2023
DOI: 10.1371/journal.pone.0286825
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Improved multivariate modeling for soil organic matter content estimation using hyperspectral indexes and characteristic bands

Abstract: Soil organic matter (SOM) is a key index of soil fertility. Calculating spectral index and screening characteristic band reduce redundancy information of hyperspectral data, and improve the accuracy of SOM prediction. This study aimed to compare the improvement of model accuracy by spectral index and characteristic band. This study collected 178 samples of topsoil (0–20 cm) in the central plain of Jiangsu, East China. Firstly, visible and near-infrared (VNIR, 350–2500 nm) reflectance spectra were measured usin… Show more

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