Preliminary Study on Soil Survey and Mapping for Soil Taxonomy

Chinese Soil Taxonomy has been basically formed,but there is no corresponding technical study on soil survey methods.Based on major soil profiles,checking soil profiles and delimitation soil profiles,by using the spatial interpolation methods 64 points of soil profiles were dug in four experimental lines,the diagnostic horizons and diagnostic characteristics of those profiles were used to determine the soil types in the studying area and to draw the boundary lines of soil map.A checking line was used to check the precision of the soil map and the result showed that the accuracy rate was as high as 95%,which proved it possible to use the spatial interpolation methods on the soil survey and mapping based on soil taxonomy.Combined with the soil landscapes,it can help soil investigators to determine the soil types and draw the boundary lines of soil map more efficiently.