连续可调式沉水植物网床对河道水质的修复

应用生态学报 ›› 2012, Vol. 23 ›› Issue (09): 2580-2586.

连续可调式沉水植物网床对河道水质的修复

吴海龙^1,2,霍元子^1,2,邵留^1,2,王阳阳^1,2,于克锋^1,2,何培民^1,2**,温文科^1,2

(¹上海海洋大学水产与生命学院, 上海 201306; ²上海海洋大学上海高校水域环境生态工程研究中心, 上海 201306)

出版日期:2012-09-18 发布日期:2012-09-18

Bioremediation of river water quality by consecutively adjustable submerged vegetation net.

WU Hai-long^1,2, HUO Yuan-zi^1,2, SHAO Liu^1,2, WANG Yang-yang^1,2, YU Ke-feng^1,2, HE Pei-min^1,2, WEN Wen-ke^1,2

(¹College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China; ²Shanghai Research Center of Universities for Water Environment & Ecology Engineering, Shanghai Ocean University, Shanghai 201306, China).

Online:2012-09-18 Published:2012-09-18

摘要/Abstract

摘要： 在太湖贡湖水源保护区陆域的一条长约200 m的污染河道内构建了一系列连续可调式沉水植物网床,形成了以菊花草、苦草、伊乐藻、轮叶黑藻和菹草等沉水植物构成的水生植物群落;跟踪监测了总氮(TN)、铵态氮(NH₄⁺-N)、亚硝态氮(NO₂^--N)、硝态氮(NO₃^--N)、总磷(TP)和磷酸盐(PO₄^3--P)等水质指标,分析沉水植物网床引导沉水植被恢复对污染河道的水质修复效果.结果表明: 沉水植被网床构建后,水体透明度显著升高,由修复前的0.5 m提高到1.7~1.8 m;在沉水植被网床构建后的第5天和第20天,TN和TP的削减率分别为35.6%、66.3%和29.4%、63.2%;5个月后,修复河道水体内NH₄⁺-N、NO₂^--N、NO₃^--N、TN、PO₄^3--P和TP的浓度比对照组显著降低,削减率分别达到92.4%、76.8%、72.7%、73.9%、90.5%和92.0%.由连续可调式沉水植被网床引导恢复的水生植物群落可用于河道,特别是陆域浅水污染水体的生态修复.

Abstract: A series of consecutively adjustable submerged vegetation nets were constructed in a polluted shallow river with a length of about 200 m and nearby the water resource protection area of Taihu Lake in East China, forming an aquatic vegetation consisted of submerged plant species Cabomba caroliniana, Vallisneria natans, Elodea nuttallii, Hydrilla verticillata, and Potamogeton crispus. The water quality indices including total nitrogen (TN), ammonium nitrogen (NH₄⁺-N), nitrite nitrogen (NO₂^--N), nitrate nitrogen (NO^₃--N), total phosphorus (TP), and phosphate (PO₄^3--P) were monitored, and the bioremediation effect of the vegetation nets was evaluated. After setting up the vegetation nets, the Secchi depth (SD) of the river changed from 0.5 m to 1.7-1.8 m, and the TN and TP concentrations 15 and 20 days after the nets constructed decreased by 35.6% and 66.3%, and 29.4% and 63.2%, respectively. After five months, the concentrations of NH₄⁺-N, NO₂^--N, NO₃^--N, TN, TP, and PO₄^3--P decreased by 92.4%, 76.8%, 72.7%, 739%, 905%, and 92.0%, respectively. This study showed that consecutively adjustable submerged vegetation net could be a potential approach for treating polluted river waters, particularly for the bioremediation of polluted small landscape shallow water bodies.

吴海龙1,2,霍元子1,2,邵留1,2,王阳阳1,2,于克锋1,2,何培民1,2**,温文科1,2. 连续可调式沉水植物网床对河道水质的修复[J]. 应用生态学报, 2012, 23(09): 2580-2586.

WU Hai-long1,2, HUO Yuan-zi1,2, SHAO Liu1,2, WANG Yang-yang1,2, YU Ke-feng1,2, HE Pei-min1,2, WEN Wen-ke1,2. Bioremediation of river water quality by consecutively adjustable submerged vegetation net. [J]. Chinese Journal of Applied Ecology, 2012, 23(09): 2580-2586.