公路旁土壤重金属空间分布及其与理化性质的关系  

Spatial Distribution of Heavy Metals in Roadside Soils and Its Correlation with Soil Physicochemical Properties

作　　者：李仰征[1] 莫世江[1] 马建华[2] 

机构地区：[1]毕节学院地理与生命科学学院,贵州毕节551700 [2]河南大学资源与环境研究所,河南开封475004

出　　处：《湖北农业科学》2014年第3期527-531,共5页Hubei Agricultural Sciences

基　　金：贵州省社会发展与科技攻关计划项目(SY[2013]3171);贵州省教育厅高校人文社会科学项目(10zc123)

摘　　要：为了探讨公路旁土壤重金属元素的水平与垂直分布特点及土壤理化性质与其关系,为土壤修复提供参考,采用标准方法测定重金属含量和土壤理化性质,应用SPSS 10.0、CorelDRAW12等软件进行数据统计与作图研究土壤重金属空间分布与理化性质的关联性。结果表明,土壤重金属水平方向分布总体表现为靠近公路区域积累较强。垂直方向分布表现为表层富集明显,但是没有随剖面深度的加大而逐渐线性降低,这可能是农耕深翻、降水淋溶和土壤性质等多因素共同造成的。对于土壤重金属,pH与它们的关系最为密切(Cu与Cr除外),其次是CEC和黏粒含量,密切程度最差的是SOC(Pb除外)。The horizontal and vertical distributions of heavy metals in roadside soils were explored, and its correlation with soil physicochemical properties was analyzed to provide reference for soil remendiation. Experiments were taken to examine soil heavy metals by national standard methods. Meanwhile,the software of SPSS10.0 and CorelDWAW12 were used for data analysis and result illustration. The results showed that horizontally, roadside soil accumulated more rapidly than farther region overall. Vertically, the enrichment of metals on soil surface is obvious, but it does not decrease continuously with soil profile depth, which might be caused by farming tillage, rain leaching and soil properties. PH value is most consanguineous to the heavy metals（except Cu and Cr） analysed by gray model, followed by CEC and clay content. SOC had the least relevance to it（except for Pb）.

关 键 词：公路旁土壤 重金属 空间分布 灰色关联 

分 类 号：S151.9[农业科学—土壤学] X131.3[农业科学—农业基础科学]