| 苦草对砷的富集作用 |
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| 引用本文： | 陈国梁,冯涛,李志贤,陈章,徐建明,王海华,向言词,余光辉,朱佳文.苦草对砷的富集作用[J].生态学报,2017,37(14):4671-4675. |
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| 作者姓名： | 陈国梁 冯涛 李志贤 陈章 徐建明 王海华 向言词 余光辉 朱佳文 |
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| 作者单位： | 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室, 湘潭 411201;浙江大学环境与资源学院, 杭州 310058,湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室, 湘潭 411201,湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室, 湘潭 411201,湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室, 湘潭 411201,浙江大学环境与资源学院, 杭州 310058,重金属污染土壤生态修复与安全利用湖南省高校重点实验室, 湘潭 411201,重金属污染土壤生态修复与安全利用湖南省高校重点实验室, 湘潭 411201,湖南科技大学建筑与城乡规划学院, 湘潭 411201,湖南科技大学建筑与城乡规划学院, 湘潭 411201 |
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| 基金项目： | 国家自然科学青年基金项目（41501343）；国家自然科学青年基金项目（31400374）；湖南省重点实验室开放基金项目（E21501）；湖南科技大学自然科学基金项目（E54005）；湖南省教育厅项目（15C0534）；湖南省教育厅项目（14B066） |
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| 摘 要： | 为了探求合适的水体砷污染修复植物及砷在食物链中传递、累积的特点,以常见的沉水植物-苦草为研究对象,对受砷污染的水体进行修复,结果表明:苦草对水环境中砷的富集能在较短的时间内(3 d)达到一个较大值,到第14天,不同砷水平(2 mg/L)处理下的苦草对砷富集系数均超过200;苦草中砷浓度随处理时间及外源砷浓度的增加而增加,且与外源砷浓度之间存在极显著地正相关;苦草在不同浓度砷处理下都生长良好,对砷胁迫表现出较强的耐受性。因此,苦草对于水体的砷污染有着很好的去除效果,同时也能很好地反映出一个地区的砷污染水平。
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| 关 键 词： | 植物修复 砷 水污染 沉水植物 苦草 |
| 收稿时间： | 2016/3/30 0:00:00 |
Characterization of arsenic accumulation by Vallisneria natans |
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| CHEN Guoliang,FENG Tao,LI Zhixian,CHEN Zhang,XU Jianming,WANG Haihu,XIANG Yanci,YU Guanghui and ZHU Jiawen.Characterization of arsenic accumulation by Vallisneria natans[J].Acta Ecologica Sinica,2017,37(14):4671-4675. |
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| Authors: | CHEN Guoliang FENG Tao LI Zhixian CHEN Zhang XU Jianming WANG Haihu XIANG Yanci YU Guanghui and ZHU Jiawen |
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| Institution: | Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, China;College of Environmental & Resource Science of Zhejiang University, Hangzhou 310058, China,Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, China,Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, China,Hunan Province Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, China,College of Environmental & Resource Science of Zhejiang University, Hangzhou 310058, China,Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Hunan Province, Xiangtan 411201, China,Key Laboratory of Ecological Remediation and Safe Utilization of Heavy Metal-Polluted Soils, College of Hunan Province, Xiangtan 411201, China,School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, China and School of Architecture and Urban Planning, Hunan University of Science and Technology, Xiangtan 411201, China |
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| Abstract: | To identify suitable plant species for the phytoremediation of arsenic-contaminated water and ensure the safety of people and animals, Vallisneria natans (Lour.) Hara was investigated for its ability to remove As from contaminated water. After 3 days of different As treatments (<2 mg/L), the As concentrations in the plants were high and the bioconcentration factor of V. natans exceeded 200 at 14 days. The As concentrations in all plants increased with time and increasing As concentration in the environment. As accumulation in the plant was significantly correlated with that in the environment. After exposure to different As treatments, V. natans showed good growth. This suggests that V. natans is highly tolerant to As and stable against environmental changes. Therefore, phytoremediation of arsenic-contaminated water can be achieved using V. natans and As accumulation in plants can reflect the level of As pollution in a region. |
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| Keywords: | phytoremediation arsenic water pollution submerged macrophytes Vallisneria natans (Lour ) Hara |
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