摘要
目前矿区土壤的重金属污染问题引起了世界范围的高度关注。对广东省内某一矿区周边耕地土壤中重金属的污染现状进行调查,采集了矿区周围耕地芭蕉、水稻、玉米、黄豆、番薯及对应土壤,参照《土壤农业化学分析方法》进行重金属含量测定。结果表明:作物样及其对应土壤都受到了重金属Cd、Pb、Cu、Zn的污染,其中污染程度最高的是Cu,综合污染指数法评价表明,4种土壤的综合污染指数都大于2,整体属于中度污染,芭蕉土的综合污染指数超过4,属于严重污染。玉米、芭蕉、番薯的重金属含量处于较高水平,对重金属有一定的富集作用。可见,采矿会对周边土地造成不可忽视的重金属污染。
The soil heavy metal pollution in mine areas is an issue widely concerned.A study was conducted to investigate the heavy metal contamination of the soil and vegetation in one of the mining fields in Guangdong.The soils,plantain,rice,soybean,maize,and sweet potato were collected from the farmland around the mining area,and the heavy metals were determined.It was found that all the plants and soil samples were contaminated by Cd,Pb,Cu and Zn,especially by Cu.According to nemerow integrated pollution index,the index of 4 kind of soils were above 2,which meaning middle level pollution.Plantain soil was intensely polluted with the index of 4.The concentrations of most heavy metals were at high level in 3 kinds of vegetation samples（maize,plantain,sweet potato）,due to the phytoremediation of polluted soils.Above all,mining would cause and increase the soil heavy mental pollution around the field.
出处
《热带作物学报》
CSCD
北大核心
2016年第6期1194-1198,共5页
Chinese Journal of Tropical Crops
基金
广东省自然科学基金(No.2015A030313418)
广州市科技计划项目(No.2014J4100184)
关键词
重金属污染
矿区
土壤与植物
Heavy mental pollution
Mining area
Soil and vegetation
