Development of a soil heavy metal estimation method based on a spectral index: Combining fractional-order derivative pretreatment and the absorption mechanism
Lihan Chen, Jian Lai, Kun Tan, Xue Wang, Yu Chen, Jianwei Ding
Abstract
= 0.63 for Pb). The main spectral absorption mechanisms and modes of heavy metals were also analyzed. This estimation method combining FOD and a three-band index will provide a reference to estimate soil heavy metals using Vis-NIR spectra over a large scale.
Topics & Concepts
Hyperspectral imagingPartial least squares regressionChemistrySpectral bandsAnalytical Chemistry (journal)MathematicsEnvironmental scienceRemote sensingEnvironmental chemistryStatisticsComputer scienceArtificial intelligenceGeologyGeochemistry and Geologic MappingSoil Geostatistics and MappingRemote-Sensing Image Classification