Estimating the volume of Australian hardwoods using centroid sampling [Flindersia brayleyana; Eucalypus species]
1990
Wood, G.B. (Australian National Univ., Canberra. Dept. of Forestry) | Wiant Jr, H.V. (West Virginia Univ., Morgantown (USA). Dept. of Forestry)
Centroid sampling was tested on 18 sample trees of Flindersia brayleyana and 124 samples of 5 species of Eucalyptus, all of which were measured in detail. The mean error of the centroid estimate of volume of the main bole was not significant for E. sieberi and E. diversicolor and was less than that derived from Huber's formula for all species except E. regnans. When all species were combined the centroid estimate was more clearly accurate, its mean error being just significant. Centroid sampling appears applicable to tree species of both excurrent and deliquescent growth habit.
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