Table 2.
Spectral reflectance indices, formula and references of different previously developed and new spectral indices developed and used in this study.
| Spectral reflectance indices | Formula | Reference |
|---|---|---|
| Normalized difference of reflectance between 590 - 550 and 590 + 550 nm | (R590 - R550)/(R590 + R550) | This work |
| Normalized difference of reflectance between 624 - 572 and 624 + 572 nm | (R624 - R572)/(R624 + R672) | This work |
| Normalized difference of reflectance between 710 - 640 and 710 + 640 nm | (R710 - R640)/(R710 + R640) | This work |
| Normalized difference of reflectance between 760 - 550 and 760 + 550 nm | (R760 - R550)/(R760 + R550) | Hackl et al., 2012 |
| Normalized difference of reflectance between 760 - 730 and 760 + 730 nm | (R760 - R730)/(R760 + R730) | Barnes et al., 2000 |
| Normalized difference vegetation index (NDVI) | (R780 - R670)/(R780 + R670) | Rouse et al., 1974 |
| Normalized difference of reflectance between 780 - 720 and 780 + 720 nm | (R780 - R720)/(R780 + R720) | This work |
| Normalized difference of reflectance between 780 - 740 and 780 + 740 | (R780 - R740)/(R780 + R740) | Adapted from Mistele and Schmidhalter, 2008a |
| Normalized difference of reflectance between 800 - 720 and 800 + 720 nm | (R800 - R720)/(R800 + R720) | This work |
| Normalized difference of reflectance between 820 - 660 and 820 + 660 nm | (R820 - R660)/(R820 + R660) | This work |
| Normalized difference of reflectance between 850 - 730 and 850 + 730 nm | (R850 - R730)/(R850 + R730) | This work |
| Normalized difference of reflectance between 952 - 720 and 952 + 720 nm | (R952 - R720)/(R952 + R720) | This work |