Quantitative Estimating Salt Content of Saline Soil Using Laboratory Hyperspectral Data Treated by Fractional Derivative

Table 4

The results of the PLSR models based on .

Order	Bands	Components					RPD
0	0
0.2	261	3	27.107	0.258	26.925	0.226	1.136
0.4	851	3	25.111	0.363	23.346	0.418	1.311
0.6	767	3	22.481	0.489	20.527	0.550	1.491
0.8	622	4	19.510	0.615	17.151	0.686	1.784
1	376	4	18.012	0.672	18.780	0.623	1.629
1.2	209	4	16.672	0.719	18.360	0.640	1.667
1.4	130	3	18.366	0.659	17.858	0.659	1.713
1.6	80	3	18.121	0.668	20.744	0.540	1.475
1.8	47	3	21.771	0.521	23.194	0.425	1.319
2	29	2	26.389	0.297	29.987	0.040	1.020