Table 2 Regression equations for plant diversity based on the spectral first-derivative values in central Hunshandak Sandland, China.
From: Assessment of plant species diversity based on hyperspectral indices at a fine scale
Diversity indices | Regression equation | R2 | Adjusted R2 | RMSE |
|---|---|---|---|---|
Simpson | Y = 2080.41FD654 − 60.515FD976 + 914.312FD790 + 504.106FD822 − 375.627FD852 + 0.247 | 0.894 | 0.863 | 0.011 |
Pielou | Y = 3003.342FD654 − 77.729FD976 + 69.338FD966 + 938.853FD790 + 1.087 | 0.889 | 0.864 | 0.043 |
Shannon-Wiener | Y = 321.434FD654 − 38.89FD976 + 31.274FD966 + 204.216FD847 + 122.714FD853 + 0.258 | 0.885 | 0.851 | 0.003 |
Margalef | Y = 4809.25FD421 − 268.FD911 − 431.53FD859 + 585.59FD800 + 5.292 | 0.831 | 0.795 | 0.102 |
Gleason | Y = 3718.52FD421 − 178.88FD911 − 225.22FD859 + 314.06FD800 + 51.163 | 0.843 | 0.809 | 3.031 |
