GYPSY Volume Function Prediction Bias Clause Samples

GYPSY Volume Function Prediction Bias. Due to lack of data, Canfor cannot quantify the amount of volume prediction bias that may be present in regenerating stands. Early observations suggest that if the volume function prediction bias is present, it is tree form (tree taper) related. Managed stand tree taper, especially in pine stands will be very different from those of natural stands due to wider spacing and early density management. Therefore the adjustment process for the apparent over-prediction in the GYPSY 2009 volume functions in natural stands was not applied.35 Over time Canfor will be able to validate this assumption and assess the amount of bias in managed stands, if any, in gross merchantable volume as predicted by the GYPSY model.