Fig. 6From: Non-destructive estimation of field maize biomass using terrestrial lidar: an evaluation from plot level to individual leaf levelVariable importance analysis for a the SMR model, b the ANN model, and c the RF model at individual plant level. Note that PAI, PLA, 3DPI, and CHR represent the plant area index, projected leaf area, three-dimensional profile index, and ratio of crown size to height, respectivelyBack to article page