| 不同水分条件对蜈蚣草修复砷污染土壤的影响 |
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| 引用本文： | 刘秋辛,阎秀兰,廖晓勇,林龙勇,杨静.不同水分条件对蜈蚣草修复砷污染土壤的影响[J].环境科学,2015,36(8):3056-3061. |
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| 作者姓名： | 刘秋辛 阎秀兰 廖晓勇 林龙勇 杨静 |
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| 作者单位： | 1. 中国科学院地理科学与资源研究所，环境损害与污染修复北京市重点实验室，北京 100101; 中国科学院大学，北京 100049
2. 中国科学院地理科学与资源研究所，环境损害与污染修复北京市重点实验室，北京 100101 |
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| 基金项目： | 中国科学院地理科学与资源研究所优秀青年人才基金项目(2012RC203); 国家自然科学基金项目 (41271339) |
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| 摘 要： | 采用室内盆栽实验研究了不同土壤含水量(绝对含水量10%~60%)对蜈蚣草的生物量、砷富集及蜈蚣草和土壤中砷的形态的影响.结果表明,土壤含水量35%~45%的范围内蜈蚣草的修复效率显著高于其他处理,可达到4.48%~5.00%.在此水分区间内,植物细胞的质膜透性较小且植株的生物量较大.蜈蚣草地上部和地下部的最大干重出现在45%的含水量下,分别为2.95 g·plant-1和11.95 g·plant-1.适宜的水分条件利于蜈蚣草吸收和累积土壤中的砷,35%的含水量下植株地上部和地下部的砷含量可分别达到307.3 mg·kg-1和218.6 mg·kg-1,而总砷累积量在40%的含水量下达到峰值2.81mg·plant-1.将土壤含水量控制为35%~45%,还可提高蜈蚣草地上部中As(Ⅴ)的还原效率,促进了蜈蚣草的砷解毒.研究结果对于蜈蚣草大规模种植和工程应用中的水分管理措施具有重要的指导意义.
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| 关 键 词： | 蜈蚣草 砷 土壤含水量 植物修复 修复效率 |
| 收稿时间： | 2/3/2015 12:00:00 AM |
| 修稿时间： | 2015/3/20 0:00:00 |
Effects of Soil Moisture on Phytoremediation of As-Contaminated Soils Using As-Hyperaccumulator Pteris vittata L. |
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| LIU Qiu-xin,YAN Xiu-lan,LIAO Xiao-yong,LIN Long-yong and YANG Jing.Effects of Soil Moisture on Phytoremediation of As-Contaminated Soils Using As-Hyperaccumulator Pteris vittata L.[J].Chinese Journal of Environmental Science,2015,36(8):3056-3061. |
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| Authors: | LIU Qiu-xin YAN Xiu-lan LIAO Xiao-yong LIN Long-yong and YANG Jing |
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| Institution: | Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;University of Chinese Academy of Sciences, Beijing 100049, China;Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;Beijing Key Laboratory of Environmental Damage Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | |
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| Keywords: | Pteris vittata L arsenic soil moisture phytoremediation remediation efficiency |
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