威海市土壤元素地球化学分布及其意义

在威海市开展了多目标区域地球化学调查,获取了表层土壤和深层土壤地球化学数据,通过对地球化学参数进行统计分析,确定了威海市土壤地球化学基准值和背景值,对比区内土壤地球化学基准值与背景值变化,认为区内大部分元素或指标在表层土壤中的含量继承了土壤母质,后期人类活动对其影响较小,但C,Cd,Hg,N,P,Corg等元素或指标在表层土壤中已明显富集,表明表生作用和人类活动等因素已对这些元素或指标的含量变化与分布分配产生明显影响。该成果将为地方政府进行农业区划、环境保护和国土资源管理提供了基础地球化学资料和科学依据。

Geochmical Distribution of Soil Elements in Weihai City and Its Significance

The multi-target regional geochemical survey has been carried out in Weihai city, and geochemical data of the surface soil and deep soil has been basically obtained. Based on the analysis of geochemical parameters, geochemical base value and background value of the soil geochemical parameters have been determined. Comparing with the variation of soil geochemical base value and background value, it is regarded that most of the elements in this area come from the soil, and human activities have little effect on it. But,C,Cd,Hg,N,P,Corg and other elements have been clearly enriched in the surface soil. It is indicated that the factors,such as hypergene process and human activity have significant influence on the content change and distribution of these elements.