Аннотация:The study was performed at a farm situated on the North of Udmurt
Republic of Russia. Eight soil types and subtypes that are typical for the south taiga
zone were detected on the territory of 19 square km. Digital soil maps were
produced using three algorithms on the base of two sets of covariates: terrain
attributes and land use with and without legacy soil map. Texture of upper soil layer
was determined by two methods: in the field and by the method of laser
diffractometry. Digital texture maps were made using regression kriging on the
base of the same two sets of covariates. The influence of the legacy soil map as
covariate on digital soil maps was negligible, despite the fact that this legacy map
was evaluated by experts as very good. This can be explained by the fact that the
legacy and digital soil maps were made on the basis of the same relationships: soil
formation factors - soils. Digital maps of the upper soil horizon texture produced on
the base of two methods were similar to 40%. They were similar to legacy texture
map also about to 40%.
The study was partially supported by RSF grant 15-16-30007