Canadian Forest Service Publications

A data bank system for forest tree disease and growth plots in British Columbia. 1976. Bloomberg, W.J.; Hunt, D.; Wallis, G.W. Government of Canada. Department of the Environment. Canadian Forest Service, Pacific Forest Research Centre, Victoria, BC. Information Report BC-X-143. 26 p.

Year: 1976

Issued by: Pacific Forestry Centre

Catalog ID: 1739

Language: English

Series: Information Report (PFC - Victoria)

Availability: Order paper copy (free), PDF (download)

Mark record


Growth and disease measurement data over periods up to 47 years and coordinates for 22,000 trees in seven natural stands and three plantations on eastern Vancouver Island are stored on magnetic tape. A system has been developed for rapid data retrieval by using standard formatting, sequential ordering and cross-indexing of data files. A data analysis program allows choice of compilation and statistical analysis procedures to be applied to selected data subsets, including calculation of total, mean, mode, median, range, frequency distribution, and tests of conformity to normal, random or patchy distribution. Stem maps are also produced. Data subsets can consist of any logical combination of up to 37 tree growth or disease parameters. The analysis program is in modular form, allowing the addition of compilation or statistical options. Procedures for using the system are described.