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Table 8 Summary of RMSE and MD calculated using NFI field plots within individual ALS projects. Predictions from a CV, using the species-specific models and predicted species as described in section “Stratification according to main tree species”. The 115 ALS projects with 30 or more NFI field plots were included

From: Large scale mapping of forest attributes using heterogeneous sets of airborne laser scanning and National Forest Inventory data

 

RMSE

MD

mean (min – max)

mean (min – max)

Volume

m3∙ha−1

39.4 (10.0–81.1)

0 (−8.8–16.2)

%a

31.9% (17.3% – 59.0%)

0 (−7.8% – 15.9%)

Lorey’s height

m

1.4 (1.0–2.2)

0 (−0.4–0.5)

%a

9.8% (5.8% – 17.6%)

0.2% (−2.7% – 3.7%)

Basal area

m2∙ha−1

5.1 (1.6–9.0)

0 (− 1.3–3.6)

%a

28.8% (16.5% – 46.6%)

−0.1% (− 7.6% – 24.3%)

Biomass

Mg∙ha−1

25.1 (6.2–52.5)

0 (−5.8–11.8)

%a

31.5% (17.9% – 54.2%)

− 0.1% (− 7.0% – 19.0%)

  1. a RMSE% and MD% were calculated using the mean field measured values for each ALS project