An assessment of the point-centred quarter method of plotless sampling in some New Zealand forests
- Botany Department, University of Otago, Dunedin
- Botany Division, D.S.I.R., Auckland
The point-centred quarter method of plotless sampling produces exaggerated values for mean basal area when used in most New Zealand forest types. The error appears to be related to the rather wide range of size classes present in most forest stands and probably arises from the tendency for large, trees to be over-represented in samples.