城乡道路两侧重金属污染特征研究进展(终稿)

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城乡道路两侧重金属污染特征研究进展(终稿) (1)摘要····································································Ⅰ
1 绪论··································································1
1.1 道路两侧土壤重金属污染··············································1
1.1.1 城市道路两侧土壤重金属污染国内外研究进展······················1
1.2城市街道灰尘重金属污染···············································2
1.2.1 城市街道灰尘”的定义········································2
1.2.2城市街道灰尘重金属污染国内外研究进展···························3
1.3城市道路两侧土壤和灰尘中重金属污染的危害和影响·······················4
1.3.1重金属污染对人体的危害·········································4
1.3.2重金属污染对植物的危害·········································4
1.4研究内容及技术路线···················································5
1.4.1研究意义·······················································5
1.4.2技术路线·······················································5
2 研究方法······························································6
2.1 重金属污染评价方法··················································6
2.1.1 Muller地积累指数法············································6
2.1.2 潜在生态危害指数法············································6
2.2城市不同功能区地表灰尘重金属分布差异·································7
2.3不同功能区地表灰尘重金属来源及影响因素分析···························7
3 结论与展望····························································8
3.1结论·································································8
3.2展望·································································8
参考文献································································9

1绪论
1.1道路两侧土壤重金属污染
21世纪以来，城市化进程加快，城市化进程促进了工业化，增强了人类改造自然的能力，提高了对物质和能量的利用效率，节约了空间和时间，给人类带来了巨大的效益。但又带来住房困难、交通拥挤、环境污染、影响