摘要
通过开展岑溪市土地质量地球化学评价调查,发现广西岑溪市存在大面积的富硒土壤,土壤硒平均含量值为0.55mg/kg,高于世界和全国土壤含量的平均值。研究区表层土壤中硒元素在水平空间分布上呈面状、片状分布特征。通过不同的成土母质、土壤类型、土地利用类型及土壤的理化性质对土壤中硒的成因及物质来源进行分析,结果表明硒与土壤中Mo呈强相关,而与Cu、TFe2O3、Cr、Ni、As呈中等相关,其他元素呈负相关性;表层土壤富硒的原因主要受控于成土母质、土壤类型、土地利用类型以及土壤物理化学性质。
Through the geochemical evaluation investigation of land quality in Cenxi City,it is found that there is a large area of selenium-rich soil in Cenxi City,Guangxi.The average content of selenium in the soil is 0.55mg/kg,which is higher than those in the world and the whole country.The distribution characteristics of Se element in the surface soil show as a face or schistose shape within the horizontal space in the study area.The origin and material source of selenium in soil are analyzed by the different parent material,soil type,land use type and its physical and chemical properties.The result shows that selenium is strongly correlated with Mo in soil,moderately correlated with Cu,TFe2O3,Cr,Ni,As,and negatively correlated with the other elements.The selenium enrichment in surface soil is mainly controlled by the soil parent material,soil type,land use type and its physical and chemical properties.
作者
刘华应
黄永聪
蒋宗林
唐列文
LIU Huaying;HUANG Yongcong;JIANG Zonglin;TANG Liewen(The First Geological Team of Guangxi,Guilin 541100,Guangxi,China;Guangxi Institute of Regional Geological Survey,Guilin 541003,Guangxi,China)
出处
《矿产与地质》
2020年第2期347-354,共8页
Mineral Resources and Geology
基金
广西自然资源厅项目“广西岑溪市土地质量地球化学评价项目”(桂国土资函〔2017〕1915号、桂地矿农〔2017〕15号)资助。
关键词
富硒土壤
地球化学特征
成因分析
岑溪市
selenium-rich soil
geochemical characteristics
genesis analysis
Cenxi City
