Rui ZHAO, Hai-yan SONG, Yao ZHAO, Qin SU, Wei LI, Yi-shu SUN, Ying-min CHEN. Research on Anti-Moisture Interference Soil Organic Matter Model Based on Characteristic Wavelength Integration Algorithm[J]. Spectroscopy and Spectral Analysis, 2022, 42(3): 984
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 3, 984 (2022)
Fig. 1. Spectra of all the 140 soil samples
Fig. 2. The RMSE and characteristic wavelengths distribution curves after SPA
Fig. 3. Average spectra of wet soil samples with different moisture content
Fig. 4. Spectra of reconstructed soil sample in different moisture content (taking the organic matter content of 32.57 g·kg-1 as an example)
(a): 5%; (b): 10%; (c): 15%; (d): 17%
(a): 5%; (b): 10%; (c): 15%; (d): 17%
Fig. 5. Wavelength modeling (a) and integral modeling (b) comparison of SOM measured and SOM predicted values
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Table 1. Comparison of statistical parameters in wavelength and integration modeling
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Table 2. Comparison of prediction model parameters of SOM in wet soil
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