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Journal ArticleDOI

Integrated narrow-band vegetation indices for prediction of crop chlorophyll content for application to precision agriculture

TL;DR: In this paper, a combined modeling and indices-based approach is presented to predict the crop chlorophyll content from remote sensing data while minimizing LAI (vegetation parameter) influence and underlying soil background effects.
About: This article is published in Remote Sensing of Environment.The article was published on 2002-08-01. It has received 1516 citations till now. The article focuses on the topics: Enhanced vegetation index & Red edge.
Citations
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Journal ArticleDOI
TL;DR: In this paper, a method for minimizing the effect of leaf chlorophyll content on the prediction of green LAI was presented, and new algorithms that adequately predict the LAI of crop canopies.

1,915 citations


Cites background from "Integrated narrow-band vegetation i..."

  • ...…indices were proposed to capture the photochemical processes associated with photosynthesis activity such as light use efficiency or to estimate leaf pigment content (Broge & Leblanc, 2000; Chappelle et al., 1992; Daughtry et al., 2000; Gamon et al., 1992; Haboudane et al., 2002; Kim et al., 1994)....

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  • ...To uncouple their combined effect, recent studies (Daughtry et al., 2000; Haboudane et al., 2002) have demonstrated that leaf chlorophyll content can be estimated with minimal confounding effects due to LAI through a combination of two kinds of spectral indices: indices sensitive to pigment…...

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  • ...For instance, some spectral indices were proposed to capture the photochemical processes associated with photosynthesis activity such as light use efficiency or to estimate leaf pigment content (Broge & Leblanc, 2000; Chappelle et al., 1992; Daughtry et al., 2000; Gamon et al., 1992; Haboudane et al., 2002; Kim et al., 1994)....

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  • ...To uncouple their combined effect, recent studies (Daughtry et al., 2000; Haboudane et al., 2002) have demonstrated that leaf chlorophyll content can be estimated with minimal confounding effects due to LAI through a combination of two kinds of spectral indices: indices sensitive to pigment concentration and indices resistant to soil optical properties influence....

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Journal ArticleDOI
01 Mar 1980-Nature

1,327 citations

Journal ArticleDOI
TL;DR: A variety of spectral indices now exist for various precision agriculture applications, rather than a focus on only normalised difference vegetation indices as discussed by the authors, and the spectral bandwidth has decreased dramatically with the advent of hyperspectral remote sensing, allowing improved analysis of specific compounds, molecular interactions, crop stress, and crop biophysical or biochemical characteristics.

1,296 citations


Cites background or methods from "Integrated narrow-band vegetation i..."

  • ...…algorithms (Huete & Escadafal, 1991), derivative spectra (Demetriades-Shah, Steven, & Clark, 1990) or spectral indices that adjust for soil effects (Haboudane et al., 2002, 2004) are often used to isolate information about plant characteristics when the reflectance is affected by both sources....

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  • ...A variety of narrow band hyperspectral indices (Table 4) are available for use in precision agriculture (Haboudane et al., 2002, 2004; Li et al., 2010; Miao et al., 2007, 2009)....

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  • ...In theory, it offers the capability of sensing a wide variety of soil and crop characteristics simultaneously, including moisture status, organic matter, nutrients, chlorophyll, carotenoids, cellulose, leaf area index and crop biomass (Goel et al., 2003; Haboudane et al., 2002; Zarco-Tejada et al., 2005)....

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  • ...An aerial hyperspectral imaging system, the compact airborne spectrographic imager (CASI), has also been widely used (Haboudane et al., 2002, 2004)....

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  • ...…it offers the capability of sensing a wide variety of soil and crop characteristics simultaneously, including moisture status, organic matter, nutrients, chlorophyll, carotenoids, cellulose, leaf area index and crop biomass (Goel et al., 2003; Haboudane et al., 2002; Zarco-Tejada et al., 2005)....

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Journal ArticleDOI
TL;DR: The combined PROSPECT leaf optical properties model and SAIL canopy bidirectional reflectance model, also referred to as PROSAIL, has been used for about sixteen years to study plant canopy spectral and directional reflectance in the solar domain this paper.

1,245 citations


Cites methods from "Integrated narrow-band vegetation i..."

  • ...Haboudane et al. (2002) and Zarco-Tejada et al. (2004b) simulated canopy reflectance spectra in the VIS-NIR to test the ratio of TCARI (Transformed Chlorophyll Absorption in Reflectance Index )t o OSAVI (Optimized Soil-Adjusted Vegetation Index), which was expected to be sensitive at low chlorophyll values and resistant to nonphotosynthetic plant materials....

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  • ...Haboudane et al. (2002) and Zarco-Tejada et al. (2004b) simulated canopy reflectance spectra in the VIS-NIR to test the ratio of TCARI (Transformed Chlorophyll Absorption in Reflectance Index) to OSAVI (Optimized Soil-Adjusted Vegetation Index), which was expected to be sensitive at low chlorophyll…...

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Journal ArticleDOI
TL;DR: The spectral characteristics of vegetation are introduced and the development of VIs are summarized, discussing their specific applicability and representativeness according to the vegetation of interest, environment, and implementation precision.
Abstract: Vegetation Indices (VIs) obtained from remote sensing based canopies are quite simple and effective algorithms for quantitative and qualitative evaluations of vegetation cover, vigor, and growth dynamics, among other applications These indices have been widely implemented within RS applications using different airborne and satellite platforms with recent advances using Unmanned Aerial Vehicles (UAV) Up to date, there is no unified mathematical expression that defines all VIs due to the complexity of different light spectra combinations, instrumentation, platforms, and resolutions used Therefore, customized algorithms have been developed and tested against a variety of applications according to specific mathematical expressions that combine visible light radiation, mainly green spectra region, from vegetation, and nonvisible spectra to obtain proxy quantifications of the vegetation surface In the real-world applications, optimization VIs are usually tailored to the specific application requirements coupled with appropriate validation tools and methodologies in the ground The present study introduces the spectral characteristics of vegetation and summarizes the development of VIs and the advantages and disadvantages from different indices developed This paper reviews more than 100 VIs, discussing their specific applicability and representativeness according to the vegetation of interest, environment, and implementation precision Predictably, research, and development of VIs, which are based on hyperspectral and UAV platforms, would have a wide applicability in different areas

1,190 citations

References
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Journal ArticleDOI
TL;DR: In this article, a transformation technique was presented to minimize soil brightness influences from spectral vegetation indices involving red and near-infrared (NIR) wavelengths, which nearly eliminated soil-induced variations in vegetation indices.

5,450 citations

Journal ArticleDOI
TL;DR: In this paper, the extinction coefficients for chlorophylls a and b in diethylether (Smith, J.H. and Benitez, A.V., eds.), used in this paper as primary standards, were verified by magnesium determination using atomic absorbance spectrophotometry.

5,326 citations


"Integrated narrow-band vegetation i..." refers methods in this paper

  • ...The two portions were mixed and the concentration was measured according to Porra, Thompson, and Kriedemann (1989)....

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Journal ArticleDOI
TL;DR: In this paper, a radiative transfer model based on Allen's generalized plate model is proposed to represent the optical properties of plant leaves from 400 nm to 2500 nm, where spectral refractive index (n) and a parameter characterizing the leaf mesophyll structure (N) are used.

2,069 citations


"Integrated narrow-band vegetation i..." refers methods in this paper

  • ...Leaf optical properties were simulated using the PROSPECT model (Jacquemoud & Baret, 1990; Jacquemoud et al., 1996), which simulates upward and downward hemispherical radiation fluxes between 400 and 2400 nm, and relates foliar biochemistry and scattering parameters to leaf reflectance and…...

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Book
04 Oct 2009
TL;DR: In this article, the authors present a review of vector calculus and functions of a complex variable and Fraunhoffer diffraction by a circular hole, and a miscellany of bidirectional reflectances and related quantities.
Abstract: Acknowledgements 1. Introduction 2. Electromagnetic wave propagation 3. The absorption of light 4. Specular reflection 5. Single particle scattering: perfect spheres 6. Single particle scattering: irregular particles 7. Propagation in a nonuniform medium: the equation of radiative transfer 8. The bidirectional reflectance of a semi-infinite medium 9. The opposition effect 10. A miscellany of bidirectional reflectances and related quantities 11. Integrated reflectances and planetary photometry 12. Photometric effects of large scale roughness 13. Polarization 14. Reflectance spectroscopy 15. Thermal emission and emittance spectroscopy 16. Simultaneous transport of energy by radiation and conduction Appendix A. A brief review of vector calculus Appendix B. Functions of a complex variable Appendix C. The wave equation in spherical coordinates Appendix D. Fraunhoffer diffraction by a circular hole Appendix E. Table of symbols Bibliography Index.

1,951 citations


"Integrated narrow-band vegetation i..." refers background in this paper

  • ...(4)) characterizes the optically thick canopy with the single leaf absorption and scattering properties and assumes isotropic scattering (Hapke, 1993)....

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Journal ArticleDOI
TL;DR: In this paper, a wide range of leaf chlorophyll levels were established in field-grown corn (Zea mays L.) with the application of 8 N levels: 0, 12.5%, 25, 50, 75, 100, 125, and 150% of the recommended rate.

1,861 citations


"Integrated narrow-band vegetation i..." refers background or methods or result in this paper

  • ...These characteristics have promoted the development of various approaches, based on model inversion or the use of empirical and semiempirical methods, to estimate the chlorophyll content both at the leaf and canopy scales (Blackburn, 1998b; Datt, 1999; Daughtry et al., 2000; Demarez & Gastellu-Etchegorry, 2000; Gitelson, Merzyak, & Lichtenthaler, 1996; Zarco-Tejada, Miller, Noland, Mohammed, & Sampson, 2001)....

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  • ...Moreover, optical indices developed for chlorophyll content estimation, using crop canopy reflected radiation, are responsive to other vegetation and environmental parameters like LAI and underlying soil reflectance (Daughtry et al., 2000; Kim, Daughtry, Chappelle, McMurtrey, & Walthall, 1994)....

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  • ...MCARI is a measure of the depth of chlorophyll absorption at 670 nm relative to the reflectance at 550 and 700 nm, and is quantified by the following equation where Rijk is the reflectance at the ijk-th wavelength nanometer (Daughtry et al., 2000):...

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  • ...Thus, reflected radiation from crop leaves and canopies has been used both to estimate chlorophyll concentration of crop canopies (Daughtry et al., 2000) and by implication to assess nitrogen variability and stress (Blackmer et al....

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  • ...Thus, reflected radiation from crop leaves and canopies has been used both to estimate chlorophyll concentration of crop canopies (Daughtry et al., 2000) and by implication to assess nitrogen variability and stress (Blackmer et al., 1994, 1996)....

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