Fig. 8From: Environmental factors and wood qualities of African blackwood, Dalbergia melanoxylon, in Tanzanian Miombo natural forestRelationship between DBH and stress-wave velocity (Vs) of ABW. Each correlation coefficient of the site was, respectively, showed as follows; Kikole: r = − 0.1749; Nainokwe: r = − 0.0999; Nanjirinji: r = 0.1134)Back to article page