Abstract:

Approximately over the past 10 years, China multi-purpose geochemical survey have gained vast amounts of digital resources generated on over millions samples of surfacial  material such as soils, stream sediments, waters, and rocks sampled by 30 provincial geological surveys and agencies. The national multi-purpose geochemical database representing these analyses contains in excess of 2.2 millions pieces of record using a consistent set of methods.These data will compose a complete, national-scale multi-purpose geochemical coverage of China, and will enable construction of geochemical maps, refine estimates of baseline concentrations of chemical elements in the sampled media, and provide a wide prospects for variety of studies on the geological and environmental sciences, land and resource planning, agricultural restructuring and  government's macro decision making.This paper has summarized the structure and content, construction methods, quality controlling measures, the prospects of applications of the national  multi-objective geochemical database,including the main functions of the national multi purpose geochemical information systems.

Key words: China, multipurpose, geochemical survey, database