Table 2.

Vegetation Indices (VI) tested in this study

VI	Formula	References
NDVI	$({\rho }_{\mathit{NIR}}-{\rho }_{\mathit{red}})/({\rho }_{\mathit{NIR}}+{\rho }_{\mathit{red}})$	Rouse et al. [71]
EVI2	$2.5\times ({\rho }_{\mathit{NIR}}-{\rho }_{\mathit{red}})/(1+{\rho }_{\mathit{NIR}}+2.4\times {\rho }_{\mathit{red}})$	Jiang et al. [35]
WDRVI	$(\alpha \times {\rho }_{\mathit{NIR}}-{\rho }_{\mathit{red}})/(\alpha \times {\rho }_{\mathit{NIR}}+{\rho }_{\mathit{red}})$, $\alpha =0.2$	Gitelson et al. [72]
${\text{CI}}_{\text{green}}$	${\rho }_{\mathit{NIR}}/{\rho }_{\mathit{green}}-1$	Gitelson et al. [73]
${\text{CI}}_{\text{rededge}}$	${\rho }_{\mathit{NIR}}/{\rho }_{\mathit{rededge}}-1$	Gitelson et al. [73]
NDRE	$({\rho }_{\mathit{NIR}}-{\rho }_{\mathit{rededge}})/({\rho }_{\mathit{NIR}}+{\rho }_{\mathit{rededge}})$	Gitelson et al. [74]
MTCI	$({\rho }_{\mathit{NIR}}-{\rho }_{\mathit{rededge}})/({\rho }_{\mathit{rededge}}-{\rho }_{\mathit{red}})$	Dash et al. [75]
OSAVI	$(1+0.16)\times ({\rho }_{\mathit{NIR}}-{\rho }_{\mathit{rededge}})/({\rho }_{\mathit{NIR}}+{\rho }_{\mathit{rededge}}+0.16)$	Steven et al. [76]