Figure 2
From: High-fidelity national carbon mapping for resource management and REDD+
Linking airborne LiDAR to field-based estimates of aboveground carbon stocks. (a) Calibration of LiDAR top-of-canopy (TCH) height to field-plot estimates of aboveground carbon density [ACD = 0.359TCH1.7676]. (b) Separate validation plots in four ecoregions were compared against the calibration model, which is the black line in both panels. For the validation plots, RMSE (predicted versus observed) represents an estimate of LiDAR-calibration uncertainty, given that the field plots are not randomly distributed across the study area.