Form function for the 'I-214' poplar merchantable stem (Populus x euramericana (Dode) Guinier cv cultivar 'I-214')

This paper describes a research and application integrated procedure: the d evelopment, evaluation, and use of a form function for the 'I-214' poplar m erchantable stem. Because this form function is to be used by timber mercha nts, a particular emphasis is placed on its sturdiness and reliability. The model is extrapolated to other poplar clones in order to measure the error when using it beyond the range of validity. The limits of the model and po ssibilities for its improvement are discussed. Its applications are present ed.