Table 2 Quantitative relationships between the Fv/Fm absorbed (y) by wheat canopies and hyperspectral VIs (x).
From: Assessment of Fv/Fm absorbed by wheat canopies employing in-situ hyperspectral vegetation indexes
VIs | Model | R 2 | RRMSE |
|---|---|---|---|
SR[415, 710] | y = 0.1037e3.0714x | 0.719++ | 0.184 |
VIopt2 | y = 0.2164e0.9382x | 0.734++ | 0.176 |
MTCI | y = 1.2577e1.9453x | 0.859++ | 0.116 |
NDI | y = 0.2361e2.7634x | 0.773++ | 0.148 |
NPCI | y = 0.1843e1.5271x | 0.874++ | 0.109 |
MCARI | y = 1.2543e2.1641x | 0.745++ | 0.169 |
NDVI[760, 708] | y = 0.4925e2.0015x | 0.809++ | 0.135 |
NDVI[800, 600] | y = 0.9325e1.8542x | 0.781++ | 0.142 |
NDVI[800, 700] | y = 1.7162e1.1539x | 0.769++ | 0.151 |
NDIV[900, 680] | y = 2.0192e1.1934x | 0.834++ | 0.126 |
