Characterizing canopy biochemistry from imaging spectroscopy and its application to ecosystem studies

Raymond F. Kokaly, Gregory P. Asner, Scott V. Ollinger, Mary E. Martin, Carol A. Wessman

Research output: Contribution to journalArticle

312 Citations (Scopus)

Abstract

For two decades, remotely sensed data from imaging spectrometers have been used to estimate non-pigment biochemical constituents of vegetation, including water, nitrogen, cellulose, and lignin. This interest has been motivated by the important role that these substances play in physiological processes such as photosynthesis, their relationships with ecosystem processes such as litter decomposition and nutrient cycling, and their use in identifying key plant species and functional groups. This paper reviews three areas of research to improve the application of imaging spectrometers to quantify non-pigment biochemical constituents of plants. First, we examine recent empirical and modeling studies that have advanced our understanding of leaf and canopy reflectance spectra in relation to plant biochemistry. Next, we present recent examples of how spectroscopic remote sensing methods are applied to characterize vegetation canopies, communities and ecosystems. Third, we highlight the latest developments in using imaging spectrometer data to quantify net primary production (NPP) over large geographic areas. Finally, we discuss the major challenges in quantifying non-pigment biochemical constituents of plant canopies from remotely sensed spectra.

Original languageEnglish (US)
Pages (from-to)S78-S91
JournalRemote Sensing of Environment
Volume113
Issue numberSUPPL. 1
DOIs
StatePublished - Sep 1 2009
Externally publishedYes

Fingerprint

Biochemistry
biochemistry
spectrometers
Ecosystems
Spectrometers
spectroscopy
spectrometer
canopy
image analysis
Spectroscopy
Imaging techniques
ecosystems
ecosystem
canopy reflectance
plant biochemistry
Photosynthesis
vegetation
net primary production
nutrient cycling
Lignin

Keywords

  • AVIRIS
  • Canopy chemistry
  • Cellulose
  • Hyperspectral
  • Imaging spectroscopy
  • Lignin
  • Net primary production
  • Nitrogen
  • NPP
  • Water

ASJC Scopus subject areas

  • Soil Science
  • Geology
  • Computers in Earth Sciences

Cite this

Characterizing canopy biochemistry from imaging spectroscopy and its application to ecosystem studies. / Kokaly, Raymond F.; Asner, Gregory P.; Ollinger, Scott V.; Martin, Mary E.; Wessman, Carol A.

In: Remote Sensing of Environment, Vol. 113, No. SUPPL. 1, 01.09.2009, p. S78-S91.

Research output: Contribution to journalArticle

Kokaly, Raymond F. ; Asner, Gregory P. ; Ollinger, Scott V. ; Martin, Mary E. ; Wessman, Carol A. / Characterizing canopy biochemistry from imaging spectroscopy and its application to ecosystem studies. In: Remote Sensing of Environment. 2009 ; Vol. 113, No. SUPPL. 1. pp. S78-S91.
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