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

Table 3

The results of the PLSR models based on .

Order	Bands	Components					RPD
0	0
0.2	120	3	26.640	0.283	25.038	0.331	1.222
0.4	782	3	25.168	0.361	22.844	0.443	1.340
0.6	908	4	19.918	0.600	16.977	0.692	1.803
0.8	782	4	17.886	0.677	16.684	0.703	1.834
1	488	4	16.736	0.717	17.660	0.667	1.733
1.2	223	4	15.338	0.762	16.624	0.704	1.841
1.4	129	3	17.089	0.705	17.010	0.691	1.799
1.6	75	3	17.847	0.678	20.107	0.568	1.522
1.8	44	3	21.305	0.541	24.122	0.378	1.268
2	31	2	26.482	0.292	30.565	0.002	1.001