| 果蔗地土壤重金属含量特征及风险评价 |
| |
| 引用本文： | 王天顺,杨玉霞,廖洁,范业赓,牙禹,朱俊杰,莫磊兴.果蔗地土壤重金属含量特征及风险评价[J].湖北农业科学,2017,56(7). |
| |
| 作者姓名： | 王天顺 杨玉霞 廖洁 范业赓 牙禹 朱俊杰 莫磊兴 |
| |
| 作者单位： | 广西农业科学院农产品质量安全与检测技术研究所/农业部甘蔗品质监督检验测试中心(南宁),南宁,530007 |
| |
| 基金项目： | 广西农业科学院基本科研业务专项重点项目，广西农业科学院基本科研业务专项团队项目 |
| |
| 摘 要： | 以广西壮族自治区果蔗地表层土壤(0~20 cm)作为调查对象,分析了土壤中重金属Cd、Pb、Cr、Cu、Zn、As和Hg的含量。以《土壤环境质量标准》二级标准为参照标准,采用单因子污染指数法、综合污染指数法、地积累指数法和潜在生态危害指数法对研究区域土壤中重金属污染特征及其生态风险进行评价。结果表明,研究区域土壤中Cd、Pb、Cr、Cu、Zn、As和Hg的平均含量分别为0.81、30.4、54.5、29.8、107.4、16.69、0.28 mg/kg,综合污染指数为2.03,属于中污染。地积累指数评价结果表明,Cd的地积累指数为1.02,属于中等污染,Hg的地累积指数为0.30,处于轻-中等污染;潜在生态危害综合指数评价结果显示,研究区域土壤中重金属污染处于中等生态风险程度,其中Cd的潜在生态危害指数最高,达到强生态危害程度。因此,增强果蔗地土壤安全性生产管理、严控土壤污染源与推行标准农业生产是十分必要的。
|
| 关 键 词： | 土壤 重金属 污染特征 污染评价 果蔗地 |
Content Characteristics and Risk Assessment of Heavy Metals in Chewing Cane Soils |
| |
| WANG Tian-shun,YANG Yu-xia,LIAO Jie,FAN Ye-geng,YA Yu,ZHU Jun-jie,MO Lei-xing.Content Characteristics and Risk Assessment of Heavy Metals in Chewing Cane Soils[J].Hubei Agricultural Sciences,2017,56(7). |
| |
| Authors: | WANG Tian-shun YANG Yu-xia LIAO Jie FAN Ye-geng YA Yu ZHU Jun-jie MO Lei-xing |
| |
| Abstract: | The contents of soil heavy metals,such as Cd,Pb,Cr,Cu,Zn,As and Hg,in surface soil (0~20 cm) from the main chewing cane production farmland in Guangxi Zhuang Autonomous Region,were investigated. Pollution characteristics of heavy metals in soils were observed on the basis of environmental quality secondary standard values of single factor pollution index method and comprehensive pollution index method. Potential ecological risk assessment was evaluated by using the geoaccumu-lation index (Igeo) and potential ecological risk index (RI). The results indicated that the average concentrations of Cd,Pb,Cr, Cu,Zn,As and Hg were 0.81,30.4,54.5,29.8,107.4,16.69 and 0.28 mg/kg,respectively. According to the comprehensive pollu-tion index,the pollution degree was middle degree with PN was 2.03. According to the geoaccumulation index,the pollution de-gree of Cd was middle degree with Igeo was 1.02,and Hg ranged from light to middle degree with Igeo was 0.30. The potential ecological risk index indicated that the heavy metals in the soils from research area were at the moderate ecological hazard level. The rate of contribution for Cd was the highest to potential ecological risk index. Thus,effective farmland soil manage-ment is necessary to ensure security production, control soil pollution sources,and implement standard agricultural production. |
| |
| Keywords: | soils heavy metals contaminant characteristics risk assessment chewing cane soil |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
