AS an element of the National Cooperative Soil Survey, the Soil Conservation Service has established soil geographic data bases to improve the storage, manipulation, and retrieval of soil map information. People involved in agriculture, agribusiness, forestry, environmental protection, and land use planning and management often have difficulty locating and interpreting soil data. Frequently, these data are not in a form that permits easy analysis, particularly if the data must be analyzed together with other resource information. Soil and other natural resource data are unique in that spatial distribution and variability on the landscape are important components. Soil data often must be integrated with other spatial data. SCS has established three soil geographic data bases representing different scales of soil mapping. Each data base links digitized soil map unit delineations with computerized data for each map unit, giving the proportionate extent of the component soils and their properties. With these computerized data bases, users will be able to store, retrieve, analyze, and display soil data efficiently. They will also be able to integrate the data with other spatially referenced resource and demographic data in geographic information systems. The three data bases The three soil geographic data bases include the Soil Survey …
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Reybold et al. (1989) studied this question.