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

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

Variable	Simple linear regression		Log transformed simple regression
Variable	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

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)
* p < 0.05; ** p < 0.01

ISSN: 1746-4811