Study on Spectral Characteristics and Quantitative Estimation of Soil Salinity based on Fractional Order Derivative

doi:10.11873/j.issn.1004-0323.2025.2.0344

Remote Sensing Technology and Application, Volume. 40, Issue 2, 344(2025)

The Research Center of Soil and Water Conservation and Ecological Environment， Chinese Academy of Sciences and Ministry of Education， Yangling712100， China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(8)

Fig. 1. Distribution of soil sampling points

Download full size

View in Article

Fig. 2. Spectral reflectance curves of different salinized soils

Download full size

View in Article

Fig. 3. Soil spectral reflectance curves based on different spectral transformations

Download full size

View in Article

Fig. 4. The correlation coefficient matric between spectral reflectance and soil salinity under different spectral transformations

Download full size

View in Article

Fig. 5. The position of the significant bands and the feature bands of the two screening methods

Download full size

View in Article

Table 1. Table 1Maximum correlation bands of soil salt content under different spectral transformations

View table

View in Article

Table 1. Table 1Maximum correlation bands of soil salt content under different spectral transformations

数学变换	R		√R		1/R		lgR		1/lgR
微分阶数	最大相关波段/nm	相关系数	最大相关波段/nm	相关系数	最大相关波段/nm	相关系数	最大相关波段/nm	相关系数	最大相关波段/nm	相关系数
0	1 989	-0.668	1 989	-0.672	1 989	0.661	1 989	-0.672	1 989	0.649
0.1	1 987	-0.693	1 987	-0.697	1 989	0.690	1 988	-0.698	1 989	0.672
0.2	1 987	-0.719	1 987	-0.726	1 989	0.726	1 987	-0.729	1 989	0.695
0.3	1 987	-0.749	1 987	-0.759	1 987	0.775	1 987	-0.767	1 987	0.719
0.4	1 987	-0.784	1 987	-0.799	1 987	0.843	1 987	-0.814	1 987	0.746
0.5	1 987	-0.820	1 987	-0.844	1 987	0.922	1 987	-0.870	1 987	0.773
0.6	1 967	-0.854	1 967	-0.878	1 978	0.939	1 978	-0.898	1 968	0.798
0.7	1 968	-0.888	1 968	-0.913	1 968	0.929	1 968	-0.931	1 968	0.836
0.8	1 953	-0.872	1 953	-0.894	1 951	0.932	1 953	-0.911	1 968	0.828
0.9	1 949	-0.828	1 949	-0.841	1 942	0.888	2 035	0.852	1 949	0.797
1	1 942	-0.793	2 035	0.819	1 917	0.847	2 035	0.860	1 942	0.754
1.1	1 916	-0.765	2 035	0.812	1 917	0.868	2 035	0.848	1 940	0.745
1.2	1 916	-0.766	1 909	-0.806	1 916	0.865	1 909	-0.843	1 916	0.721
1.3	1 909	-0.756	1 909	-0.794	2 009	-0.879	1 907	-0.834	1 909	0.716
1.4	1 909	-0.732	1 907	-0.767	1 907	0.870	1 907	-0.809	1 909	0.699
1.5	1 909	-0.688	1 907	-0.713	1 907	0.821	1 907	-0.745	1 909	0.660
1.6	1 414	-0.641	1 417	-0.641	1 972	-0.717	1 972	0.669	1 909	0.606
1.7	1 414	-0.630	1 417	-0.633	1 972	-0.727	1 972	0.667	1 417	0.600
1.8	1 417	-0.619	1 417	-0.623	1 922	-0.753	1 972	0.655	1 417	0.593
1.9	1 417	-0.609	1 417	-0.613	1 922	-0.743	1 972	0.633	1 417	0.585
2	1 417	-0.598	1 417	-0.603	1 922	-0.709	2 465	-0.607	1 417	0.575

Table 2. Table 2Construction and accuracy evaluation of soil salt content model

View table

View in Article

Table 2. Table 2Construction and accuracy evaluation of soil salt content model

建模策略			CARS-PLSR		CARS-RF		SPA-PLSR		SPA–RF
数学变换		微分阶数	R²	RMSE/(g·kg^-1)	R²	RMSE/(g·kg^-1)	R²	RMSE/(g·kg^-1)	R²	RMSE/(g·kg^-1)
1/R	0		0.948	0.011	0.555	0.034	0.825	0.020	0.504	0.041
	0.1		0.948	0.013	0.565	0.035	0.844	0.022	0.477	0.044
	0.2		0.899	0.021	0.493	0.035	0.845	0.027	0.654	0.030
	0.3		0.966	0.011	0.535	0.043	0.771	0.023	0.538	0.024
	0.4		0.896	0.023	0.666	0.024	0.877	0.015	0.565	0.038
	0.5		0.552	0.036	0.526	0.035	0.418	0.044	0.544	0.031
	0.6		0.431	0.034	0.384	0.043	0.431	0.040	0.443	0.028
	0.7		0.425	0.038	0.382	0.048	0.427	0.036	0.400	0.041
	0.8		0.440	0.039	0.302	0.045	0.390	0.042	0.396	0.051
	0.9		0.497	0.042	0.366	0.047	0.312	0.044	0.376	0.042
	1		0.471	0.044	0.386	0.045	0.442	0.045	0.525	0.031
	1.1		0.413	0.040	0.393	0.043	0.474	0.032	0.399	0.030
	1.2		0.439	0.047	0.454	0.032	0.368	0.043	0.619	0.026
	1.3		0.747	0.026	0.159	0.059	0.494	0.044	0.398	0.040
	1.4		0.617	0.031	0.478	0.039	0.581	0.038	0.466	0.039
	1.5		0.479	0.050	0.551	0.034	0.511	0.038	0.395	0.032
	1.6		0.556	0.035	0.397	0.039	0.692	0.036	0.136	0.056
	1.7		0.549	0.034	0.335	0.053	0.837	0.021	0.312	0.051
	1.8		0.542	0.034	0.381	0.026	0.618	0.037	0.353	0.038
	1.9		0.308	0.037	0.534	0.030	0.414	0.046	0.286	0.056
	2		0.451	0.030	0.439	0.039	0.500	0.034	0.325	0.051
lgR	0		0.939	0.015	0.421	0.046	0.837	0.023	0.552	0.041
	0.1		0.962	0.012	0.599	0.031	0.866	0.017	0.379	0.047
	0.2		0.960	0.011	0.518	0.038	0.810	0.026	0.491	0.039
	0.3		0.900	0.022	0.561	0.034	0.891	0.017	0.622	0.021
	0.4		0.873	0.016	0.546	0.043	0.859	0.021	0.477	0.048
	0.5		0.900	0.019	0.462	0.043	0.681	0.032	0.544	0.037
	0.6		0.896	0.019	0.512	0.045	0.847	0.016	0.420	0.042
	0.7		0.490	0.038	0.461	0.044	0.390	0.044	0.358	0.050
	0.8		0.366	0.043	0.544	0.027	0.426	0.041	0.312	0.048
	0.9		0.420	0.044	0.228	0.058	0.524	0.045	0.315	0.046
	1		0.585	0.038	0.386	0.039	0.288	0.055	0.414	0.030
	1.1		0.385	0.045	0.267	0.044	0.533	0.041	0.160	0.050
	1.2		0.408	0.036	0.365	0.044	0.443	0.044	0.304	0.054
	1.3		0.637	0.037	0.277	0.049	0.713	0.029	0.330	0.050
	1.4		0.476	0.047	0.341	0.042	0.444	0.042	0.497	0.037
	1.5		0.449	0.042	0.287	0.056	0.558	0.033	0.226	0.047
	1.6		0.395	0.041	0.553	0.038	0.458	0.039	0.405	0.027
	1.7		0.625	0.030	0.462	0.024	0.408	0.040	0.568	0.035
	1.8		0.533	0.033	0.462	0.033	0.480	0.044	0.392	0.030
	1.9		0.574	0.032	0.306	0.033	0.461	0.038	0.467	0.032
	2		0.608	0.027	0.248	0.035	0.591	0.033	0.469	0.031
1/lgR	0		0.837	0.021	0.566	0.031	0.662	0.032	0.412	0.040
	0.1		0.902	0.016	0.575	0.027	0.778	0.027	0.539	0.041
	0.2		0.913	0.016	0.488	0.040	0.628	0.030	0.591	0.036
	0.3		0.762	0.029	0.445	0.025	0.531	0.038	0.456	0.029
	0.4		0.748	0.024	0.456	0.045	0.510	0.028	0.627	0.033
	0.5		0.785	0.025	0.329	0.042	0.553	0.035	0.487	0.043
	0.6		0.732	0.027	0.586	0.027	0.471	0.046	0.407	0.037
	0.7		0.698	0.034	0.481	0.036	0.647	0.025	0.545	0.034
	0.8		0.707	0.031	0.469	0.044	0.412	0.048	0.377	0.045
	0.9		0.519	0.048	0.228	0.049	0.208	0.052	0.449	0.044
	1		0.332	0.049	0.426	0.037	0.304	0.040	0.487	0.032
	1.1		0.428	0.045	0.456	0.039	0.480	0.036	0.291	0.037
	1.2		0.405	0.054	0.489	0.043	0.445	0.043	0.355	0.047
	1.3		0.540	0.027	0.592	0.039	0.400	0.027	0.441	0.044
	1.4		0.519	0.037	0.387	0.036	0.422	0.033	0.414	0.037
	1.5		0.475	0.043	0.412	0.041	0.557	0.039	0.286	0.051
	1.6		0.388	0.044	0.433	0.039	0.254	0.037	0.346	0.051
	1.7		0.291	0.055	0.419	0.044	0.360	0.040	0.313	0.052
	1.8		0.631	0.032	0.347	0.045	0.179	0.046	0.369	0.042
	1.9		0.295	0.051	0.379	0.037	0.142	0.039	0.218	0.052
	2		0.596	0.035	0.385	0.032	0.422	0.036	0.261	0.041

Table 2. Table 2Construction and accuracy evaluation of soil salt content model

View table

View in Article

Table 2. Table 2Construction and accuracy evaluation of soil salt content model

建模策略			CARS-PLSR		CARS-RF		SPA-PLSR		SPA–RF
数学变换		微分阶数	R²	RMSE/(g·kg^-1)	R²	RMSE/(g·kg^-1)	R²	RMSE/(g·kg^-1)	R²	RMSE/(g·kg^-1)
R	0		0.872	0.017	0.299	0.047	0.815	0.027	0.419	0.044
	0.1		0.893	0.018	0.494	0.045	0.724	0.035	0.357	0.038
	0.2		0.870	0.024	0.495	0.041	0.586	0.037	0.504	0.036
	0.3		0.872	0.019	0.546	0.042	0.649	0.041	0.481	0.047
	0.4		0.764	0.031	0.429	0.049	0.819	0.027	0.480	0.032
	0.5		0.835	0.022	0.520	0.035	0.566	0.039	0.159	0.030
	0.6		0.847	0.025	0.576	0.021	0.732	0.029	0.480	0.044
	0.7		0.805	0.023	0.402	0.045	0.759	0.023	0.494	0.044
	0.8		0.726	0.028	0.444	0.037	0.610	0.034	0.357	0.048
	0.9		0.540	0.040	0.597	0.033	0.432	0.051	0.307	0.053
	1		0.368	0.040	0.370	0.038	0.357	0.040	0.348	0.049
	1.1		0.384	0.036	0.401	0.038	0.436	0.040	0.353	0.043
	1.2		0.391	0.047	0.610	0.032	0.470	0.038	0.550	0.037
	1.3		0.262	0.057	0.349	0.048	0.433	0.037	0.383	0.050
	1.4		0.450	0.045	0.401	0.040	0.474	0.036	0.365	0.043
	1.5		0.522	0.038	0.603	0.033	0.474	0.041	0.463	0.040
	1.6		0.483	0.045	0.342	0.042	0.538	0.039	0.363	0.048
	1.7		0.534	0.034	0.228	0.040	0.599	0.034	0.447	0.040
	1.8		0.488	0.037	0.246	0.050	0.486	0.034	0.386	0.042
	1.9		0.532	0.032	0.283	0.033	0.316	0.036	0.219	0.048
	2		0.471	0.029	0.344	0.041	0.536	0.040	0.281	0.055
$\sqrt[]{R}$	0		0.904	0.011	0.493	0.039	0.728	0.032	0.541	0.034
	0.1		0.912	0.019	0.511	0.044	0.696	0.028	0.457	0.045
	0.2		0.911	0.014	0.528	0.037	0.794	0.025	0.670	0.026
	0.3		0.877	0.018	0.422	0.050	0.695	0.034	0.555	0.038
	0.4		0.884	0.019	0.507	0.039	0.783	0.026	0.374	0.045
	0.5		0.831	0.021	0.444	0.029	0.783	0.027	0.575	0.038
	0.6		0.828	0.023	0.583	0.031	0.767	0.022	0.494	0.031
	0.7		0.829	0.021	0.435	0.045	0.763	0.026	0.358	0.048
	0.8		0.379	0.027	0.527	0.035	0.360	0.039	0.376	0.047
	0.9		0.376	0.041	0.368	0.032	0.435	0.046	0.368	0.047
	1		0.641	0.031	0.205	0.061	0.564	0.022	0.289	0.027
	1.1		0.558	0.040	0.506	0.040	0.275	0.052	0.466	0.035
	1.2		0.624	0.033	0.283	0.048	0.383	0.044	0.382	0.044
	1.3		0.542	0.039	0.403	0.038	0.683	0.034	0.377	0.032
	1.4		0.589	0.034	0.365	0.037	0.379	0.046	0.389	0.045
	1.5		0.482	0.039	0.414	0.044	0.555	0.033	0.139	0.056
	1.6		0.350	0.034	0.411	0.047	0.571	0.034	0.418	0.026
	1.7		0.319	0.053	0.314	0.045	0.616	0.038	0.260	0.047
	1.8		0.563	0.031	0.346	0.045	0.584	0.033	0.425	0.035
	1.9		0.414	0.052	0.371	0.032	0.544	0.033	0.450	0.036
	2		0.444	0.054	0.400	0.046	0.455	0.037	0.376	0.042

Tools

Get Citation

Copy Citation Text

. Study on Spectral Characteristics and Quantitative Estimation of Soil Salinity based on Fractional Order Derivative[J]. Remote Sensing Technology and Application, 2025, 40(2): 344

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category:

Received: Mar. 6, 2023

Accepted: --

Published Online: May. 23, 2025

The Author Email:

DOI:10.11873/j.issn.1004-0323.2025.2.0344

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology