生物学杂志

生物学杂志 ›› 2022, Vol. 39 ›› Issue (5): 72-.doi: 10.3969/j.issn.2095-1736.2022.05.077

• 研究报告 • 上一篇    下一篇

赤才和守宫木对铅锌矿区土壤重金属的富集特征

  

  1. 1. 海南大学 生态与环境学院， 海南 570228; 2. 海南大学 热带作物学院， 海南 570228
  • 出版日期:2022-10-18 发布日期:2022-10-18
  • 通讯作者: 李东海，硕士，高级实验师，研究方向为植物资源、植物生态学，E-mail：dhlye@163.com
  • 作者简介:陈琳，硕士研究生，研究方向为生态修复，E-mail：Clsd0716@163.com
  • 基金资助:
    华南镉铅污染农田一体化修复技术体系集成示范与管理模式构建项目（2018YFD0800706）

Accumlation of heavy metal between Lepisanthes rubiginosa and Sauropus androgynus in lead-zinc mining area #br# #br#

  1. 1. College of Ecology and Environment, Hainan University, Haikou 570228, China;
    2. College of Tropical Crops, Hainan University, Haikou 570228, China
  • Online:2022-10-18 Published:2022-10-18

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摘要： 为研究赤才（Lepisanthes rubiginosa）和守宫木（Sauropus androgynus）两种大生物量木本植物对重金属的富集能力，通过种植的方式，研究赤才和守宫木对海南昌化铅锌矿附近农用地土壤中重金属的富集能力。结果表明：赤才生物量为2.198 t/hm2，守宫木生物量为9.273 t/hm2；赤才叶的Cd、Pb、Cu和Zn含量均高于根和茎；守宫木器官间金属含量差异明显；在相同种植时间下，赤才可以从每公顷土壤中提取Cd 6.64 g、Pb 22.76 g、Cu 12.72 g和Zn 542.23 g，守宫木则可以从每公顷土壤中提取Cd 306.28 g、Pb 92.82 g、Cu 63.02 g和Zn 12795.64 g；守宫木除了茎叶中Pb和Cu的富集系数低于赤才外，其他的富集系数均高于赤才。研究表明赤才与守宫木均可以有效富集这两种重金属，并且将富集的重金属转运到地上部分。

关键词: 赤才, 守宫木, 土壤重金属, 生物富集系数, 生物转运系数

Abstract: In order to study the heavy metal enrichment capacity of two large biomass woody plants, Lepisanthes rubiginosa and Sauropus androgynus, they are planted in Changhua lead-zinc mine. The results showed as follows: the biomass of L. rubiginosa was 2.198 /hm2, and that of S. androgynus was 9.273 t/hm2. The contents of Cd, Pb, Cu and Zn in leaves of L. rubiginosa were higher than those in roots and stems. Under the same planting time, a total of Cd 6.64 g, Pb 22.76 g, Cu 12.72 g and Zn 542.23 g could be extracted from each hectare of soil by L. rubiginosa. S. androgynus could extracte Cd 306.28 g,Pb 92.82 g,Cu 63.02 g and Zn 12795.64 g Zn from each hectare of soil. Except that the enrichment factors of Pb and Cu in the stems and leaves of S. androgynus were lower than that of L. rubiginosa, the other enrichment coefficients were higher than that of L. rubiginosa. They can effectively adsorb these two heavy metals and transfer to their aboveground parts.

Key words: Lepisanthes rubiginosa, Sauropus androgynus, heavy metal of soil, bioconcentration factor, biotranslocation factor

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