城市表层土壤重金属污染扩散研究

摘要

With the rapid economic development and booming of population,the influence of human activities on urban environment is becoming increasingly prominent.People paid much more attentions to the issues of investigations into abnormalities of urban soil environment and environmental quality assessment based on these investigations so as to decide the evolution modes of urban soil environment.Taking the pollution data of eight heavy metals as example,this paper provides theory and methodology support to the construction of heavy metal pollution diffusion mode via investigations on spatial distribution of heavy metal,pollution degree evaluation,diffusion characteristics pollution mechanism and pollution source tracking,among others.%随着城市经济的快速发展和城市人口的不断增加,人类活动对城市环境质量的影响日显突出。对城市土壤地质环境异常的查证,以及如何应用查证获得的海量数据资料开展城市环境质量评价,研究人类活动影响下城市地质环境的演变模式,日益成为人们关注的焦点。本文以某城市城区土壤地质环境调查获得的8种主要重金属污染物数据为例,通过建立重金属污染扩散数理模型,开展重金属空间分布、污染程度评价、传播特征研究,剖析重金属污染机理,追踪污染源,为城市土壤地质环境保护提供理论和方法依据。