摘要
土壤作为城市环境的重要组成部分,不仅提供人类生存所需的各种营养物质,而且接受来自工业和生活废水、固体废物、农药化肥及大气降尘等物质的污染,很容易导致金属元素的蓄积,从而造成土壤重金属的污染.文章讨论了某城市表层土壤重金属污染的空间分布状况,污染传播特征,污染源等;建立了相应的几何与数学模型或算法,得到了较好的结果,为防治城市表层重金属污染,保护和改善土壤资源和生态环境提供有益参考.
As an important part of urban environment, soil not only provides all the nutrients to sustain human survival, but also is the site of pollution of industry, living waste water, solid waste, pesticide and fertilizer, and atmospheric substance dust. Thus metal elements can be easily accumulated, and heavy metal pollution cause in soil can be brought about. This article studies the spatial distribution of heavy metal pollution in the surface soil of a city, and the distribution of regional pollution degree, and also discusses the characteristics of pollution propagation and pollution sources, etc. Establishes the geometry and mathematics model and algorithm, and gets a good result, which provides a reference for to prevent and control heavy metal pollution of urban surface, protect and improve soil resources and ecological environment.
出处
《重庆三峡学院学报》
2012年第3期101-105,共5页
Journal of Chongqing Three Gorges University
基金
重庆三峡学院重点项目(11ZD-19)研究成果之一
关键词
重金属污染
地积累指数模型
单因子指数模型
内梅罗综合污染指数
微分方程模型
Heavy metal pollution
Accumulation Index mode
Single Factor Index model
Nemerow comprehensive pollution index
differential equation model
