欢迎访问《环境科学学报》编辑部网站！

快速检索			高级检索

污染控制技术及原理

陈永华,吴晓芙,蒋丽鹃,陈明利,曾敏,雷电,张珍妮,阳石英.处理生活污水湿地植物的筛选与净化潜力评价[J].环境科学学报,2008,28(8):1549-1554

Screening and evaluation of plant purification potential for phytoremediation of sanitary sewage

基金项目：国家科技部资助项目(No2007-DFA91420);国家林业局948项目(No2005-4-31);湖南省环境科学学科建设项目;中南林业科技大学引进人才基金(No06Y035)

摘要：为了建立一套科学的湿地植物筛选与净化潜力评价体系,以17种湿地植物为材料,在综合应用原有各种湿地植物筛选与评价指标的基础上,增加植物逆境酶和基质酶,对所有指标进行聚类分析.结果表明,17种植物的根系数量、长度、活力、叶片过氧化物酶活性、生长量、氮磷平均浓度、氮磷的积累能力存在一定的差异,根系附近基质脲酶活性与磷酸酶活性也存在一定的差异.根据净化潜力的综合评价体系,可以把17种植物聚类为3大类,第1大类净化潜力较强,包括美人蕉、芦苇、风车草、水葱、再力花、千屈菜、花叶美人蕉;第2大类净化潜力中等,包括菖蒲、花叶芦竹、香蒲、梭鱼草;第3大类净化潜力较弱,包括野芋、鸢尾、灯心草、葱兰、泽泻、花菖蒲.

Abstract：To establish a scientific system for screening wetland plants and evaluating their purification potential,cluster analysis was conducted on common plant indexes,combined with adverse circumstance enzyme and matrix enzyme activities from 17 species of wetland plants. The 17 plants differed in their root quantities,root length,vigor,leaf peroxide enzyme activity,biomass quantity,average concentration of nitrogen and phosphorus,and ability to accumulate nitrogen and phosphorus. Also,the matrix urease activities and phosphoric acid enzyme activities from the 17 plants′ root systems were different. The 17 wetland plants were clustered into 3 groups according to the synthetic purification potential evaluation system. The 1st group,including Canna indica,Phragmites australis,Cyperus alternifolius,Scirpus validus,Thalia dealbata,Lythrum salicaria,and Variegated canna had strong purification potential. The 2nd group,which included Acorus calamus,Arundo donax,Typha angustifolia,and Pontederia cordata,had medium purification ability; and the 3rd group which included Colocasia antiquorum Schott,Iris pseudoacorus,Juncus effuses,Zephyranthes candida,Alisma plantago-aquatica,and Iris ensata Thunb. was weak.

Key words：root system vigor peroxide enzyme growing biomass quantity N and P accumulation quantity matrix Urease matrix phosphatase