Forest Measurement and Modelling.
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Tools for measuring stand basal area Forest Measurement and Modelling. |
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The instruments described here are used in the angle-count sampling method. Although theoretically accurate, the method must be carefully implemented to avoid error.
The Code of Forest Mensuration Practice (section 3.3.2 and 3.3.3
at http://www.anu.edu.au/Forestry/mensuration/rwg2/code/3-3-2.htm
and http://www.anu.edu.au/Forestry/mensuration/rwg2/code/3-3-3.htm)
provides an excellent review of good measurement practice. | ||
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Spiegel Relaskop (Relascope): Commonly referred to as a Relaskop. A sophisticated, compact and robust device for measuring range, tree height and diameter, and stand parameters. It is relatively expensive. BAF from 0.0625 to 4.0 can be selected. However, there are a number of scales visible and novice users are often confused by the apparent reading complexity. |
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The bottle-opener dendrometer: A very cheap instrument for estimating height and stand basal area. BAF of 1,2 or 4 can be selected. |
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[toolsg.htm] Revision: 6/1999 | |