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Article Dans Une Revue New Phytologist Année : 2005

Root architecture and wind-firmness of mature Pinus pinaster

Frédéric Danjon
Didier Bert

Résumé

This study aims to link three-dimensional coarse root architecture to tree stability in mature timber trees with an average of 1-m rooting depth. • Undamaged and uprooted trees were sampled in a stand damaged by a storm. Root architecture was measured by three-dimensional (3-D) digitizing. The distribution of root volume by root type and in wind-oriented sectors was analysed. • Mature Pinus pinaster root systems were organized in a rigid 'cage' composed of a taproot, the zone of rapid taper of horizontal surface roots and numerous sinkers and deep roots, imprisoning a large mass of soil and guyed by long horizontal surface roots. Key compartments for stability exhibited strong selective leeward or windward reinforcement. Uprooted trees showed a lower cage volume, a larger proportion of oblique and intermediate depth horizontal roots and less wind-oriented root reinforcement. • Pinus pinaster stability on moderately deep soils is optimized through a typical rooting pattern and a considerable structural adaptation to the prevailing wind and soil profile.

Dates et versions

hal-00016510 , version 1 (05-01-2006)

Identifiants

Citer

Frédéric Danjon, Thierry Fourcaud, Didier Bert. Root architecture and wind-firmness of mature Pinus pinaster. New Phytologist, 2005, 168 (2), pp.387-400. ⟨10.1111/j.1469-8137.2005.01497.x⟩. ⟨hal-00016510⟩
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