Inversion of chlorophyll content under the stress of leaf mite for jujube based on model PSO-ELM method.

When the original spectrum is transformed by the first derivative, the correlation with the chlorophyll content of jujube leaves is significantly enhanced in some wavelength bands, among which it reaches a very significant positive correlation at 660, 685, 735, and 754 nm, and at 550, 588, 633, and 702 nm highly significant negative correlation.

also in 132,142 other papers