Effects of shoot-level structure on narrowband vegetation indices for Scots pine

Matti Mõttus, Miina Rautiainen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

We measured simultaneously the spectral albedo of ten Scots pine shoots, and the needles constituting the shoots, in Zurich, Switzerland. Next, we used the spectral information to calculate the photochemical reflectance index (PRI) which allows to retrieve photosynthetic productivity from imaging spectroscopy data. Using p-theory, we showed that PRI values can be scaled between needle and shoot levels using photon recollision probability and the harmonic mean of needle spectral albedo at the wavelengths used in the index. As a comparison, we used narrowband NDVI and demonstrated that despite mathematical similarity, the two indices scale differently. Contrary to NDVI, the needle-level information contained in PRI scaled well to the level of the shoot.

Original languageEnglish
Title of host publication2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012
DOIs
Publication statusPublished - 1 Jan 2012
MoE publication typeA4 Article in a conference publication
Event2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012 - Shanghai, China
Duration: 4 Jun 20127 Jun 2012

Conference

Conference2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012
CountryChina
CityShanghai
Period4/06/127/06/12

Fingerprint

Needles
Photons
Productivity
Spectroscopy
Imaging techniques
Wavelength

Keywords

  • Photochemical Reflectance Index (PRI)
  • photon recollision probability
  • Pinus sylvestris
  • shoot scattering
  • vegetation structure

Cite this

Mõttus, M., & Rautiainen, M. (2012). Effects of shoot-level structure on narrowband vegetation indices for Scots pine. In 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012 [6874261] https://doi.org/10.1109/WHISPERS.2012.6874261
Mõttus, Matti ; Rautiainen, Miina. / Effects of shoot-level structure on narrowband vegetation indices for Scots pine. 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012. 2012.
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Mõttus, M & Rautiainen, M 2012, Effects of shoot-level structure on narrowband vegetation indices for Scots pine. in 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012., 6874261, 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012, Shanghai, China, 4/06/12. https://doi.org/10.1109/WHISPERS.2012.6874261

Effects of shoot-level structure on narrowband vegetation indices for Scots pine. / Mõttus, Matti; Rautiainen, Miina.

2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012. 2012. 6874261.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Mõttus M, Rautiainen M. Effects of shoot-level structure on narrowband vegetation indices for Scots pine. In 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012. 2012. 6874261 https://doi.org/10.1109/WHISPERS.2012.6874261