摘要
按8km×8km网格将聊城市耕地分为136个采样点,调查As,Cd,Cr,Cu,Hg,Ni,Pb,Zn等8种重金属的含量。采用地质累积指数与内梅罗指数相结合的综合指数法进行污染评价,以此判断重金属污染的程度;并对8种重金属进行各样点的含量差异分析;最后,应用ArcGIS8.3,以污染评价结果为数据支持,进行重金属污染空间分布研究。新的综合指数法评价结果表明,聊城市重金属污染的程度依次为Hg>Cu>Cd>Zn>Cr>Pb>As>Ni;各元素总体平均变异程度为:Zn>As>Hg>Cr>Ni>Cu>Pb>Cd;土壤各重金属污染分布不尽相同,但总体上区域差异较小。
As,Cd,Cr,Cu,Hg,Ni,Pb and Zn in 136 soil samples had been monitored in Liaocheng.A new method which connect geoaccumulation index with Nemero index was used to evaluate the metal pollution.The polluted degree of all heavy metals had been ensured.Then,the Variance in all samples of all heavy metals had been analyzed.At last,ArcGIS8.3 had been used to study the distribution of heavy metals pollution.The result showed that the polluted degree of all heavy metals is different.Its order is:Hg〉Cu〉Cd〉Zn〉,Pb〉As〉Ni.The Coefficient of variation order of all heavy metals is: Zn〉 As〉Hg〉Cr〉Ni〉Cu〉Pb〉Cd. There were not big difficult in different soil samples.
出处
《中国农学通报》
CSCD
北大核心
2009年第20期174-178,共5页
Chinese Agricultural Science Bulletin
基金
山东省优秀中青年科学家科研奖励基金"山东西部引黄灌溉对土壤理化性质的影响"(2007BS08026)
作者简介
刘衍君,女,1979年出生,山东文登人,讲师,硕士,研究方向:环境评价与管理。通信地址:252059山东省聊城大学东校区环境与规划学院,E-mail:liuyanjun7979@163.com。
通讯作者:张保华,男,1971年出生,山东莘县人,副教授,博士后,研究方向:土壤资源与环境管理。通信地址:252059山东省聊城大学东校区环境与规划学院,E-mail:zhangbaohua@lcu.edu.cn。