摘要
种植水生植物是富营养化水生态系统修复的重要方法。本研究选取漂浮植物凤眼莲、浮叶植物黄花水龙、沉水植物苦草和挺水植物黄菖蒲4种不同类型的水生植物为研究对象,探究其对模拟富营养化水生态系统的修复效果和净化机制。结果表明,4种水生植物均能显著降低系统中的氮磷、COD和叶绿素a浓度,其中总氮去除率为44%~82.4%,总磷去除率为31.4%~84.1%,COD去除率为56.63%~72%,叶绿素a的降低率为19.1%~72.9%。不同水生植物修复效果有所差异,凤眼莲对氮磷的去除和叶绿素a浓度降低能力最强,黄菖蒲在COD的去除上效果最好。植物通过吸收对模拟富营养化淡水系统中氮磷的去除贡献较小,对氮的去除贡献率为0.51%~4.51%,对磷的去除贡献率为1.03%~3.90%。
Planting aquatic plants is an important way to restore eutrophication water ecosystem. In this study, 4 different types of aquatic plants, floating plant Eichhornia crassipes, floating leaf plant Ludwigia peploides,ubmerged macrophyte Vallisneria natans, and emergent aquatic plant Iris pseudacorus, were studied to explore the remediation effect and purification mechanism of simulated eutrophication water ecosystem. The results showed that 4 kinds of aquatic plants could reduce the concentration of nitrogen, phosphorus, COD and chlorophyll a in the system. The total nitrogen removal rate was 44%~82.4%, the total phosphorus removal rate was 31.4%~84.1%, the COD removal rate was 56.63%~72%, and the decrease rate of chlorophyll a was 19.1%~72.9%. The restoration effect of different aquatic plants was different, Eichhornia crassipes had the strongest ability in removal of nitrogen and phosphorus and the decrease of chlorophyll a concentration, and Iris pseudacorus had the best effect on the removal of COD. Plants contributed quite little to the removal of nitrogen and phosphorus from simulated eutrophication freshwater systems by absorption, the contribution rate to nitrogen removal is 0.51%~4.51%, and the contribution rate of phosphorus removal is 1.03%~3.90%.
作者
陈照方
陈凯
杨司嘉
Chen Zhaofang;Chen Kai;Yang Sijia(Yellow River Engineering Consulting Co., Ltd., Zhengzhou, 450003)
出处
《分子植物育种》
CAS
CSCD
北大核心
2019年第13期4501-4506,共6页
Molecular Plant Breeding
基金
水利部黄河勘测规划设计有限公司水环境重点项目基金(2017YFC0404402)资助
关键词
水生植物
富营养化
淡水生态系统
Aquatic plants
Eutrophication
Freshwater ecosystems
