Fig. 5From: Infrared spectra of soil organic matter under a primary vegetation sequenceDRIFT spectra of humus extracts from profile II. H-NaOH = alkaline extract from a sample of the H horizon: B-NaOH = alkaline extract from a sample of the B horizon. Vertical scale in Kubelka–Munk units. Spectra normalized to equal vertical scaleBack to article page