Table 3.
Vegetation index calculation formulas.
| Vegetation index | Calculation formula | Reference |
|---|---|---|
| GRVI | GRVI=(Rgreen-Rred)/(Rgreen+Rred) | (Chen et al., 2019) |
| GOSAVI | GOSAVI=(Rnir-Rgreen)/(Rnir+Rgreen+0.16) | (Gilabert et al., 2002) |
| NDVI | NDVI=(Rnir-Rred)/(Rnir+Rred) | (Pei et al., 2023) |
| OSAVI | OSAVI=(1 + 0.16)*[(Rnir-Rred)/(Rnir+Rred+0.16)] | (Li T, et al., 2024) |
| RVI | RVI=Rnir/Rred | (Pokhrel et al., 2023) |
| MSR | MSR=((Rnir/Rred)-1)/(((Rnir/Rred)+1)0.5) | (Fan et al., 2024) |
| SAVI | SAVI=(1 + 0.5)*[(Rnir-Rred)/(Rnir+Rred+0.5)] | (Cao et al., 2013) |
| DVI | DVI=Rnir-Rred | (Naito et al., 2017) |
| NDRE | NDRE=(Rnir-Rrededge)/(Rnir+Rrededge) | (Gu et al., 2024) |
| REOSAVI | REOSAVI=(1 + 0.16)*(Rnir-Rrededge)/(Rnir+Rrededge+0.16) | (Cao et al., 2013) |
| RETVI | RETVI=0.5*(120*Rnir-Rred)-200*(Rrededge-Rred) | (Cao et al., 2013) |
| NDRE_GOSAVI | NDRE_GOSAVI=NDRE/GOSAVI | (Cao et al., 2013) |