摘要
以江汉平原仙桃市为研究区,利用222个面上表层土壤和4组包气带土壤中重金属含量数据,结合土地利用类型,分析讨论了研究区土壤中重金属元素含量的平面和垂向分布规律,并采用因子分析法探究了包气带土壤中重金属元素分布迁移的规律及影响因素。结果表明:研究区表层土壤中重金属元素含量的分布较为均一,除Cd、Ni和As外,其他重金属元素的含量均小于国家土壤环境质量一级标准;研究区不同土地利用类型的土壤中重金属元素含量大小的排序依次为城郊菜地>林地>水田>旱地,区域重金属元素含量的差异主要来源于土壤母质和人为污染;分布迁移的主要因素为土壤的氧化还原性、有机质含量和酸碱性。
Using the soil test data of 222 surface soils and four unsaturated zones in Xiantao City of Jianghan Plain and combined with land-use types,this paper analyzes and discusses the horizontal and vertical distribution rules of the contents of heavy metals in the soil of Jianghan Plain,and applies the factor analysis method to exploring the distribution and migration of heavy metal elements in the unsaturated zone and the influencing factors.The results shows that the distribution of heavy metal contents in the surface soil in the study area is relatively uniform.Except for Cd,Ni and As,the contents of other heavy metals all meet the first grade of China＇s Environmental Quality Standard for Soils considering different land use types,the contents of heavy metals in soils are suburban vegetables〉forests 〉paddy fields 〉dry lands.The differences of the contents of heavy metals are mainly caused by soil parent materials and human pollution;The main factors influencing the distribution and migration of heavy metals in the study area are oxidation and reduction,organic matter content and acidity and alkalinity.
作者
王斌
甘义群
陈秋菊
WANG Bin,GAN Yiqun,CHEN Qiuju(School of Environmental Studies, China University of Geosciences （Wuhan ） ,Wuhan 430074, China)
出处
《安全与环境工程》
CAS
北大核心
2018年第3期8-14,33,共8页
Safety and Environmental Engineering
基金
中国地质调查局二级项目(DD20160255)
关键词
土壤
重金属分布
因子分析
影响因素
土地利用类型
仙桃地区
soil
distribution of heavy metal
factor analysis
influencing factor
landuse type
Xiantao District
作者简介
王斌（1993-），男，硕士研究生，主要研究方向为水文地质与环境地质。E-mail：285805862@qq．com;通讯作者：甘义群（1977-），男，博士，教授，主要从事环境地质调查方面的研究。E-mail：yiqungan@cug．edu．cn
