中国多目标区域地球化学调查数据库建设及应用展望

China National Multi-purpose Geochemical Database Development and Application Prospect

近10年我国多目标区域地球化学调查取得的系列成果是我国基础地学数据库系列中重要的地球化学数据资源。以全国30个省(区、市)1∶25万多目标区域地球化学调查所获取数据,按照统一建库标准,首次汇总建成的全国多目标区域地球化学调查数据库,准确、全面地反映了我国生态环境信息,在地球化学编图、元素分布特征研究、地质环境研究、土地利用规划、农业结构调整、政府宏观决策等领域具有广阔的应用前景。系统地总结了全国多目标区域地球化学调查数据库结构与内容、建设方法、质量控制措施、全国多目标区域地球化学信息系统的主要功能及数据库成果的应用前景。

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.