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邢春博. 辽宁兴城松北铅锌矿化区土壤-植物系统中 重金属分布和迁移特征[J]. 科学技术与工程, 2020, 20(1): 406-411.
xingchunbo.Distribution and Migration Characteristics of Heavy Metals in Soil-Plant System in Songbei Lead-zinc Mineralized Area, Xingcheng, Liaoning Province[J].Science Technology and Engineering,2020,20(1):406-411.
辽宁兴城松北铅锌矿化区土壤-植物系统中 重金属分布和迁移特征
Distribution and Migration Characteristics of Heavy Metals in Soil-Plant System in Songbei Lead-zinc Mineralized Area, Xingcheng, Liaoning Province
投稿时间:2019-04-15  修订日期:2019-07-16
DOI:
中文关键词:  重金属污染 根系土 植物 兴城
英文关键词:heavy metal pollution rhizosphere soil plant xingcheng
基金项目:国家自然科学基金青年基金(51603083)和吉林大学优秀青年教师培养计划(419080500564)
  
作者单位
邢春博 College of GeoExploration Sicence and Technology, JilinUniversity,
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中文摘要:
      本文研究了辽宁兴城松北铅锌矿化区玉米和艾草两种植物及其根系土壤系统中Cu、Mn、Pb、Zn和Ni的分布、富集和迁移特征,并采用单因子污染指数法、内梅罗指数法、生物富集和迁移系数法对该地区的重金属污染、富集和迁移情况做出了评价。结果表明,该地区土壤受到了Cu和Zn两种重金属污染。重金属在植物的各个器官中分布不均匀,Cu在两种植物的叶片中富集明显,其他重金属在两种植物各器官中的富集不明显。两种植物对重金属的迁移特征相差较大,玉米中重金属的迁移能力为Cu>Mn>Zn>Pb>Ni,其中Cu的迁移能力最强,达到了2.8,Mn的迁移系数都在1左右,Zn、Pb和Ni的迁移系数均小于1。艾草中各重金属的迁移系数较为接近,均为2左右,其中Pb的迁移能力最强,达到了2.5,最小的Ni迁移系数为1.9,虽然艾草对土壤重金属具有一定的迁移能力,但其对重金属的富集能力相对较弱,与玉米相近,因此推断两种植物对研究区土壤重金属污染无明显改善作用.
英文摘要:
      In this work, We research the distribution, enrichment, and migration of Cu, Mn, Zn, Pb, and Ni in two indigenous plants of corn and wormwood in the Songbei Mining Area, Xingcheng City, Liaoning Province, and use the single-factor pollution index method, Nemerow index method, bioconcentration and transfer factor method to evaluate the heavy metals pollution, enrichment and migration in this area. The results show that the soil in this area is contaminated by Cu and Zn. The heavy metals are unevenly distributed in various organs of plants, Cu is enriched in the leaves of the two plants, and the enrichment of other heavy metals in the organs of the two plants is not obvious. The migration characteristics of heavy metals between the two plants are quite different. The transfer ability of heavy metals in corns is Cu>Mn>Zn>Pb>Ni. Among them, Cu has the strongest transfer factor of 2.8. The transfer factor of Mn is about 1, and the transfer factors of Zn, Pb and Ni are all less than 1. The transfer factors of various heavy metals in wormwood are around 2, among which the transfer factor of Pb is the strongest, reaching 2.5, and the transfer factor of the smallest Ni is 1.9.Although wormwood has a certain ability to transport heavy metals in soil, its ability of absorbing heavy metals is relatively weak, which is similar to that of corn. It indicates that the two plants cannot significantly improve soil heavy metal pollution in the study area.
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