2.3.2 Temporal stability of AGB and productivity
We calculated productivity (Mg ha-1year-1) and AGB temporal stability per period for each plot. Productivity represents the change in AGB over time.
Temporal stability = μ / SD,
μ: Mean AGB from the initial time to the final survey time for each plot.
SD: standard deviation of AGB from the initial time to the final survey time for each plot.
Plot-level AGB (Tg ha-1) was calculated by summing up the biomass of all live trees >5 cm in DBH in each plot at each measurement. AGB of each live tree was assessed using the “scaling-up factor continuous function” method (Fang et al., 2001) and did not include litterfall production. This method is considered accurate for estimating forest biomass at regional scales.