Author : Del Rosario, Conrado P.

Summary : Six basal area factors or point sampling specifications and five levels/magnitudes of L or 3Pee sampling specifications were investigated in independent comparisons with the standard 100% inventory procedure under three types of forest plantation stands classified on the basis of the stand DBH class size in centimeters. Most efficient sampling specifications for these two techniques were then compared with some conventional forest sampling methods and their respective sampling specifications, the strip and the line fixed-area plot methods. Analyses for comparative efficiencies of the different sampling methods and specifications were made based on accuracy, precision, and cost of field measurements. The criterion suggested by Grosenbaugh and Mesavage (1956) was also used as an additional measure of efficiency.