The aim of the study is to identify relationships between the agrochemical indicators of the arable layer (humus content, mobile phosphorus, exchangeable potassium, and pH values of exchangeable acidity), field moisture, and spectral characteristics of soils in order to assess the degree of erosion under the conditions of the Chuvash Republic. The studies were carried out at five test sites (14 sampling points) on sod-podzolic soils, gray forest soils, leached chernozems, and their eroded varieties.
