Comparison of soil exchangeable calcium estimated using five extractants and near-infrared spectroscopy - Wang, Zhufeng; Wang, Yugang; Peng, Fei; Xing, Dengchun; Lin, Litao; Feng, Wenting (Geoderma Regional, 2025)
Keywords: Arid regions; carbon sequestration; Cation exchange capacity; climate; EDTA (chelating agent); Exchangeable calcium; humidity; Near-infrared spectroscopy; Partial least squares regression; plant growth; potassium chloride; rapid methods; reflectance; sodium acetate; sodium sulfate; soil pH; soil structure; support vector machines; Exchangeable calcium; Cation exchange capacity; Partial least squares regression; Arid regions; Near-infrared spectroscopy