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现代地质 ›› 2022, Vol. 36 ›› Issue (03): 933-940.DOI: 10.19657/j.geoscience.1000-8527.2022.03.13

• 地球化学 • 上一篇    下一篇

山东省青州市表层土壤硒元素地球化学特征

刘阳1,2(), 姜冰1,2, 张海瑞1,2, 孙增兵1,2, 王松涛1,2   

  1. 1.山东省地质矿产勘查开发局 第四地质大队,山东 潍坊 261021
    2.山东省地矿局 海岸带地质环境保护重点实验室,山东 潍坊 261021
  • 收稿日期:2020-12-14 修回日期:2022-03-09 出版日期:2022-06-10 发布日期:2022-07-19
  • 作者简介:刘阳,男,工程师,1989年出生,矿物学、岩石学、矿床学专业,主要从事勘查地球化学和环境地球化学研究工作。Email: 814560293@qq.com
  • 基金资助:
    山东省地质矿产勘查开发局地质勘查和科技创新项目(KC201903);山东省地质矿产勘查开发局地质勘查和科技创新项目(202005);山东省地质矿产勘查开发局地质勘查和科技创新项目(KJ2010)

Geochemical Characteristics of Selenium in Surface Soil of Qingzhou, Shandong

LIU Yang1,2(), JIANG Bing1,2, ZHANG Hairui1,2, SUN Zengbing1,2, WANG Songtao1,2   

  1. 1. The Fourth Geological Brigade of Shandong Bureau of Geology and Mineral Resources Exploration and Development, Weifang, Shandong 261021, China
    2. Key Laboratory of Coastal Zone Geological Environment Protection, Shandong Geology and Mineral Exploration and Development Bureau, Weifang, Shandong 261021, China
  • Received:2020-12-14 Revised:2022-03-09 Online:2022-06-10 Published:2022-07-19

摘要:

为研究山东省青州市表层土壤硒元素地球化学特征,在青州市按照平均5.2件/km2的密度采集了8 132件表层土壤样品,分析了硒、有机质、pH等指标。结果表明:青州市表层土壤硒含量范围在0.02~2.77 mg/kg,背景值为0.21 mg/kg(n=7 462)。研究区富硒土壤面积为140.56 km2,占研究区总面积的9.00%;足硒土壤面积为1 248.39 km2,占研究区总面积的79.93%;潜在硒不足土壤面积为148.45 km2,占研究区总面积的9.50%;硒缺乏土壤面积为24.52 km2,占研究区总面积的1.57%。不同的成土母质、土壤类型、地貌类型、土地利用类型区的表层土壤硒含量特征不同,寒武纪—奥陶纪地层成土母质区、钙质粗骨土分布区、溶蚀—切割中山地貌类型区、草地和林地土地利用类型区的表层土壤中硒相对富集。相关分析表明,研究区表层土壤中pH和硒含量无相关性,而有机质与硒含量呈显著正相关关系。

关键词: 地球化学特征, 硒元素, 富硒土壤, 背景值, 青州市

Abstract:

In order to study the geochemical characteristics of selenium in surface soil of Qingzhou in Shandong Province, 8,132 surface soil samples were collected with the average density of 5.2 pieces/km2 in Qingzhou and the selenium content, organic matter, pH and other indicators were analyzed. The results showed that the selenium content in surface soil ranged from 0.02 to 2.77 mg/kg and the background value was 0.21 mg/kg (n=7,462). The area of selenium-abundant soil in the study area is 140.56 km2, accounting for 9.00% of the study area. The area of selenium-sufficient soil is 1,248.39 km2, accounting for 79.93% of the study area; the area of potential selenium-deficiency soil is 148.45 km2, accounting for 9.50% of the study area; the area of selenium-deficient soil is 24.52 km2, accounting for 1.57% of the study area. Selenium in surface soil has different characteristics in different geological units, soil types, landform types and land-use types. Selenium is relatively accumulated in the surface soil with Cambrian-Ordovician parent material, clay soil type, dissolution or moderate-cutting landform type, grassland and woodland land-use type. Correlation analysis showed that there was no correlation between pH and selenium content in surface soil of the study area, but there was a significant positive correlation between organic matter and selenium content.

Key words: geochemical characteristics, selenium, selenium-abundant soil, background value, Qingzhou

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