| 三峡库区消落带农作区镉污染特征研究 |
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| 引用本文： | 林俊杰,刘丹,何立平,付川,谢昆. 三峡库区消落带农作区镉污染特征研究[J]. 生态科学, 2011, 30(6): 586-589 |
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| 作者姓名： | 林俊杰 刘丹 何立平 付川 谢昆 |
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| 作者单位： | 1. 重庆三峡学院化学与环境工程学院, 重庆 404100; 2. 中国科学院沈阳应用生态研究所陆地生态过程重点实验室, 沈阳 110016; 3. 重庆三峡职业学院农业与生物工程系, 重庆 404100 |
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| 基金项目： | 重庆高校创新团队建设计划项目,重庆三峡学院青年项目 |
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| 摘 要： | 为了研究三峡库区消落带农作区重金属镉的污染状况,对三峡库区典型支流-苎溪河消落带农作区耕作情况及镉污染状况进行了调查。结果表明:苎溪河消落带农作区土壤镉含量普遍偏高,均超过了国家土壤环境质量三级标准,远高于四川省土壤环境背景值,并存在中等程度变异,说明镉污染存在普遍性。相应地上作物不同部位对镉均有一定程度富集,叶的富集能力最大,而果实的富集能力相对较小。作物可食部分镉富集能力顺序为:蕹菜>香菜>花生>豇豆>绿豆。其中,香菜和蕹菜的风险商HQ值>1,暴露风险高,对三峡库区生态安全存在一定潜在健康风险。
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| 关 键 词： | 镉 支流 消落带 农作区 三峡库区 |
| 收稿时间： | 2011-12-25 |
Pollution characteristics of cadmium in farmland of water level fluctuating zone in Three Gorges Reserver Area |
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| LIN Jun-jie , LIU Dan , HE Li-ping , FU Chuan , XIE Kun. Pollution characteristics of cadmium in farmland of water level fluctuating zone in Three Gorges Reserver Area[J]. Ecologic Science, 2011, 30(6): 586-589 |
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| Authors: | LIN Jun-jie LIU Dan HE Li-ping FU Chuan XIE Kun |
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| Abstract: | The content of cadmium(Cd) was investigated in the farmland of water level fluctuating zone of Zhuxi River.The results showed that the content of Cd in farmland exceeded GradeⅢof the national environmental quality standard,which also exceeded the soil background value in Sichuan Province.Cd was accumulated in different plant parts of crops,among which leaves had the maximum bioconcentration ability(BCA),and fruits had the minimum BCA.Overall,BCA in edible parts was in the order of water spinach>coriander herb>peanut>cowpea>mung bean.Water spinach and coriander herb would bring potential health risk to local residents with HQ>1. |
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