摘要
通过模拟垂直潜流人工湿地系统,在对菖蒲(Acorus calamus)、芦竹(Arundo donax)、茭白(Zizania latifolia)、旱伞草(Cyperus alternifolius)和再力花(Thalia dealbata)5种湿地植物的去污能力进行分析的基础上,利用最大熵(MAXENT)模型对它们在中国西南地区的适生区和分布的气候影响因子进行了综合分析。结果表明,5种湿地植物都有较高的去污能力,且不同植物的去污能力存在一定差异,对氮、磷去除效果较好的为旱伞草,茭白、再力花和菖蒲次之,芦竹较差;旱伞草在中国西南地区有着广泛的适生区,并可以越冬,是一种去污能力较好并可以全年使用的人工湿地植物。菖蒲、茭白、再力花也有较强的去污能力和气候适应能力,但是过冬效果相对较差,在西南地区大部分区域的春、夏、秋季适用于人工湿地栽种。芦竹虽然在西南地区适生区较广,但它在淹水环境中的去污能力相对较弱,可以适当地应用于人工湿地周边的湿生环境中。
Through the simulation of vertical subsurface flow constructed wetland system, the decontamination capability of Acorus calamus, Arundo donax, Zizania lati f olia, Cyperus alterni folius and Thalia dealbata were studied. MAXENT model was employed to analyze potential distribution area of the 5 wetland plants in Southwestern China and the main climate impact factors that influencing their distribution. The results showed that all the 5 wetland plants presented perfect water purification efficiency, however their contaminant removal capacity had some differ- ences. Cyperus alternifolius, which has wide range of potential distribution in Southwestern China, had the best re- moval capacity and was able to live through the winter, thereby it was regarded as a preferable wetland plant that can be used through the whole year. Acorus calamus, Zizania latifolia and Thalia dealbata also had good removal ca- pacity and climate adaptahihty, hut they had poor ability of living through the winter. So, they were applicable to plant in spring, summer, and autumn. Arundo donax, although wide spread in Southwestern China, was weaker in contaminant removal especially in water flooding condition, it was appropriately planted in plashy environment sur- rounding the wetland.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2013年第8期54-58,共5页
Environmental Pollution & Control
基金
国家水体污染控制与治理科技重大专项(No.2009ZX07425-003)
关键词
人工湿地
湿地植物
净化
气候适应性
最大熵模型
constructed wetland
wetland plants
purification
climate adaptability
maximum entropy model
作者简介
苏小红，女，1987年生，硕士研究生，研究方向为农村环境治理。
通讯作者。
