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Mid-Infrared spectroscopy for soil organic carbon estimation. Part I: Global review and meta-analysis
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DOI：10.1016/j.still.2026.107236.png)
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Abstract
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• First global meta-analysis of MIR spectroscopy for SOC estimation • Sample preparation, spectral resolution, and scan count are associated with difference in model performance • Advanced preprocessing methods (MSC, SGD are frequently associated with higher SOC prediction accuracy • Future work should explore hybrid preprocessing and chemometric models integrated with AI
Keywords:
Mid-infrared spectroscopy
Spectral pretreatment
Chemometric techniques
PRISMA review
Meta-analysis
Bibliometrics
Soil sample preparation
Carbon sequestration
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