Decomposition of volume scattering, polarized light and chlorophyll fluorescence by in-situ polarization measurement

The remotely sensed radiation of green vegetation canopy over the spectral region of 350-2500 nm typically mixes with three components of different optical properties, namely the leaf interior volume scattering, canopy surface polarized light and leaf internal emitted chlorophyll fluorescence (ChlF). They are tightly superimposed together but convey different information of vegetation. This study emphasizes the distinction of the three radiant fluxes above and disentangles them from the observed apparent radiance of Scindapsus aureus canopy by in-situ polarization measurements. Results demonstrate that the polarization measurement enables the quantitatively separation of the volume scattering, polarized light and ChlF. This study provides further understanding of light scattering properties of the vegetation canopy and particularly has the potential of allowing improvements of current reflectance-based vegetation models.

[1]  Ismael Moya,et al.  Effect of canopy structure on sun-induced chlorophyll fluorescence , 2012 .

[2]  J. Chowdhary,et al.  Retrieval of chlorophyll fluorescence from reflectance spectra through polarization discrimination: modeling and experiments. , 2006, Applied optics.

[3]  W. Verhoef,et al.  Performance of spectral fitting methods for vegetation fluorescence quantification , 2010 .

[4]  Viacheslav I. Kharuk,et al.  Polarimetric indication of plant stress , 1990 .

[5]  Wu Taixia,et al.  The bidirectional polarized reflectance model of soil , 2005, IEEE Transactions on Geoscience and Remote Sensing.

[6]  J. A. Plascyk,et al.  The Fraunhofer Line Discriminator MKII-An Airborne Instrument for Precise and Standardized Ecological Luminescence Measurement , 1975, IEEE Transactions on Instrumentation and Measurement.

[7]  Luis Alonso,et al.  Remote sensing of solar-induced chlorophyll fluorescence: Review of methods and applications , 2009 .

[8]  Michele Meroni,et al.  Assessing Steady-state Fluorescence and PRI from Hyperspectral Proximal Sensing as Early Indicators of Plant Stress: The Case of Ozone Exposure , 2008, Sensors.

[9]  Vern C. Vanderbilt,et al.  Polarized and non-polarized leaf reflectances of Coleus blumei , 1987 .

[10]  Óscar Pérez-Priego,et al.  Detection of water stress in orchard trees with a high-resolution spectrometer through chlorophyll fluorescence in-filling of the O/sub 2/-A band , 2005, IEEE Transactions on Geoscience and Remote Sensing.

[11]  J Scott Tyo,et al.  Review of passive imaging polarimetry for remote sensing applications. , 2006, Applied optics.

[12]  Maurice Herman,et al.  Polarization of light reflected by crop canopies , 1991 .

[13]  S. Jacquemoud,et al.  Leaf BRDF measurements and model for specular and diffuse components differentiation , 2005 .