As an important indicator of soil fertility, quantitatively and rapidly monitoring soil organic carbon has become a hot spot in precision agriculture research. In this paper, Shajiang black soil samples were collected from Huaihe plain area of Anhui Province to conduct a series of experiments, including physical and chemical analysis, pretreatment and outdoor spectral measurement. Based on the original spectral reflectance of the soil, the characteristic of soil spectral response was analyzed by extracting ...