Interactions between light and plant architecture in an agroforestry walnut tree
Dynamic simulation of agroforestry systems requires models of light-vegetation interactions in the tree crown, because of their consequences on tree architecture. We analysed light relations in the crown of a 20-year-old walnut tree grown in an agroforestry system, including the effect of foliage display on light gradients and the tree response to light microclimate. Firstly, the three-dimensional (3D) architecture of the tree was measured using a 3D digitising device. Secondly, a light transfer model was used to simulate leaf irradiance distribution within the crown at a shoot scale. Finally, a preliminary study of the determinants of shoot vigour variability was performed from correlation analysis between shoot diameter and shoot location parameters.
| Main Authors: | , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | F50 - Anatomie et morphologie des plantes, U10 - Informatique, mathématiques et statistiques, Juglans regia, anatomie végétale, port de la plante, insolation, lumière du jour, modèle de simulation, bilan radiatif, feuille, http://aims.fao.org/aos/agrovoc/c_4060, http://aims.fao.org/aos/agrovoc/c_5954, http://aims.fao.org/aos/agrovoc/c_5969, http://aims.fao.org/aos/agrovoc/c_3892, http://aims.fao.org/aos/agrovoc/c_2135, http://aims.fao.org/aos/agrovoc/c_24242, http://aims.fao.org/aos/agrovoc/c_6420, http://aims.fao.org/aos/agrovoc/c_4243, http://aims.fao.org/aos/agrovoc/c_3081, |
| Online Access: | http://agritrop.cirad.fr/480042/ |
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