Reconstructing crown shape from stem diameter and tree position to supply light models. I. Algorithms and comparison of light simulations Export

@article{Pibou05, abstract = {Light models provide an interesting way to analyse the influence of the forest canopy on understory biological processes but need a detailed description of tree crowns, requiring many field measurements. This study proposes supplying light models with only stem diameter and tree position and reconstructing crowns using diameter-related allometric relations. First, the diameter-related relations for total height, crown base height and mean crown radius were established for each species. Second, two reconstruction methods were compared: a simple isotropic method and a more sophisticated method, the Crown Reconstruction by Overlap Minimisation method. The latter method gave better results than the simpler one, even if some small bias was not completely resolved in the darkest areas. However, using crown centre position instead of stem position resolved this bias.}, author = {Piboule, A. and Collet, C. and Frochot, H. and Dh\^{o}te, J. F.}, citeulike-article-id = {2051607}, journal = {Annals of Forest Science}, keywords = {crown, forest, light, modelling, reconstruction}, pages = {645--657}, posted-at = {2007-12-03 18:03:26}, priority = {0}, title = {Reconstructing crown shape from stem diameter and tree position to supply light models. I. Algorithms and comparison of light simulations}, volume = {62}, year = {2005} }

TY - JOUR ID - Pibou05 L3 - citeulike-article-id:2051607 N2 - Light models provide an interesting way to analyse the influence of the forest canopy on understory biological processes but need a detailed description of tree crowns, requiring many field measurements. This study proposes supplying light models with only stem diameter and tree position and reconstructing crowns using diameter-related allometric relations. First, the diameter-related relations for total height, crown base height and mean crown radius were established for each species. Second, two reconstruction methods were compared: a simple isotropic method and a more sophisticated method, the Crown Reconstruction by Overlap Minimisation method. The latter method gave better results than the simpler one, even if some small bias was not completely resolved in the darkest areas. However, using crown centre position instead of stem position resolved this bias. JF - Annals of Forest Science EP - 657 TI - Reconstructing crown shape from stem diameter and tree position to supply light models. I. Algorithms and comparison of light simulations VL - 62 SP - 645 KW - crown KW - forest KW - light KW - modelling KW - reconstruction AU - Piboule, A AU - Collet, C AU - Frochot, H AU - Dhôte, JF PY - 2005/// ER -