Table 1.

Vegetation indices tested in this study

Vegetation indices	Formula	References
Normalized Difference Vegetation Index (NDVI)	$({\rho }_{800}-{\rho }_{670})/\left({\rho }_{800}+{\rho }_{670}\right)$	Rouse et al. [62]
Red edge chlorophyll index (CIrededge)	${\rho }_{800}/{\rho }_{720}-1$	Gitelson et al. [63]
Green chlorophyll index (CIgreen)	${\rho }_{800}/{\rho }_{550}-1$	Gitelson et al. [63]
Visible Atmospherically Resistant Index (VARI)	$({\rho }_{550}-{\rho }_{670})/\left({\rho }_{550}+{\rho }_{670}\right)$	Gitelson et al. [43]
Ratio Vegetation Index (RVI)	${\rho }_{800}/{\rho }_{670}$	Jordan et al. [64]
Difference Vegetation Index (DVI)	${\rho }_{800}-{\rho }_{670}$	Richardson et al. [65]
Renormalized difference Vegetation Index (RDVI)	$\sqrt{NDVI\times \left({\rho }_{800}-{\rho }_{670}\right)/2}$	Roujean et al. [66]
Enhanced Vegetation Index (EVI)	$2.5\left({\rho }_{800}-{\rho }_{670}\right)/\left({\rho }_{800}+6{\rho }_{670}-7.5{\rho }_{490}+1\right)$	Liu et al. [67]
Triangular Vegetation Index (TVI)	$0.5\left[120\left({\rho }_{800}-{\rho }_{550}\right)-200\left(({\rho }_{670}-{\rho }_{550}\right)\right]$	Broge et al. [68]
Soil Adjusted Vegetation Index (SAVI)	$\left(1+L\right)({\rho }_{800}-{\rho }_{670})/\left({\rho }_{800}+{\rho }_{670}+L\right)$	Huete [69]