Model type

Simulated equations

Determination coefficient (R²)

Root mean square error (RMSE)

Slope

NDVI

y = 2.11 + 7.25x

0.77**

1.60

2.11

DVI

y = 2.11 + 74.74x

0.69**

1.59

2.11

RVI

y = −7.06 + 9.19x

0.76**

0.63

−7.06

SMLR

y = 2.00 + 11.11NDVI (R440, R470) − 0.39NDVI (R650, R2060) + 20.07DVI (R430, R460)

0.78**

2.04

2.00

BP

0.86**

0.05