Effects of moisture content and chemical composition on the near infrared spectra of forest foliage

Mary E. Martin; John D. Aber

doi:10.1117/12.21348

1 September 1990 Effects of moisture content and chemical composition on the near infrared spectra of forest foliage

Mary E. Martin, John D. Aber

Proceedings Volume 1298, Imaging Spectroscopy of the Terrestrial Environment; (1990) https://doi.org/10.1117/12.21348
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Near infrared reflectance spectra were used to estimate nitrogen lignin and cellulose concentrations in fresh foliage samples. The spectra of sixty samples from 8 species (4 deciduous 4 conifer) were measured from llOO-2500nxn when the samples were both fresh and dried. Existing regression equations relating near infrared reflectance to sample composition were used to measure concentrations in the dry ground samples. Multiple linear regressions were then used to derive equations relating spectral measurements of the fresh samples to constituent concentration. Results suggest that these constituents can be measured in fresh foliage samples using high resolution near infrared reflectance spectroscopy. 1.

Citation Download Citation

Mary E. Martin and John D. Aber "Effects of moisture content and chemical composition on the near infrared spectra of forest foliage", Proc. SPIE 1298, Imaging Spectroscopy of the Terrestrial Environment, (1 September 1990); https://doi.org/10.1117/12.21348

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