摘要
为了研究城市表层土壤重金属污染分布情况及其演变模式,本研究首先利用克里格插值模型,得到了8种重金属污染物浓度的空间分布,进而建立基于内梅罗综合污染指数的评价模型,得出该城区不同区域的重金属污染程度.然后,建立了相关分析模型,得到不同区域重金属污染的主要原因.最后,建立变异函数模型,描述重金属污染物的传播特征并结合克里格插值模型确定了各种重金属的污染源坐标.
In this paper,we study the evolution of heavy metals contamination in urban topsoil and geo- logical environment model.First, we employ the Kriging interpolation model to get the concentration spatial distribution of the eight kinds of heavy metals contamination.Next,we establish the Nemerow comprehensive evaluation model to provide the degree of heavy metals pollution in each subregion of the city.Then,we pro- pose the correlation analysis model to analyse the main reason of the heavy metals pollution in different re- gions.Finally, we build the variation function model to describe the transmission characteristics of heavy metal pollutants and then pollution sources are estimated by combining with the results of Kriging interpolation.
出处
《浙江外国语学院学报》
2013年第4期57-65,共9页
Journal of Zhejiang International Studies University
基金
浙江省大学生科技创新项目(2012R418002)
关键词
克里格插值
变异函数
相关分析
Kriging interpolation
variation function
correlation analysis
