天津蓟州平原区典型剖面硒元素土壤地球化学特征及其影响因素  

Soil geochemical characteristics and influencing factor of selenium element on typical profile in the plain area,Jizhou Districtof Tianjin

作　　者：李硕 李炜 王卫星[1] 李攻科[1] 韩荣文[1] LI Shuo;LI Wei;WANG Weixing;LI Gongke;HAN Rongwen(Tianjin Institute of Geological Survey,Tianjin 300191,China;Tianjin Eco-Environment Monitoring Center,Tianjin 300191,China)

机构地区：[1]天津市地质调查研究院,天津300191 [2]天津市生态环境监测中心,天津300191

出　　处：《矿产与地质》2023年第1期157-162,共6页Mineral Resources and Geology

摘　　要：通过采集不同沉积环境区域典型剖面土壤样品,对天津市蓟州区西南平原不同沉积环境土壤剖面中硒(Se)含量特征及其影响因素开展研究。结果表明,研究区各沉积环境典型剖面土壤Se含量均表现为表层富集的现象,冲积-湖沼相剖面土壤Se含量整体小于其他沉积环境土壤剖面,各沉积环境剖面土壤Se含量均未达到天然富Se土地标准;湖沼相沉积环境剖面土壤Se含量与有机质、Mn含量呈现显著正相关性,与pH值呈现显著负相关性,与Fe_(2)O_(3)含量呈现一定正相关性;冲积-湖沼相沉积环境剖面土壤Se含量与有机质呈现显著正相关性,与Mn含量、pH值呈现比较显著负相关性;冲积相沉积环境剖面土壤Se含量与有机质呈现比较显著正相关性;冲洪积相沉积环境剖面土壤Se含量与有机质有一定的正相关性,与Mn含量呈现比较显著负相关性。The article has studied the characteristics of selenium content and its influencing factor on typical soil profiles at the different sedimentary environment areas in Jizhou plain of Tianjin City.The study result showsthat Se content in the soil profiles of all the sedimentary environments in the study area is enriched in the surface layer,and Se content in the alluvial&limnetic face soil profile is lower than that in the other sedimentary environments,and Se content in the soil profiles of all sedimentary environments does not reach the standard of natural Se-rich land.There is a significant positive correlation between Se content and organic matter,Mn content,and a significant negative correlation between Se content and pH value of soil,and a posi-tive correlation between Se and Fe_(2)O_(3)contentof soil on the soil profile of lacustrine and biogas sedimentary environment.There is a significant positive correlation between Se content and organic matter,and a significant negative correlation between Se and Mn content,pH value in the alluvial&limnological sedimentary environment.There is a significant positive correlation between Se content and organic matter of soil.There is a positive correlation between Se content and organic matter,but there is a negative correlation between Se and Mn content.

关 键 词：土壤剖面 硒含量 影响因素 天津蓟州区 

分 类 号：P595[天文地球—地球化学] S159.2[天文地球—地质学]