JAS log volumes estimates of New Zealand radiata pine and Douglas-fir logs

Authors: J.C. Ellis, D.H. Sanders, D. Pont
Publication: New Zealand Journal of Forestry, Volume N.Z.J.For. 1996, Issue N.Z.J.For. 41(1) 1996, pp 32-36, May 1996
Publisher: New Zealand Institute of Forestry

Abstract: Sectionally measured radiata pine and Douglas-fir sawlog data has been analysed to study the relationship between true volume and that derived using the Japanese Agricultural Standard (JAS). Although JAS volume estimates on logs of average dimensions are close to true cubic, large errors are introduced with increase in log taper and decrease in small-end diameter