四川农业大学学报 ›› 2016, Vol. 34 ›› Issue (03): 336-341,380.doi: 10.16036/j.issn.1000-2650.2016.03.013

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贵阳郊区菜地土壤重金属Zn、Cd、Pb、Cu污染及潜在生态危害评价

颜蒙蒙, 王济, 胡丰青, 肖建勇, 蔡雄飞, 苏琪娇   

  1. 贵州师范大学地理与环境科学学院, 贵阳 550025
  • 收稿日期:2016-03-18 出版日期:2016-09-30 发布日期:2017-02-15
  • 通讯作者: 胡丰青,讲师,硕士研究生,研究方向:土壤重金属污染修复,E-mail:313025538@qq.com。 E-mail:313025538@qq.com
  • 作者简介:颜蒙蒙,硕士研究生。
  • 基金资助:
    国家"十二五"科技支撑计划项目(2012BAD14B02-6);贵州省科学技术基金重点项目(黔科合JZ字[2014]2012号)

Pollution and Potential Ecological Hazard of Heavy Metals Zn, Cd, Pb, Cu in the Vegetable Soils of Guiyang Suburb

YAN Meng-meng, WANG Ji, HU Feng-qing, XIAO Jian-yong, CAI Xiong-fei, SU Qi-jiao   

  1. School of Geographic and Environmental Sciences, Guizhou Normal University, Guiyang 550025, China
  • Received:2016-03-18 Online:2016-09-30 Published:2017-02-15

摘要: [目的] 探明贵阳郊区菜地土壤重金属污染状况及其潜在的生态危害。[方法] 选取贵阳市花溪区为研究区域,采集研究区域土壤样本50个,运用潜在生态危害指数法对土壤中测定的Zn、Cd、Pb、Cu等元素含量进行污染及潜在生态危害评价。[结果] 结果表明:①贵阳郊区菜地土壤重金属污染程度大部分属于清洁Ⅰ和低污染Ⅱ,基本上不会通过蔬菜等食物链影响人体健康;从区域看,黔陶乡污染程度最低,而燕楼乡的污染程度相对最高;从单一元素看,Pb污染程度最低,而Zn污染程度相对最高。②贵阳郊区菜地土壤重金属潜在生态危害指数(Eri/RI)处于相对安全范围内,大部分处于轻微生态危害Ⅰ;从单个元素的潜在生态危害指数(Eri)值看,Cd的潜在危害指数最大;从综合潜在生态危害指数(RI)值看,4个乡镇的综合潜在生态危害指数(RI)值都小于150,处于轻微生态危害Ⅰ,基本不会影响当地生态环境。[结论] 贵阳郊区菜地土壤重金属Zn、Cd、Pb、Cu污染程度相对较低,潜在生态危害处于可控范围内,基本不会对当地的蔬菜种植和生态环境产生影响。

关键词: 菜地土壤, 重金属污染, 生态危害评价, 贵阳

Abstract: [Objective] The aim of the study was to explore the harm of heavy metal pollution and ecological potential in the vegetable soils of Guiyang suburb. [Method] Huaxi district of Guiyang city was selected as the research area. 50 soil samples were collected in the area, then Zn, Cd, Pb, Cu and other elements in soils were determined by potential ecological hazard index method and potential ecological risk assessment. [Results] ① The heavy metal pollution degree of most soils were cleaning Ⅰ and pollution Ⅱ in the vegetable soils of Guiyang suburb. It basically did not affect human health through the food chain, such as vegetables. From a regional perspective, the lowest pollution degree was Qiantao village but relatively high degree of pollution was Yanlou village. From a single element, Pb pollution degree was the lowest while Zn pollution degree was the highest. ② There were relatively safe of soil heavy metal potential ecological risk index(Eri/RI) in the vegetable soils of Guiyang suburb, mostly in the minor ecological harm I; From the potential ecological hazard index(Eri) value of single element, maximum potential hazard index was Cd. From the comprehensive potential ecological hazard index(RI) value, the comprehensive potential ecological risk index(RI) of the four towns were all less than 150. In the slight ecological harm I, the basic will not affect the local ecological environment. [Conclusion] Soil heavy metals Zn, Cd, Pb and Cu pollution level is relatively low in the vegetable soils of Guiyang suburb. The potential ecological hazards was in the controllable range and they will not affect the local vegetable planting and ecological environment.

Key words: soil, heavy metal pollution, ecological risk assessment, Guiyang

中图分类号: 

  • X53