Abstract:

A normal wood and a tension wood (lean angle of the stem was 10°) were drawn from natural stands of Langya mountains, Anhui province, whose wood properties were analyzed and compared. At a result, three portions in tension wood were divided, which were tension wood (T), far away from the pith, opposite wood (O), near the pith, and flank side wood (S), between T and O. Compared with the properties of S and O, more quantities of glutinous fiber, higher fiber tissue propotion, lower compressive strength parallel to the grain, larger shrinkage coefficent and higher basic density were found.Apart from fiber tissue propotion, the other properties of normal wood were better than that of three portions in tension wood. The properties of normal wood were partly samilar to that of S, but the difference between them were still very large.

Key words: Kalopanax septemlobus, Tension wood, Normal wood, Wood properties comparasion