新疆农业科学 ›› 2019, Vol. 56 ›› Issue (12): 2296-2303.DOI: 10.6048/j.issn.1001-4330.2019.12.016

• 农产品安全·植物保护·畜牧兽医 • 上一篇    下一篇

红皮云杉不同器官对重金属元素Pb、Cd和Cr的累积特征

刘丽, 阿丽亚·拜都热拉, 张纯曦, 胡梦玲   

  1. 新疆农业大学林学与园艺学院,乌鲁木齐 830052
  • 收稿日期:2019-07-25 出版日期:2019-12-20 发布日期:2019-12-27
  • 通信作者: 阿丽亚·拜都热拉(1986-),女,新疆吐鲁番人,讲师,博士后,研究方向为城市生态,(E-mail) 724474218@qq.com
  • 作者简介:刘丽(1994-),女,四川宜宾人,硕士研究生,研究方向为林业生态工程与管理,(E-mail)827164073@qq.com
  • 基金资助:
    国家自然科学基金"乌鲁木齐市快速公路林带对PM2.5等颗粒物的阻滞作用研究"(31770750);中国博士后科学基金(185789);新疆维吾尔自治区自然科学基金(2017D01B15)

Accumulation Characteristics of Heavy Metal Elements Pb, Cd and Cr in Different Organs of Picea koraiensis

LIU Li, Aliya Baidourela, ZHANG Chun-xi, HU Meng-ling   

  1. College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2019-07-25 Online:2019-12-20 Published:2019-12-27
  • Correspondence author: Aliya Baidurela (1986-), female, native place: Turpan, Xinjiang. postdoctoral, lecturer, (E-mail) 724474218@qq.com

摘要: 目的】研究红皮云杉各器官对重金属元素Cr、Pb和Cd的吸收和累积规律,为红皮云杉对重金属元素的累积机制提供理论依据。【方法】以快速路旁(污染点)和学校(对照点)道路两侧的红皮云杉(Picea koraiensis Nakai)为研究对象,运用电感耦合等离子体发射光谱仪测定不同器官(包括树叶、树枝、树皮、树根)中Cr、Pb和Cd的含量,并对污染点红皮云杉各器官中3种重金属元素的累积量和污染指数及二者的分布比例进行分析。【结果】污染点3种重金属元素的累积量和污染指数及二者的分布比例因器官和元素的不同而有明显差异。污染点各器官重金属元素含量均高于对照点且差异显著(P<0.05);各器官重金属元素含量为:Cr>Pb>Cd;不同器官中重金属元素含量存在差异,树皮Pb、Cr含量最高,树根Cd含量最高。重金属元素累积量及其分布比例:树皮Pb累积量最高,树枝(面对快速路)Cd累积量最高,树叶(面对快速路)Cr累积量最高。重金属元素污染指数及其分布比例:树叶(背对快速路)Pb和Cr污染指数最高,树枝(面对快速路)Cd污染指数最高。【结论】红皮云杉各器官对重金属元素Pb、Cd和Cr都具有一定的累积作用,树皮和树叶的吸滞能力明显高于其他器官。

关键词: 红皮云杉; 器官; 重金属元素; 污染指数; 分布比例

Abstract: Objective】 To explore the absorption and accumulation law of heavy metal elements Cr, Pb and Cd in various organs of Picea koraiensis in the hope of providing a theoretical basis for further study on the accumulation mechanism of heavy metal elements in Picea koraiensis. 【Method】The contents of Cr, Pb and Cd in different organs (including leaves, branches, bark and roots) of Picea koraiensis near expressway (pollution point) and school road (control point) were determined by Inductively Coupled Plasma Optical Emission Spectrometer. The accumulation and pollution index of three heavy metals in organs of Picea koraiensis and their distribution ratio were also analyzed. 【Result】The cumulative amount and pollution index and their distribution ratio of three heavy metals in pollution point varied significantly with organs and elements. In general, the contents of heavy metal elements in the organs of the pollution point were higher than those of the control points and the difference was significant (P<0.05);The content of heavy metal elements in each organ was: Cr>Pb>Cd; There were differences in the contents of heavy metals in different organs, Pb and Cr were the highest in the bark, and Cd was the highest in the roots. The accumulation of heavy metal elements and their distribution ratio: Pb was the highest in the bark, Cd was the highest in the branches (facing the expressway), and Cr was the highest in the leaves (facing the expressway). Heavy metal pollution index and its distribution ratio: Pb and Cr were highest in leaves (back to expressway), and Cd was highest in branches (facing expressway).【Conclusion】 The results showed that all organs of Picea koraiensis had a certain ability to absorb heavy metals, and the ability of bark and leaf to absorb heavy metals was obviously higher than other organs.

Key words: Picea koraiensis; organs; heavy metal elements; pollution index; distribution ratio

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

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