted the reverse, which is the appearance of a high fork and, after repeated prunings, a more polyarchic development of the crown, increasing the threat that trees represent for wires.

L'analyse architecturale de l'érable argenté (Acer saccharinum L.) en milieu naturel a révélé la nature sympodiale de sa croissance, les trois niveaux d'organisation qui gèrent le développement de ses tiges dans une alternance de plans d'organisation (hiérarchique et polyarchique) de même que les traits caractéristiques des trois unités architecturales impliquées et des quatre catégories d'axes différenciés. Les réactions de croissance de l'érable argenté en bordure des rues ont été analysées dans quatre contextes d'élagage associés à la position de l'arbre par rapport aux fils du réseau de distribution. Les données révèlent que plus la pression de taille augmente, plus le pourcentage de la cime sous forme de rejets et plus leur taux de croissance sont grands, ce qui témoigne d'une plus grande désorganisation de la structure de la cime. L'érable argenté est naturellement apte à mettre en place une fourche basse avec des branches maîtresses au développement hiérarchisé. Toutefois, les tailles de dégagement ont encouragé l'inverse, soit l'apparition d'une fourche haute et, après insistance des tailles, un développement plus polyarchique de la cime, augmentant ainsi la menace que font les arbres aux fils.

Document Type: Research Article

Publication date: April 1, 2003

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  • Published since 1971, this monthly journal features articles, reviews, notes and commentaries on all aspects of forest science, including biometrics and mensuration, conservation, disturbance, ecology, economics, entomology, fire, genetics, management, operations, pathology, physiology, policy, remote sensing, social science, soil, silviculture, wildlife and wood science, contributed by internationally respected scientists. It also publishes special issues dedicated to a topic of current interest.
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