城市道路粉尘、土壤及行道树的重金属污染特征

  本文关键词：城市道路粉尘、土壤及行道树的重金属污染特征，由笔耕文化传播整理发布。

城市道路粉尘、土壤及行道树的重金属污染特征

第 41卷第 i期

西南交通大学学报

2∞6年 2月

JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY

Vo1. 41 No.l Feb. 2006

文'能编号: 0258-2724 ( 2∞的Ol'()(削心6

城市道路粉尘、土壤及行道树的蠢金属污染特征 张建强白石清 2渡边泉2 (1.四商交通大学环境科学与工程学院，四川成都 61∞31; 2.日本东京农工大学农学部，日本东京 183幡85(9)摘要:为了撒轻汽车有驶导致的城市道路重金属污染，采用污染指数法分析飞评价东京城市道路粉尘、特道树

表层土壤的童金属污染特征，掌握道路受蠢金属将染的状况，探讨行遭树树叶对重金庸的擒获能力及树种间的 差异.结果表嚼，东京市区道路粉尘的重金属浓攘攘交通量能增如商上升，且与道路土壤相比，道路粉尘始重金

属浓E距离.以 Pb为代表的汽车污混在东京有减轻的趋势，但是仍然较高，说明 Pb将染长期存在;而且，因尾气净化系统中使用叭，从而引坦 Pt持染.行道树树叶的重金属浓度比对照点同树种的浓度高，不同树种浓度差异幢 大，校鹊花蓄积重金庸的能力强 E因此，栽植蓄朝重金属能力强的树种，可以在一定程度上控制麓金属污染的 扩散，

关键询:重金属污染;道路;粉尘;土壤:行道树 I:þ\ll分类号:X132;

X502

文献栋诙码:A

Heavy Metal Pollution of Dust, Topsoil and Roadside Tree Near by Main City Roadways SHIRAlSHI Sayaka l WATANABE lzumil (1. School of Envìronmenta1 Seience and Eng., Southwest Jiaotong University. Chengdu 61∞131, China; 2. culture and T恍如ology Tokyo University. Tokyo 183 -8509萝 Japan)

ZIIANG Jian-qiang l,

Agri-

Abstract: To effectively control heavy metal pollution of city roadways induced by motor窑. the pollution index method was adopted to analyze and evaluate the characteristics of he在，vy me时严如运on of roadway dust and topsoil ncar by roadside tre锢，， and gr现sp the status of heavy metal pollution of city roadways. The capability for the leaves of且 roadside tree to capture heavy metals and the diversity of the capabilities of different trees were discussed.节1e results show that the heavy metal concentration of roadway dust in downtown Tokyo increases with the traff妃. and it is higher in dust than in top崎il. There is the trend, i. e., Pb pollution, rep陀senting car pollution. declines in Tokyo. but its concentration is higher and Pb pollution will exist for a long time. Moreover. pt pollution has been brought about due to the use of Pt in the exhaust-puI远ed system of motor vehicles.白le heavy metal concentralÍon is always higher in the leaves of roadside加es than in those of homologous trees in a contrast spot, and there is a great difference in出e heavy concentration of inhomogeneous trees and

Rhododendron oomura.tak can accumulate more heavy metal. As a result. to plant trees that accumulate more heavy

metals can restraÎn出e di在usion of heavy metal poll四on of city roadways. Key words: heavy mctal poHutÎon; roadway; dust; topsoil; roadside tree

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1被稿臼揭露:2∞4.\0帽，21

a金项鼠:教育背11M学时国人员科研启动必金资助项目 (2∞'2247) f苦餐篱介:张主富强(1 963 - ).勇战役，溥士，博士~导师，研究方向为生态董事槐保护.电话:028-87叙梢眩，也maìl南京哩icn@挠。IDe.时tu.

edu. cn

  本文关键词：城市道路粉尘、土壤及行道树的重金属污染特征，由笔耕文化传播整理发布。