PT Journal AU Liu, S Loup, C Gril, J Dumonceaud, O Thibaut, A Thibaut, B TI Studies on European beech (Fagus sylvatica L.). Part 1: Variations of wood colour parameters SO Annals of Forest Science JI Ann. For. Sci. PY 2005 BP 625 EP 632 VL 62 IS 7 DE Fagus sylvatica L.; CIELab colour system; solid wood; red heartwood AB Colour parameters of European beech were measured using CIELab system. 103 logs from 87 trees in 9 sites were cut into boards to study the radial variations of wood colour parameters. Both site and tree effects on colour were observed. Patterns of red heartwood occurrence were defined. When excepting red heartwood there was still a highly significant effect of site and tree. Axial and radial variations were small, except very near the pith or in red heartwood, suggesting possible early selection at periphery under colour criteria. Red heartwood is darker, redder and more yellow than normal peripheral wood. ER