不同浓度余氯对4种沉水植物生长影响的比较研究  

Comparative Study on the Effects of Residual Chlorine Concentrations on the Growth of Four Kinds of Submerged Macrophytes

作　　者：黄伟平 李豪 田方鑫 赵重阳 刘世婷 陈洪斌[1] HUANG Wei-ping;LI Hao;TIAN Fang-xin;ZHAO Chong-yang;LIU Shi-ting;CHEN Hong-bin(College of Eiwironmental Science&Engineering,Tongji University,Shanghai 200092,China;Hangzhou Yuhang Water Holding Group Shuiniu Environment Co.,Ltd.,Hangzhou 311100,China;Sichuan Environmental Protection Industry Group Co.,Ltd.,Chengdu 610046,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]杭州余杭水务控股集团水牛环境公司,杭州311100 [3]四川省环保产业集团有限公司,成都610046

出　　处：《四川环境》2022年第2期37-43,共7页Sichuan Environment

摘　　要：为筛选出具有耐氯性的沉水植物,选取金鱼藻(Ceratophyllum demersum)、苦草(Vallisneria natans)、水蕴草(Elodea densa)、轮叶黑藻(Hydrilla verticillata)4种沉水植物为研究对象,在静态模拟条件下设置0、0.4、0.8、1.2mg/L的梯度浓度余氯,通过表观生长目测估计方法和测定叶绿素含量的变化,比较研究不同浓度余氯对沉水植物的生长影响。结果表明,4种沉水植物中水蕴草的表观生长状况最好,叶绿素含量最高,能在0.8 mg/L的余氯浓度下存活和生长,表现出较好的耐氯性。对于以含氯尾水作为补水的湿地公园,本文研究结果可为其沉水植物的选择提供参考,以提高尾水回用的生态效益。In order to screen out submerged macrophytes with chlorine tolerance, four submerged macrophytes, Ceratophyllum demersum, Vallisneria natans, Elodea densa and Hydrilla verticillata, were selected as experimental subject. Under static simulation conditions, gradient concentrations of residual chlorine were set at 0, 0. 4, 0. 8 and 1. 2 mg/L, and the effects of different concentrations of residual chlorine on the growth of submerged macrophytes were comparatively studied by visual observation of apparent growth and determination of chlorophyll content. The results showed that among the four submerged macrophytes, Elodea densa had the best apparent growth condition and the highest chlorophyll content, and can grow under the residual chlorine concentration of 0. 8 mg/L, showing good chlorine tolerance. For wetland parks with chlorine-containing reclaimedwater as water supplement, the results of this paper can provide reference for the selection of submerged macrophytes to improve the ecological benefits of reclaimed water reuse.

关 键 词：尾水回用 耐氯性 沉水植物 

分 类 号：X173[环境科学与工程—环境科学]