Evaluation of mensuration equipment for upper-stem height and diameter measurements.

  • Fergus McCaffery Forestry Consultant, Sligo.
  • Michael Hawkins Roodubo Limited, Dublin.
  • Mark Tarleton Purser Tarleton Russell Limited, Dublin.
  • Charles Harper UCD Forestry, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4.
  • Maarten Nieuwenhuis UCD Forestry, UCD School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4.
Keywords: Impulse Laser, TruPulse, LaserAce, Masser, Haglöf.

Abstract

To assess standing timber volume and value, inventory and analysis methods are needed that can capture the precise stem form of individual trees. Most taper or tree form models perform much better if upper-stem diameter measurements are available, in addition to DBH and height values. This paper reports on the testing of hand-held tools for upper stem diameter and height measurements. The evaluation of the equipment was based on the accuracy of diameter and height measurements, the time required to carry out these measurements and the cost of the equipment. The test involved familiarisation with the equipment, followed by diameter and height measurements on four Norway spruce trees at 1⁄3 and 3⁄5 of total tree height. Both experienced and inexperienced professional foresters were included in the study.
Published
2015-11-01
How to Cite
McCaffery, F., Hawkins, M., Tarleton, M., Harper, C., & Nieuwenhuis, M. (2015). Evaluation of mensuration equipment for upper-stem height and diameter measurements. Irish Forestry. Retrieved from https://journal.societyofirishforesters.ie/index.php/forestry/article/view/10292
Section
Articles