Integrated narrow-band vegetation indices for prediction of crop chlorophyll content for application to precision agriculture
Citations
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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1,327 citations
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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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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1,190 citations
References
5,450 citations
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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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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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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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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