Estimating the heavy metal contents in farmland soil from hyperspectral images based on Stacked AdaBoost ensemble learning

•Assessment of heavy metal pollution in soil base on hyperspectral image.•Estimating the soil heavy metal content by constructing ensemble learning model.•The estimation accuracy of heavy metal content in soil is improved.•Mapping the distribution trend of heavy metals in farmland soil.•The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.