摘要
Multiple-purpose regional geochemical investigation is a basic and public welfare investigation and evaluation of foundational geology,resource potential and ecological environment in Quaternary covered area,the results can be served for resource,agriculture,ecology,urban planning and other areas. In this paper,the historical background,working method and the finished results are introduced,the evaluation method and idea for soil ecological geochemical evaluation are carried out and these evaluation results will afford sufficient accordance for land resource macroscopic classification of Guiyang.