走向21世纪的地球化学填图

GEOCHEMICAL MAPPING FOR 21ST CENTURY

通过分析国外区域地球化学填图计划，指出现代区域地球化学填图具有多目标的特征，强调测定多元素总量和有效态含量；论证了超低密度地球化学填图技术．最后，针对国土资源地质大调查，提出了裸露区、半裸露区、平原区和覆盖区的地球化学填图的内容与方法。

All the modern geochemical mapping projects in the world are characterized by mutiply purposes with their emphasis on the determination of total and effective contents of elements. The ultra_low density sampling theory is presented in this paper. In addition, the objects and methods for the geochemical mapping in the exposed area, semi_exposed area, alluvial plain and covered area are also presented in this paper for the large geological survey of national land resources. It is expected that these methods may have a positive impact on the growth of the geochemical mapping in China.