Monitoring plant response to phenanthrene using the red edge of canopy hyperspectral reflectance

Mar Pollut Bull. 2014 Sep 15;86(1-2):332-341. doi: 10.1016/j.marpolbul.2014.06.046. Epub 2014 Jul 16.

Abstract

To investigate the mechanisms and potential for the remote sensing of phenanthrene-induced vegetation stress, we measured field canopy spectra, and associated plant and soil parameters in the field controlled experiment in the Yellow River Delta of China. Two widely distributed plant communities, separately dominated by reed (Phragmites australis) and glaucous seepweed (Suaeda salsa), were treated with different doses of phenanthrene. The canopy spectral changes of plant community resulted from the decreases of biomass and foliar projective coverage, while leaf photosynthetic pigment concentrations showed no significance difference among treatments. The spectral response to phenanthrene included a flattened red edge, with decreased first derivative of reflectance. The red edge slope and area consistently responded to phenanthrene, showing a strong relationship with aboveground biomass, coverage and canopy pigments density. These results suggest the potential of remote sensing and the importance of field validation to correctly interpret the causes of the spectral changes.

Keywords: Field canopy spectroscopy; Hyperspectral; Oil pollution; Oil spill; Polycyclic aromatic hydrocarbons; Remote sensing.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biomass
  • Chenopodiaceae / drug effects
  • Chenopodiaceae / growth & development*
  • China
  • Environmental Monitoring / methods*
  • Phenanthrenes / toxicity*
  • Plant Leaves / drug effects
  • Plant Leaves / metabolism
  • Poaceae / drug effects
  • Poaceae / growth & development*
  • Remote Sensing Technology / methods
  • Rivers
  • Soil / chemistry
  • Spectrum Analysis

Substances

  • Phenanthrenes
  • Soil
  • phenanthrene