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贵州草海不同土地利用方式表层土壤重金属污染现状评估

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赵斌, 朱四喜, 李相兴, 杨东方, 杨秀琴, 曾龙. 贵州草海不同土地利用方式表层土壤重金属污染现状评估[J]. 环境化学, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
引用本文: 赵斌, 朱四喜, 李相兴, 杨东方, 杨秀琴, 曾龙. 贵州草海不同土地利用方式表层土壤重金属污染现状评估[J]. 环境化学, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
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ZHAO Bin, ZHU Sixi, LI Xiangxing, YANG Dongfang, YANG Xiuqin, ZENG Long. Assessment of heavy metal pollution in the surface soils of different land use patterns in Caohai, Guizhou[J]. Environmental Chemistry, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
Citation: ZHAO Bin, ZHU Sixi, LI Xiangxing, YANG Dongfang, YANG Xiuqin, ZENG Long. Assessment of heavy metal pollution in the surface soils of different land use patterns in Caohai, Guizhou[J]. Environmental Chemistry, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
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贵州草海不同土地利用方式表层土壤重金属污染现状评估

  • 1.

    贵州民族大学喀斯特湿地生态研究中心, 贵阳, 550025;

  • 2.

    贵州民族大学生态环境工程学院, 贵阳, 550025

  • 基金项目:

    2015年国家自然科学基金（31560107），2018年贵州省科技支撑计划项目（黔科合支撑[2018]2807）和2017年贵州省研究生科研基金（KYJJ2017006）资助.

Assessment of heavy metal pollution in the surface soils of different land use patterns in Caohai, Guizhou

  • 1.

    Institute of Karst Wetland Ecology, Guizhou Minzu University, Guiyang, 550025, China;

  • 2.

    College of Eco-environment Engineering, Guizhou Minzu University, Guiyang, 550025, China

  • Fund Project: Supported by National Natural Science Foundation of China in 2015 (31560107), Guizhou Provincial Science-technology Support Plan Projects in 2018 (Guizhou Science Support[2018]2807) and Guizhou Provincial Graduate Research Foundation in 2017 (KYJJ2017006).

摘要

  • 摘要: 土壤重金属污染问题日益加剧，而土壤重金属来源解析及污染评价对其污染防治具有重要意义.以贵州草海沼泽地、耕地和林地表层土壤（0-20 cm）为研究对象，采用电感耦合等离子发射光谱仪（ICP-OES）和原子荧光测定仪（AFS）测定土壤中Zn、Cr、Pb、Ni、Cu、As等6种重金属元素含量，并对其进行源解析及污染现状评估.结果表明，草海整体研究区表层土壤元素含量为Zn （144.75 mg·kg-1） > Cr （93.03 mg·kg-1） > Pb （45.33 mg·kg-1） > Ni （45.08 mg·kg-1） > Cu （29.48 mg·kg-1） > As （25.19 mg·kg-1），其中Zn、Pb、Ni、As含量高于贵州背景值，分别高于背景值的45.48%、28.78%、25.97%、15.29%.元素As在耕地和林地，元素Cr、Cu、Pb在沼泽地和林地，以及元素Zn在沼泽地、耕地和林地都具有显著差异（PP>0.05）.3种土地利用方式中，元素Zn、Pb、Ni、As可能主要来源于工业、农业、交通运输等人为源，而Cr、Cu来源于母岩风化、植被凋落物等自然源.土壤重金属污染评价表明，贵州草海不同土地利用方式表层土壤重金属污染处于轻微状态，未造成严重的潜在生态风险.本研究能够为贵州草海土地利用的合理规划、土壤资源保护和重金属污染防治提供数据支持.
    Abstract: It is of great significance to analyze the pollution sources of soil heavy metals for their prevention and controls under the situation of increasing heavy metal pollution in soils. This study focused on the surface soils (0-20 cm) of the marsh lands, cultivated lands and forest lands in Caohai, Guizhou. The concentrations of six heavy metals in soils including Zn, Cr, Pb, Ni, Cu and As, were determined by ICP-OES and AFS. Source analysis and pollution status evaluation of the heavy metals in soils were carried out. The results showed that the average concentrations of Zn, Cr, Pb, Ni, Cu and As in the surface soils, were 144.75, 93.03, 45.33, 45.08, 29.48 and 25.19 mg·kg-1, respectively. Among them, the concentrations of Zn, Pb, Ni and As were significantly higher than the soil background values of Guizhou, which were 45.48%、28.78%、25.97%、15.29%, respectively. The concentrations of As, Cr, Cu, Pb and Zn in the three land use patterns were significantly different (PP>0.05). Zn, Pb, Ni and As in the surface soils mainly derived from human sources such as industry, agriculture, and transportation. However, Cr and Cu came from natural sources such as parent rock weathering and vegetation litter. Based on the evaluation of soil heavy metal pollution, it can be seen that the surface soil heavy metal pollution in different land use patterns was mild and did not cause serious potential ecological risk in Caohai, Guizhou Province. Therefore, this study can provide a data reference for the rational planning of land use, protection of soil resources and the prevention and control of heavy metal pollution in Caohai, Guizhou.
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  • 收稿日期:  2018-04-26
  • 刊出日期:  2018-10-15
赵斌, 朱四喜, 李相兴, 杨东方, 杨秀琴, 曾龙. 贵州草海不同土地利用方式表层土壤重金属污染现状评估[J]. 环境化学, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
引用本文: 赵斌, 朱四喜, 李相兴, 杨东方, 杨秀琴, 曾龙. 贵州草海不同土地利用方式表层土壤重金属污染现状评估[J]. 环境化学, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
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ZHAO Bin, ZHU Sixi, LI Xiangxing, YANG Dongfang, YANG Xiuqin, ZENG Long. Assessment of heavy metal pollution in the surface soils of different land use patterns in Caohai, Guizhou[J]. Environmental Chemistry, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
Citation: ZHAO Bin, ZHU Sixi, LI Xiangxing, YANG Dongfang, YANG Xiuqin, ZENG Long. Assessment of heavy metal pollution in the surface soils of different land use patterns in Caohai, Guizhou[J]. Environmental Chemistry, 2018, 37(10): 2219-2229. doi: 10.7524/j.issn.0254-6108.2018042603
shu

贵州草海不同土地利用方式表层土壤重金属污染现状评估

  • 1.  贵州民族大学喀斯特湿地生态研究中心, 贵阳, 550025;
  • 2.  贵州民族大学生态环境工程学院, 贵阳, 550025
  • 收稿日期:  2018-04-26
基金项目:

2015年国家自然科学基金（31560107），2018年贵州省科技支撑计划项目（黔科合支撑[2018]2807）和2017年贵州省研究生科研基金（KYJJ2017006）资助.

摘要: 土壤重金属污染问题日益加剧，而土壤重金属来源解析及污染评价对其污染防治具有重要意义.以贵州草海沼泽地、耕地和林地表层土壤（0-20 cm）为研究对象，采用电感耦合等离子发射光谱仪（ICP-OES）和原子荧光测定仪（AFS）测定土壤中Zn、Cr、Pb、Ni、Cu、As等6种重金属元素含量，并对其进行源解析及污染现状评估.结果表明，草海整体研究区表层土壤元素含量为Zn （144.75 mg·kg-1） > Cr （93.03 mg·kg-1） > Pb （45.33 mg·kg-1） > Ni （45.08 mg·kg-1） > Cu （29.48 mg·kg-1） > As （25.19 mg·kg-1），其中Zn、Pb、Ni、As含量高于贵州背景值，分别高于背景值的45.48%、28.78%、25.97%、15.29%.元素As在耕地和林地，元素Cr、Cu、Pb在沼泽地和林地，以及元素Zn在沼泽地、耕地和林地都具有显著差异（PP>0.05）.3种土地利用方式中，元素Zn、Pb、Ni、As可能主要来源于工业、农业、交通运输等人为源，而Cr、Cu来源于母岩风化、植被凋落物等自然源.土壤重金属污染评价表明，贵州草海不同土地利用方式表层土壤重金属污染处于轻微状态，未造成严重的潜在生态风险.本研究能够为贵州草海土地利用的合理规划、土壤资源保护和重金属污染防治提供数据支持.

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