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Fig. 3. Coefficient of determination (r2) versus numerator wavelength (
) for relationships of leaf total chlorophyll (a + b) concentration with leaf reflectance (R), transmittance (T), and absorptance (A) band ratios. Regressions were based on linear or quadratic models as indicated atop the figure and data combined among the four planar-leaved species (168 samples). Ratios were computed by dividing R, T, or A at each by R or T at 850 nm, or A at 400 nm based on results in Fig. 2.
