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现代地质 ›› 2020, Vol. 34 ›› Issue (03): 609-617.DOI: 10.19657/j.geoscience.1000-8527.2020.03.17

• 地球化学 • 上一篇    下一篇

云南省新平县哀牢山地区富硒土壤成因及其影响因素研究

黄钊1,2(), 陈政1, 薛传东2, 刀艳1(), 许胜超1, 代达龙1, 吴松1   

  1. 1.云南省地质调查院,云南 昆明 650216
    2.昆明理工大学 国土资源工程学院,云南 昆明 650093
  • 收稿日期:2019-10-25 修回日期:2020-04-30 出版日期:2020-07-04 发布日期:2020-07-05
  • 通讯作者: 刀艳
  • 作者简介:刀艳,女,博士,1988年出生,地球化学专业,主要从事岩石地球化学研究。Email: daoyan_1120@126.com
    黄 钊,男,高级工程师,硕士研究生,1983年出生,地质工程专业,主要从事地球化学、地球物理勘查及土地质量地球化学调查工作。Email: 151230199@qq.com
  • 基金资助:
    云南省自然资源厅地质勘查基金项目“云南省新平县者竜—嘎洒地区1∶5万土地质量地球化学调查评价”(D201710)

Study on the Genesis and Influencing Factors of Selenium-enriched Soil in the Ailaoshan Area, Xinping County, Yunnan Province

HUANG Zhao1,2(), CHEN Zheng1, XUE Chuandong2, DAO Yan1(), XU Shengchao1, DAI Dalong1, WU Song1   

  1. 1. Yunnan Institute of Geological Survey, Kunming,Yunnan 650216,China
    2. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming,Yunnan 650093,China
  • Received:2019-10-25 Revised:2020-04-30 Online:2020-07-04 Published:2020-07-05
  • Contact: DAO Yan

摘要:

以云南省新平县者竜—戛洒地区1∶5万土地质量地球化学调查评价结果为基础,对该地区富硒土壤的成因及其影响因素进行分析,结果表明,研究区土壤硒平均含量为0.38 mg/kg,高于全国土壤硒平均含量0.29 mg/kg,按0.4 mg/kg<Se≤3 mg/kg将研究区土壤硒进行划分,富硒土壤面积占研究区总面积的26.74%。岩石中硒的“初始含量”和后期土壤中硒的次生富集是研究区硒的主要来源,次生富集作用是造成研究区富硒土壤广泛分布的主因。区内土壤硒含量明显受成土母质、土壤类型、土地利用方式、海拔高程、酸碱度(pH值)和土壤有机质的影响。

关键词: 哀牢山地区, 富硒土壤, 成因, 影响因素

Abstract:

Based on the evaluation results for 1∶50,000 land quality geochemical survey in Zhelong-Jiasa area of Yunnan Province, we analyze the origin of selenium-rich soil and its influencing factors.The results showed that the average of selenium in soil was 0.38 mg/kg, which was higher than national soil selenium average concentration (0.29 mg/kg).In addition, the area of the delineated selenium-enriched land accounted for 26.74% on the basis of division principle for 0.4 mg/kg<Se≤3 mg/kg.The selenium in the study area is mainly derived from the primary content of selenium in rocks and the secondary enrichment of selenium in soil, and the latter as the main reason for the widespread distribution of selenium-rich soil.Selenium content in soil is obviously affected by soil parent material, soil type, land use pattern, topography, pH value and soil organic matter.

Key words: the Ailaoshan area, selenium-enriched soil, genesis, influencing factor

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