Assessing Forest Production Using Terrestrial Monitoring Data

Table 3

Comparison of fixed-area and angle-count estimates of stand increment per 5 years, for the 72 000 data points simulated in each measurement year.

Method	Increment estimate, m³/ha/5 years
	Mean	Std. dev.
Fixed-area plots	67.88	28.14
Angle counts, difference method	69.01	56.97
Angle counts, starting Value method	68.23	21.89
Angle counts, end Value method	68.24	21.13