Assessment of calibration methods for nitrogen estimation in wet and dry soil samples with different wavelength ranges using near-infrared spectroscopy
Qinqin Wang, Hao Zhang, Fadong Li, Congke Gu, Yunfeng Qiao, Siyuan Huang
Topics & Concepts
CalibrationWavelengthPartial least squares regressionNear-infrared spectroscopySoil testWater contentSoil scienceLinear regressionMathematicsEnvironmental scienceStatisticsMaterials scienceSoil waterOpticsPhysicsOptoelectronicsEngineeringGeotechnical engineeringSoil Geostatistics and MappingSpectroscopy and Chemometric AnalysesRemote Sensing in Agriculture