Herman, Francis R.; DeMars, Donald J.; Woollard, Robert F. 1975. Field and computer techniques for stem analysis of coniferous forest trees. Res. Pap. PNW-194. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 51 p.
Field and computer techniques for stem analysis adaptable to both young- andold-growth conifers are presented. Field instructions include a step-by-stepexplanation of tree cutting, sectioning, ring count, and measurement techniques. Acomputer program adapted to field techniques reproportions a tree's radial measure-ment data, calculates height-age-site index information, punches the reproportionedand height-age-site index information on cards, and plots height-age and stem profilegraphs. These stem analysis techniques are adaptable to trees of any size up to800 years old and to either American or metric measures. These instructionsenhance the usefulness of the stem analysis research method in obtaining growthinformation for forest managers.
KEYWORDS: Stem analysis, age determination, ring measurement, data recordingmethods, old-growth conifers.