ИСТИНА

The main issue in harmonization of heterogeneous soil information involved in data exchange is the choice of standard. Modern standards – analogues of ISO28258 represent the hierarchical system of standards at various levels in their hronological sequence. The standard is considered as unity of a) conceptual model (involves project organization in soil data creation, storage, transformation and transferring from process to process in a distributed heterogeneous structure of soil data centers), b) hierarchical object model. By systematization of governmental, ministerial standards and registries, comparison with the FAO list of objects and analysis of geographic primitives and attribute data used in practice the list-classifier of objects created. Objects were grouped according to homogeneous spatial and attribute information, scale and soil combinations presence. The list represents the Cartesian product of the set of spatial objects (contour, profile, polygon, unit and combined test, grid) and multiple attribute sets (full soil description, disaggregated soil map legend, specialized shortened sets of soil parameters, grid parameters), and c) structural-information model, or description of the implementation of the conceptual and object models. The standard is considered as a unity of conceptual, object and process models. Current status in standardization is described with examples for each aspect.