Canadian Forest Service Publications

An electromechanical dendrometer band. 1978. Hall, T.H.; Layton, C.R.; Oxtoby, L.D. Fisheries and Environment Canada, Canadian Forest Service, Pacific Forest Research Centre, Victoria, BC. Information Report BC-X-184. 8 p.

Year: 1978

Issued by: Pacific Forestry Centre

Catalog ID: 2007

Language: English

Series: Information Report (PFC - Victoria)

Availability: PDF (download)

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Abstract

An electromechanical dendrometer band, designed for use in tree physiology studies (Brix, 1978; Crown and Brett et al., 1975), is described and evaluated. The dendrometer meets its design objectives of precision (around 0.2 mm diameter increment), easy installation, ground level reading and low unit cost ($5 - $10). Laboratory tests estimated instrument precision to be ± 0.25 mm (95% confidence interval) and ± 0.16 mm (80% confidence interval). Field tests indicated that band accuracy may be influenced by an initial period of underestimation, owing to initial slack upon installation and by an uneven recording of true increment, because of a tendency of bands to stick.