Fig. 6From: Extending harmonized national forest inventory herb layer vegetation cover observations to derive comprehensive biomass estimatesObserved and predicted total herb layer above-ground biomass on subplots open circles; N = 27) and reference plots (diamonds; N = 9) (dry matter, g·m− 2) on 3 revisited study sites below 600 m in 3 cluster regions with 3 independent subplots at each site and visit. Observed data from visit #1 were already used in model development, data from visits #2 and #3 are considered independent observationsBack to article page