路域土壤重金属空间分布特征及其影响研究
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摘要
为研究路域土壤重金属的空间分布特征,以镇江市润州区龙门港路(透水沥青路面)与港前路(密实沥青路面)作为研究对象,探究土壤中重金属Pb、Zn的空间分布特征。通过分析路面径流雨水中Pb、Zn污染物含量,得出路面径流对土壤中重金属Pb、Zn含量的影响,并采集了80个土壤样品进行测试,利用单因子污染指数法、综合污染指数法进行了土壤重金属污染评价。结果表明:路面径流污染是导致土壤重金属含量较高的重要因素;城市道路重金属污染非常严重;透水沥青路面对重金属污染物具有一定的截留作用,减少了重金属进入土壤深处。
In order to study the spatial distribution characteristics of heavy metals in soil, the spatial distribution characteristics of heavy metals Pb and Zn in soil were studied by taking Longmen Port Road(pervious asphalt pavement) and Gangqian Road(dense asphalt pavement) in Runzhou District of Zhenjiang City as research objects. By analyzing the content of Pb and Zn pollutants in pavement runoff and rainwater, the influence of pavement runoff on the content of heavy metals Pb and Zn in soil was obtained. 80 soil samples were collected for testing. The pollution of heavy metals in soil was evaluated by single factor pollution index method and comprehensive pollution index method. The results show that the runoff pollution of pavement is an important factor leading to the high content of heavy metals in soil; heavy metal pollution in urban roads is very serious; permeable asphalt pavement has a certain retention effect on heavy metal pollutants, reducing heavy metals into the soil.
In order to study the spatial distribution characteristics of heavy metals in soil, the spatial distribution characteristics of heavy metals Pb and Zn in soil were studied by taking Longmen Port Road(pervious asphalt pavement) and Gangqian Road(dense asphalt pavement) in Runzhou District of Zhenjiang City as research objects. By analyzing the content of Pb and Zn pollutants in pavement runoff and rainwater, the influence of pavement runoff on the content of heavy metals Pb and Zn in soil was obtained. 80 soil samples were collected for testing. The pollution of heavy metals in soil was evaluated by single factor pollution index method and comprehensive pollution index method. The results show that the runoff pollution of pavement is an important factor leading to the high content of heavy metals in soil; heavy metal pollution in urban roads is very serious; permeable asphalt pavement has a certain retention effect on heavy metal pollutants, reducing heavy metals into the soil.
引文
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[3]黄明煜,章家恩,全国明,等.土壤重金属的超富集植物研发利用现状及应用入侵植物修复的前景综述[J].生态科学,2018,37(03):194-203.
[4]卓文珊,唐建峰,管东生.广州市城区土壤重金属空间分布特征及其污染评价[J].中山大学学报(自然科学版),2009,48(4):47-51.
[5]林啸,刘敏,侯立军,等.上海城市土壤和地表灰尘重金属污染现状及评价[J].中国环境科学,2007,27(5):613-618.
[6]刘玉燕,刘敏,刘浩峰.乌鲁木齐城市土壤中重金属含量与影响机制探讨[J].干旱区地理,2007,30(4):552-556.
[7]卢瑛,龚子同,张甘霖,等.南京城市土壤重金属含量及其影响因素[J].应用生态学报,2004,15(1):123-126.
[8]Altan M,Ayyildiz,Maikop S,et al.Heavy metal distribution map in soil by using GIS techniques[J].Journal of Environmental Science and Engineering-China,2011,5(1):15-20.
[9]Lv J,Liu Y,Zhang Z,et al.Identifying the origins and spatial distributions of heavy metals in soils of Ju country(Eastern China)using multivariate and geostatistical approach[J].Journal of Soils&Sediments,2015,15(1):163-178.
[10]Segura R,Arancibia V,Zú觡iga M C,et al.Distribution of copper,zinc,lead and cadmium concentrations in stream sediments from the Mapocho River in Santiago,Chile[J].Journal of Geochemical Exploration,2006,91(1):71-80.
[11]全国土壤污染状况调查公报[J].中国环保产业,2014(05):10-11.