Computer Programs to Calculate Basal Area Increment from Tree Rings

摘要

Two major programs, AREA and PLOT, and two minor programs, MAKERAD and TRING, intended for use on personal computers, are described. AREA performs preliminary data processing of ring-width data and calculates standardized ring widths and areas with and without the variance attributable to climate. PLOT provides a means of examining results from AREA graphically. MAKERAD calculates radius length into a format acceptable by AREA. Examples are given of input to, and output from, program AREA.