重庆城市快速路中分带土壤Pb污染评价和富集情况分析  

Pollution Evaluation and Enrichment Analysis of Pb in Central Separation Zone Soil of Chongqing Urban Expressway

作　　者：朱本国 杨丽军 胡艳燕 何琴 王丽娟 陈祥 ZHU Ben-guo;YANG Li-jun;HU Yan-yan;HE Qin;WANG Li-juan;CHEN Xiang(Chongqing Landscape and Gardening Research Institute,Chongqing City Garden Greening Engineering Technology Research Center,Chongqing Garden Soil Quality Testing Center,Chongqing 401329,China)

机构地区：[1]重庆市风景园林科学研究院/重庆市城市园林绿化工程技术研究中心/重庆市园林土壤质量检测中心,重庆401329

出　　处：《黑龙江农业科学》2020年第4期44-46,52,共4页Heilongjiang Agricultural Sciences

基　　金：重庆市科研院所绩效激励引导专项(cstc2018jxjlX0002);重庆市集成示范计划项目(cstc2015jcsf20003);重庆市科技计划项目(cstc2011pt-gc80019)。

摘　　要：为促进快速路中分带土壤Pb污染的日常管护和防治,采用地质累积指数和富集指数两种评价方法分析重庆城市快速路中分带绿地土壤Pb的污染程度和富集情况。结果表明:重庆城市快速路中分带绿地土壤Pb含量在31.9~86.0 mg·kg-1,平均值为(50.3±12.7)mg·kg-1;富集指数最小值1.36,最大值3.66,平均值2.14。重庆城市快速路中分带绿地土壤Pb污染程度相对于重庆土壤背景值来说属于轻度污染,但是富集情况达到中度富集的水平;重庆城市快速路中分带绿地土壤可能受到汽车尾气等外界干扰,造成严重的土壤Pb富集,并未造成土壤环境污染,均符合绿化种植土壤标准值Ⅱ级标准。In order to promote the daily management and control of Pb pollution in central separation zone soil of urban expressway,two evaluation methods,geological accumulation index and enrichment index,were used to analyze the pollution degree and enrichment of soil Pb in the greenbelt of Chongqing urban expressway.The results showed that the Pb content of greenbelt in Chongqing urban expressway ranges from 31.9 to 86.0 mg·kg-1,with an average of(50.3±12.7)mg·kg-1.The enrichment index had a minimum of 1.36,a maximum of 3.66,and an average of 2.14.The Pb pollution degree of greenbelt in the urban expressway of Chongqing was mildly polluted compared with the background value of Chongqing soil,but the enrichment level reaches the level of moderate enrichment;the greenbelt soil in the urban expressway of Chongqing may be Due to external disturbances such as automobile exhaust,it caused serious soil Pb enrichment and did not cause soil environmental pollution,which meets the requirements of the Planting soil for greening II standard.

关 键 词：城市快速路 中分带 PB污染 地质累积指数 富集指数 

分 类 号：TU9[建筑科学]