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现代地质 ›› 2019, Vol. 33 ›› Issue (01): 161-168.DOI: 10.19657/j.geoscience.1000-8527.2019.01.15

• 地球化学 • 上一篇    下一篇

广东省普宁市土壤硒的分布特征及影响因素研究

蒋慧豪1,2(), 罗杰1, 蔡立梅1,2,3(), 穆桂珍1,2, 唐翠华1, 王秋爽1, 王硕1, 孙蓉蓉1   

  1. 1.长江大学 资源与环境学院, 湖北 武汉 430100
    2.中国科学院 广州地球化学研究所矿物学与成矿学重点实验室, 广东 广州 510640
    3.中国科学院 广州地球化学研究所有机地球化学国家重点实验室, 广东 广州 510640
  • 收稿日期:2018-04-18 修回日期:2018-09-24 出版日期:2019-02-26 发布日期:2019-02-28
  • 通讯作者: 蔡立梅
  • 作者简介:蔡立梅,男,副教授,1980年出生,地球化学专业,主要从事环境地球化学研究。Email:clmktz88@yangtzeu.edu.cn
    蒋慧豪,男,硕士研究生,1994年出生,地质工程专业,主要从事环境地球化学研究。Email:jianghuihao324@163.com
  • 基金资助:
    国家自然科学基金项目(41203061);湖北省自然科学基金项目(2015CFB603);湖北省教育厅科学技术研究重点项目(D20161301);中国科学院广州地球化学研究所有机地球化学国家重点实验室开放基金项目(OGL-201408);长江大学大学生创新创业训练项目(2015007);长江大学大学生创新创业训练项目(2016006)

Distribution of Selenium and Its Influencing Factors in Soils of Puning City, Guangdong Province

JIANG Huihao1,2(), LUO Jie1, CAI Limei1,2,3(), MU Guizhen1,2, TANG Cuihua1, WANG Qiushuang1, WANG Shuo1, SUN Rongrong1   

  1. 1. College of Resources and Environment, Yangtze University, Wuhan,Hubei 430100, China
    2. Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou,Guangdong 510640, China
    3. State Key Laboratory of Organic Geochemistry, Chinese Academy of Sciences, Guangzhou,Guangdong 510640, China
  • Received:2018-04-18 Revised:2018-09-24 Online:2019-02-26 Published:2019-02-28
  • Contact: CAI Limei

摘要:

开展了广东省普宁市区域土壤硒调查研究,采集了413个表层土壤样品(0~20 cm)和103个深层土壤样品(>150 cm),测定了土壤全硒含量,据此研究土壤硒分布特征及其影响因素。结果表明,普宁市土壤全硒含量变化于0.16~2.01 mg/kg,平均值为0.63 mg/kg,总体上处于中硒及高硒水平,不存在缺硒和硒过剩土壤。砂页岩风化形成的赤红壤全硒含量较高,平均值达0.86 mg/kg,以侏罗系页岩母质发育的土壤全硒含量最高,平均值达0.89 mg/kg;三角洲第四系沉积物发育形成的水稻土全硒含量最低,平均值为0.41 mg/kg。回归分析表明,土壤全硒含量与铁铝含量、有机碳含量具有极显著正相关,与pH呈极显著负相关。影响普宁市土壤硒含量的主要因素是成土母质,土壤pH、有机碳和铁铝含量及土地利用方式对土壤全硒含量分布与富集也有一定的影响。

关键词: 普宁市, 土壤全硒, 分布特征, 影响因素

Abstract:

A systematic investigation of soil selenium in the region of Puning City was carried out, and 413 samples of surface soil (0-20 cm) and 103 samples of deep soil (>150 cm) were collected systematically and analyzed for content, distribution and influencing factors of soil Se. Results showed that the content of total selenium in the surface soils ranged from 0.16 mg/kg to 2.01 mg/kg with a mean value of 0.63 mg/kg, which meant that the soils were in the category of Se sufficiency or Se abundance on the whole, with none in the category of Se deficiency or excessive Se. Among the different types of soils, total Se content was the highest in red soil formed by sand shale, averaging 0.86 mg/kg,and the lowest in paddy soils developed in delta sediments, averaging 0.41 mg/kg. Among the different types of parent materials, the highest content was recorded in Jurassic shale with an average Se content of 0.89 mg/kg, while the lowest in Quaternary sediment with an average of 0.41 mg/kg. Correlation and regression analysis showed that soil Se content was significantly and positively related to contents of iron and aluminum, soil total organic carbon (SOC), but negatively to soil pH. Soil parent material was the major factor influencing selenium concentration and distribution in the soil of Puning City, whereas land use, soil pH, SOC, iron and aluminum also played important roles.

Key words: Puning City, soil total selenium, distribution characteristic, influencing factor

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