洞庭湖湿地8种优势植物对镉的富集特征

生态学杂志 ›› 2011, Vol. 30 ›› Issue (12): 2783-2789.

洞庭湖湿地8种优势植物对镉的富集特征

董萌1,2,赵运林2**,库文珍2,庹瑞锐1,戴枚斌3,易合成3

1湖南农业大学生物科学技术学院，长沙 410128；2湖南城市学院化学与环境工程系，湖南益阳 413000；3南洞庭湖自然保护区管理局，湖南益阳 411000

出版日期:2011-12-08 发布日期:2011-12-08

Cadmium enrichment characteristics of eight dominant plant species in Dongting Lake wetland.

DONG Meng1,2, ZHAO Yun-lin2**, KU Wen-zhen2, TUO Rui-rui1, DAI Mei-bin3, YI He-cheng3

1College of Biology and Technology, Hunan Agricultural University, Changsha 410128, China;2Department of Chemistry and Environment Engineering, Hunan City University, Yiyang 413000, Hunan, China; 3Administration Bureau of South Dongting Lake Nature Reserve, Yiyang 411000, Hunan, China

Online:2011-12-08 Published:2011-12-08

摘要/Abstract

摘要： 针对洞庭湖湿地土壤Cd污染严重的现状，对湖区滨岸带8种优势植物的Cd富集特征及其修复效果进行了分析。结果表明，蒌蒿(Artemisia selengensis)对Cd表现出显著的富集特征，对Cd污染的修复效果好，是洞庭湖土壤Cd污染的理想修复材料；南艾蒿(Artemisia verlotorum)对Cd污染具有较好的修复效果，可作为湿地土壤Cd污染修复的备选材料；芦苇(Phragmites australis)和南荻(Miscanthus lutarioriparius)植株的根部对Cd的积累量较高，具有良好的稳定修复效果，且由于二者地上部生物量大、能被连续刈割的特点，对洞庭湖湿地Cd污染治理起到一定的促进作用。

关键词: 硅, 连作, 黄瓜, 光合特性, 抗氧化酶

Abstract: Aiming at the present serious situation of soil Cd pollution in Dongting Lake wetland, this paper analyzed the Cd enrichment characteristics and remediation effects of eight dominant plant species growing in Dongting Lake area. Among the eight dominant plants, Artemisia selengensis presented a notable capacity to absorb Cd from lake soil, and had good effect in the remediation of Cd pollution, being an ideal plant for the bioremediation of Cd-polluted soil in Dongting Lake wetland. A. verlotorum had acceptable effect in the remediation of Cd pollution, being able to be selected as a potential candidate for the bioremediation of wetland soil Cd pollution. Phragmites australis and Miscanthus lutarioriparius had higher Cd accumulation in their roots, being available for the Cd enrichment, and their higher aboveground biomass, which could be harvested every year, could also play a positive role in controlling the Cd pollution in Dongting Lake wetland.

Key words: silicon, continuous cropping, cucumber, photosynthetic characteristics, antioxidant enzymes.

董萌,赵运林,库文珍,庹瑞锐,戴枚斌,易合成. 洞庭湖湿地8种优势植物对镉的富集特征[J]. 生态学杂志, 2011, 30(12): 2783-2789.

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