桂西地区稻田土壤重金属污染现状调查及评价

【目的】了解桂西地区稻田土壤重金属污染现状,为稻田土壤重金属污染防治提供科学依据。【方法】采集桂西地区水稻主产区稻田50个0~20 cm耕层土壤样品,分析其重金属镉、铅、砷含量,分别采用单因子指数法和Hakanson的潜在生态风险指数法对土壤环境质量和土壤潜在生态风险进行评价。【结果】桂西地区稻田土壤中总镉、总铅、总砷的含量分别为0.941、26.46和10.16 mg/kg。土壤样品中的镉、砷含量高于国家土壤环境质量的二级标准值分别占总样品54.0%和2.0%,稻田土壤中的镉为高生态风险。【结论】桂西地区稻田土壤主要受重金属镉的污染。...

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Published in南方农业学报 Vol. 45; no. 2; pp. 240 - 243
Main Author 黄玉溢 陈桂芬 熊柳梅 汪羽宁 叶开富 张兰 唐其展 王瑾
Format Journal Article
LanguageChinese
Published 广西农业科学院农业资源与环境研究所 南宁530007%广西农业科学院农业科技信息研究所 南宁530007%广西分析测试研究中心,南宁,530022 2014
Subjects
农田土壤
桂西地区
潜在生态风险
评价
重金属污染
paddy soil
assessment
农田土壤
评价
heavy metal pollution
桂西地区
重金属污染
潜在生态风险
potential ecological risk
western Guangxi
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ISSN2095-1191
DOI10.3969/j:issn.2095-1191.2014.2.240

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Summary:【目的】了解桂西地区稻田土壤重金属污染现状,为稻田土壤重金属污染防治提供科学依据。【方法】采集桂西地区水稻主产区稻田50个0~20 cm耕层土壤样品,分析其重金属镉、铅、砷含量,分别采用单因子指数法和Hakanson的潜在生态风险指数法对土壤环境质量和土壤潜在生态风险进行评价。【结果】桂西地区稻田土壤中总镉、总铅、总砷的含量分别为0.941、26.46和10.16 mg/kg。土壤样品中的镉、砷含量高于国家土壤环境质量的二级标准值分别占总样品54.0%和2.0%,稻田土壤中的镉为高生态风险。【结论】桂西地区稻田土壤主要受重金属镉的污染。
Bibliography:45-1381/S
paddy soil;heavy metal pollution;potential ecological risk;assessment;western Guangxi
Objective】 The purpose of this investigation was to understand the status of heavy metal pollution in paddy soil in western Guangxi and provide references for heavy metal pollution control. 【Method】The contents of Cd, Pb, and As of 50 soil samples from cultivation layer（0-20 cm）, which were taken from main rice producing areas in western Guangxi, were determined. The environment quality of soil was assessed with the single factor index and the potential ecological risk of paddy soil was evaluated with the potential ecological risk index of Hakanson. 【Result】The mean contents of Cd, Pb, and As in paddy soil samples were 0.941, 26.46 and 10.16 mg/kg, respectively. The Cd content of 54.0% soil samples and the As content of 2.0% soil samples were higher than the standard II of the national environment standard quality for soils. Cd in paddy soil showed high potential ecological risk. 【Conclusion】Paddy soil in western Gua
ISSN:2095-1191
DOI:10.3969/j:issn.2095-1191.2014.2.240