Analyses of Forest Foliage III: Determining Nitrogen,Lignin and Cellulose in Fresh Leaves Using near Infrared Reflectance Data

Abstract

Near infrared laboratory data of whole fresh leaves were evaluated with respect to leaf chemical composition. Near infrared spectra were measured for 211 foliage samples including both broad- and needle-leaved species. A multiple linear regression analysis was used to determine if reflectance data from fresh leaf samples contains information on nitrogen, lignin and cellulose concentrations. Calibration equations were developed for all three leaf constituents, indicating that information on leaf biochemistry is present in the spectra of fresh as well as dried, ground leaf samples.

Keywords

Leaf chemistry near infrared spectroscopy nitrogen lignin cellulose

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