Table 4 Vegetation indices extracted from spectral data

NDVI

Normalized difference vegetation index

\( \frac{\mathrm{SUM}\ R\left(760:900\right)/141-\mathrm{SUM}\ R\left(630:900\right)/271}{\mathrm{SUM}\ R\left(760:900\right)+\mathrm{SUM}\ R\left(630:900\right)/271} \)

Richardson and Wiegand (1977)

NDVI (810,450)

Normalized difference vegetation index

\( \mathrm{NDVI}\ \left(810,450\right)=\frac{\left({R}_{810}-{R}_{450}\right)}{\left({R}_{810}+{R}_{450}\right)} \)

Richardson and Wiegand (1977)

NDVI (810,680)

Normalized difference vegetation index

\( \mathrm{NDVI}\ \left(810,680\right)=\frac{\left({R}_{810}-{R}_{680}\right)}{\left({R}_{810}+{R}_{680}\right)} \)

Richardson and Wiegand (1977)

NDVI (560,680)

Normalized difference vegetation index

\( \mathrm{NDVI}\ \left(560,680\right)=\frac{\left({R}_{560}-{R}_{680}\right)}{\left({R}_{560}+{R}_{680}\right)} \)

Richardson and Wiegand (1977)

RVI

Ratio vegetation index

\( \frac{\mathrm{SUM}\ R\left(760:900\right)/141}{\mathrm{SUM}\ R\left(630:900\right)/271} \)

Wu and Niu (2008)

DVI

Deferent vegetable index

DVI = SUM R(760:900)/141 – SUM R(630:900)/271

Chen (1996)

PRI

Photochemical reflectance Index

\( \mathrm{PRI}=\frac{R_{570}-{R}_{531}}{R_{570}+{R}_{531}} \)

Carter and Miller (1994)

MSR

Modified simple ratio

\( \mathrm{MSR}=\frac{\frac{R_{800}}{R_{670}}-1}{\mathrm{sqrt}\left(\frac{R_{800}}{R_{670}}+1\right)} \)

Blackburn (1998)

PSI

Plant stress index

\( \mathrm{PSI}=\frac{R_{695}}{R_{760}} \)

Hunt and Rock (1989)

RVSI1

Ratio vegetation stress index

\( \mathrm{PVSI}1=\frac{R_{600}}{R_{760}} \)

Hunt and Rock (1989)

RVSI2

Ratio vegetation stress index

\( \mathrm{PVSI}2=\frac{R_{710}}{R_{760}} \)

Hunt and Rock (1989)

PSSR

Pigment specific simple ratio

\( \mathrm{PSSR}=\frac{R_{800}}{R_{635}} \)

Penuelas et al. (1997)