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常德市挺水植物水体净化能力研究 被引量:1

Study on the purification capacity of emergent plants in water of Changde
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摘要 针对常德地区的水体生态问题,本研究选用32种常德常见的挺水植物,通过测定其体内总氮(TN)和总磷(TP)的含量,筛选出TN和TP含量较高的水葫芦、石菖蒲和铜钱草,通过培养后,分别测定植物体内、培养水体以及底泥中TN、TP和重金属Cd、Cu的含量并进行分析比较。结果表明,对于总氮(TN)的去除效果大小依次为铜钱草>水葫芦>石菖蒲,总磷(TP)的去除效果大小依次为水葫芦>石菖蒲>铜钱草,水葫芦对于重金属Cu、Cd的净化效果均优于铜钱草和石菖蒲。综合来看,水葫芦对于氮磷及重金属的净水能力较强,但由于其属于外来入侵物种,生长迅速,应定时打捞防止蔓延。 To address the increasingly serious water ecological problems in Changde area,Eichhornia crassipes,Acorus tatarinowii,and Hydrocotyle chinensis with higher TN and TP content were selected from 32 common emergent plants in this area through the determination of total nitrogen(TN)and total phosphorus(TP)content.After polluted water culture,the contents of TN,TP and heavy metals Cd and Cu in plants,cultured water,and sediment were determined,analyzed and compared.The results showed that the removal effect of total nitrogen(TN)was in the order of Hydrocotyle chinensis>Eichhornia crassipes>Acorus tatarinowii,the removal effect of total phosphorus(TP)was in the order of Eichhornia crassipes>Acorus tatarinowii>Hydrocotyle chinensis,and the purification effect of Eichhornia crassipes on heavy metals Cu and Cd was better than that of Hydrocotyle chinensis and Acorus tatarinowii.It was concluded that Eichhornia crassipes had a good comprehensive purification effect on polluted water body,but as an invasive alien species which grows fast,it should be salvaged regularly.
作者 何笑笑 谢鹏 向仁姣 钱虹仙 廖悄 王云 邓爱华 HE Xiaoxiao;XIE Peng;XIANG Renjiao;QIAN Hongxian;LIAO Qiao;WANG Yun;DENG Aihua(Department of Life and Environmental Sciences,Hunan University of Arts and Science,Changde 415000,China)
出处 《湖南文理学院学报(自然科学版)》 CAS 2024年第1期39-44,共6页 Journal of Hunan University of Arts and Science(Science and Technology)
基金 湖南省科技创新计划资助项目(2021RC1013)。
关键词 常德市 挺水植物 水体净化 重金属 Changde City emergent plants water purification heavy metal
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