Root architecture and wind-firmness of mature Pinus pinaster
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.
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Cite 10.15454/K9DQPA Jeu de données Danjon, Frédéric; Saint Cast, Clément; Meredieu, Céline; Bert, Didier; Danquechin Dorval, Antoine; Issenhuth, Bernard; Lagane, Frédéric; Ségura, Raphaël, 2020, "Descriptive variables of 11,004 roots from 69 Pinus pinaster root systems excavated and digitized in 3D", https://doi.org/10.15454/K9DQPA, Recherche Data Gouv, V1, UNF:6:FL0LCMy3RvT1EXOu6emvZg== [fileUNF]