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Table 7 Correlations between predicted and field-measured biomass at stem level using simple regression methods

From: Non-destructive estimation of field maize biomass using terrestrial lidar: an evaluation from plot level to individual leaf level

Variable

Simple linear regression

Log transformed simple regression

R2

RMSE, g

R2

RMSE, g

Stem diameter

0.76**

13.99

0.80**

12.93

Stem height

0.93**

8.14

0.94**

7.46

Volume

0.90**

8.89

0.91**

8.63

PAI

0.51**

19.62

0.45**

21.38

3DPI

0.48**

20.19

0.69**

19.64

  1. Italic values indicate the most important variable and the corresponding prediction accuracy (i.e., R2 and RMSE) of simple regression models (i.e., SLR and LSR)
  2. * p < 0.05; ** p < 0.01