葫芦岛地区土壤镉元素空间含量分布特征及污染评价研究  

Content Distribution Characteristics and Pollution Evaluation of Cadmium in Soil, Huludao Area

作　　者：李杨 丁振军 王星蒙 Li Yang;Ding Zhenjun;Wang Xingmeng(Liaoning Provincial Ecology&Environment Monitoring Center,Shenyang 110161,China)

机构地区：[1]辽宁省生态环境监测中心,辽宁沈阳110161

出　　处：《环境科学与管理》2022年第10期166-170,共5页Environmental Science and Management

摘　　要：为查明葫芦岛地区土壤镉元素(Cd)空间含量分布特征及污染模式,在分析土壤Cd元素空间含量分布特征基础上,分析Cd元素的迁移转化过程及其生态效应,为污染土壤修复治理、耕地保护和土地资源合理利用提供空间含量分布资料。通过研究发现,葫芦岛地区土壤Cd污染较为严重,主要以沿海地区葫芦岛市-高桥镇为中心向内陆呈扩散状;Cd元素有效性系数随深度增加,总体表现为先下降后升高的趋势,生物有效性高,极容易被植物吸收;建议首先从源头上控制进入土壤的重金属,其次因地制宜,综合治理土壤污染,对污染严重的土壤,建议改变土地利用类型。In order to figure out the pollution mode of cadmium(Cd) in soil from Huludao area, this study analyzed the migration and transformation process of Cd and its ecological effect, based on the analysis of Cd content distribution Characteristics in soil. The study could provide geochemical data for the renovation and treatment of polluted soil, farmland protection and rational utilization of land resources. The results show that soil Cd pollution in Huludao area is very serious, and the polluted areas radiate mainly from the coastal area inland(Gaoqiao Town, Huludao) to coastal area;with the increase of depth, the availability coefficient of Cd generally shows a trend of first decreasing and then increasing, with high bioavailability and easy absorption by plants. It is suggested to control the heavy metals entering the soil from the source, as well as to control the soil pollution in comprehensive methods according to local conditions. The study suggested to change the using type of land for severely polluted soil.

关 键 词：镉元素 土壤污染评价 空间含量分布 葫芦岛 

分 类 号：X825[环境科学与工程—环境工程]