Soil heavy metal Cd content inversion method and system, medium and computer equipment

The invention belongs to the technical field of soil heavy metal pollution detection, and discloses an inversion method and system for the content of heavy metal Cd in soil, a medium and computer equipment. An X-ray fluorescence analyzer is used for detecting, and an ASD FieldSpec 3 spectrograph, matched test equipment and a software system are used for obtaining the actual content value and element spectrum information of the heavy metal Cd in the soil respectively; dimensionality reduction processing and characteristic spectrum screening are carried out on the original spectrum, and random forest, artificial neural network and support vector machine model learning and content inversion are carried out by utilizing the characteristic spectrum of the element. The soil heavy metal Cd content inversion system comprises a soil spectrum information module; a heavy metal content prediction module; and a model prediction evaluation module. The method is high in inversion precision and simple and convenient to opera