Abstract:Rapid quantification of soil organic matter (SOM) is a great challenge for the health assessment and fertility management of agricultural soil. Laser-induced breakdown spectroscopy (LIBS) with appropriate modeling algorithms is an alternative tool for this measurement. However, the current calibration strategy limits the prediction performance of the LIBS technique. In this study, 563 soil samples from Hetao Irrigation District in China were collected; the LIBS spectra of the soils were recorded in the wavenum… Show more
“…APS and MC were values obtained by analyzing the equation with the studied factors, BU, DU, and Fi, which had R 2 values of 0.735, 0.858, and 94.4, respectively. In general, good models have high R 2 values (close to or equal to 1) [ 61 ].…”
“…APS and MC were values obtained by analyzing the equation with the studied factors, BU, DU, and Fi, which had R 2 values of 0.735, 0.858, and 94.4, respectively. In general, good models have high R 2 values (close to or equal to 1) [ 61 ].…”
“…There are many overviews of machine learning applications in LIBS analysis. , Hu et al utilized a mobile LIBS system (mobileLIBS) with a spectral range of 288–950 nm to measure SOM. The system was calibrated using 563 soil samples, with SOM determined via potassium dichromate oxidation colorimetry.…”
Section: Spectroscopy Techniques For Soil Organic Matter Analysismentioning
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