An integrated approach to individual tree volume distribution and stem profile modeling.

Individual tree merchantable volume-total volume ratios with respect to stem diameters and heights on the tree stem were described with the S_B distribution. Different volume ratio estimates were obtained for a given location on the tree stem depending on whether the location is indexed by a diameter or height. The merchantable volume-total volume ratios with respect to joint stem diameters and heights were therefore described with the S_BB bivariate distribution. A stem tape model was obtained from the conditional distribution of diameter given height using the median regression.-from Authors