ANALYSIS OF THE ANNUAL RING STRUCTURE AND WOOD DENSITY RELATIONS IN ENGLISH OAK AND SESSILE OAK

摘要

The analysis of wood density variability of English oak (Quercus robur L.) and Sessile oak (Quercus petraea (Matt.) Liebl.) was carried out. English oaks were taken from testing area in floodplain forest of South Moravia (Czech Republic) and Sessile oaks were from highland. Sample logs were taken at height 1.3 m from the ground (log length 1 m) from 10 tree stems, i.e. 5 from each testing area. Both intra-species and inter-species variabilities along the stem radius were analysed. Also relation between wood density, annual ring width and portion of late wood were studied. The average oven-dry wood density of English oak and Sessile oak was 584.3 kg.m(-3) and 672.7 kg.m(-3) respectively.