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

Table 2

The results of the models based on raw reflectance.

Order	Bands	Components					RPD
0	0
0.2	112	3	26.644	0.283	25.004	0.332	1.224
0.4	736	3	25.165	0.361	22.733	0.448	1.346
0.6	907	4	19.260	0.626	16.552	0.707	1.849
0.8	845	4	17.642	0.686	16.484	0.710	1.856
1	510	4	16.143	0.737	16.938	0.694	1.807
1.2	234	4	15.394	0.761	16.599	0.706	1.844
1.4	123	3	16.924	0.711	16.743	0.701	1.828
1.6	75	3	17.919	0.676	19.965	0.575	1.533
1.8	43	3	21.438	0.536	23.999	0.385	1.275
2	29	2	26.596	0.286	30.427	0.011	1.006