A series of programmes has been developed for an I.B.M. 1401 computor to process the basic field plot measurements for forest research and management, by calculating mean diameters and heights of trees, and values per acre such as basal areas, volumes and numbers of trees by utilization classes. These values can be for the whole plot or for sub-groups within the plot such as species, diameter classes or silvicultural groups. Comparisons between successive measurements give information on increments.
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