Fig. 3From: Infrared spectra of soil organic matter under a primary vegetation sequenceDRIFT spectra of soil samples from the H and B horizons of profile I. H-Total = whole soil sample; H-Humin = soil residue after alkaline extraction; B-Humin = soil residue after alkaline extraction. Vertical scale in Kubelka–Munk units. Spectra normalized to equal vertical scaleBack to article page