Figure 3
From: Fine root lignin content is well predictable with near-infrared spectroscopy
Predicted versus observed lignin contents (mean over 100 runs) from model calibration (left) and model validation (right) given as linear regression (dashed line) against the 1:1 line (solid line). Symbols represent the gradient of species richness (squares = 1, circles = 2, triangle = 4, rhombus = 8, triangle (upside down) = 16). n indicates the number of samples used in calibration and validation.
