沉水植物（submerged plants ）是指植物体全部位于水层下面营固着生存的大型水生植物。它们的根有时不发达或退化，植物体的各部分都可吸收水分和养料，通气组织特别发达，有利于在水中缺乏空气的情况下进行气体交换。这类植物的叶子大多为带状或丝状，如苦草、金鱼藻、狐尾藻、黑藻等。
The reduction of submerged plant biotechnology can increase the amount of algal biomass. The clastic sediment input increase by five-fold, not only can cause water quality deterioration, but also a large decline in benthic biomass.
结果表明,水体有机污染负荷BOD5增加10倍,可以导致水生态系统的全面退化;而分别增加氮磷面源和污染负荷的10倍,则会引起水质和藻类不同程度的退化;沉水植物生物量的降低可使着生藻类生物量全面提高;沉积物碎屑输入量增加5倍,不但可造成水质变差,还可引起大型底栖动物生物量的下降。
参考来源 - 淡水生态系统退化机制与恢复研究There was in the order of submerged macrophyte > floating plant > emerged plant.
呈现出沉水植物＞浮水植物＞挺水植物顺序。
参考来源 - 水生植物群落建植对城市湖泊水环境影响研究Potamogeton crispus L. is a kind of common submerged vegetation which distributes widely in the world and has multiple utilizations and ecological functions.
菹草乃常见的沉水植物，它生存范围广，适应能力强，具有多种利用价值和生态功能。
参考来源 - 环境对菹草生长和繁殖的影响及菹草对富营养化水净化能力的研究The improvement of water quality in Nanhu Lake may not be the result of biomanipulation,but more likely to thank to the reduced disturbance by removal of fish and the restoration of the submerged macrophyte community.
南湖水质的改善可能并非是鱼类调控导致的浮游动物群体大型化的结果,更可能要归功于杂食性鱼类捕除减少了对底质的扰动和大型沉水植物群落的重建。
参考来源 - 后生浮游动物群落对热带浅水湖泊生态修复的响应Submerged vegetation is a kind of good feedstuff resources with rich protein, mineral substance and vitamin, but ash and sodium sulfate attached to submerged vegetation affect dainty of cattle and sheep.
以龙须眼子菜为代表的沉水植物是一种富含蛋白质、矿物质及维生素的良好饲料资源,但是由于水草表面吸附一层粗灰份,作为饲料影响牛、羊的适口性。
参考来源 - 锤片式粉碎机设计参数对水草粗灰份去除率影响的试验研究Submerged aquatic plants will be contabescence after 7~14 days if it was in high ammonia concentration solution.
沉水植物在高铵离子环境中因产生“氨害”作用在7~14天内即表现为衰亡现象。
参考来源 - 浅水湖泊表层沉积物氮形态特征及在生物地球化学循环中的功能·2,447,543篇论文数据，部分数据来源于NoteExpress
沉水植物是水体中磷在上覆水与底质中分配的重要影响因素。
Submerge plant was an importance factor that affected the distribution of phosphorus between overlying water and sediment.
所以系统研究沉水植物对污染水体所产生的水质改善效应是必要的。
So it is necessary to study synthetically the water effect made by submerged macrophytes on polluted water body.
通过野外调查研究了白河沉水植物种类、群落类型、生物量及覆盖度。
By carrying out the investigation of Baihe river, we got the species, community type, biomass and cover rate of submersed vegetation, the distribution and character of plant are under analyed.
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