首页 | 本学科首页   官方微博 | 高级检索  
     检索      

冬季水生高等植物对富营养化湖水的净化作用
引用本文:王国祥,濮培民,张圣照,胡春华,胡维平.冬季水生高等植物对富营养化湖水的净化作用[J].中国环境科学,1999,19(2):0-0.
作者姓名:王国祥  濮培民  张圣照  胡春华  胡维平
作者单位:中国科学院南京地理与湖泊研究所,江苏,南京,210008
基金项目:国家科委和欧洲联盟科技部资助!CIl*-CT93-0094(DG12HSMU)
摘    要: 在太湖一湖湾的物理-生态工程围区内,采用覆膜和改变生态位的越冬技术,使喜早莲子草、风眼莲等漂浮植物能安全越冬,并有效地改善水体透明度,为沉水植物生长及种群自我演替提供了保障。静态试验结果表明,采取简易的防寒越冬技术,改变生态位的喜早莲子草对TN、NH4+-N、Chla的去除率达77.2%、90.1%、58.3%,透明度提高1.5倍:对喜早莲子草覆膜并间种沉水植物,这一镶嵌组合群落对TN、NH4+-N、CHla的去除率达65.7%、90.7%、58.7%,透明度提高1.6倍。动态试验结果表明,当富营养化湖水在围区内滞留时间达7.33d时,经越各处理的镶嵌组合群落使围区内水体透明度达90~100cm,比围区外提高2.6-3.0倍,对TN、TP及NH4+-N的浓度分别比围区外降低37.5%、52.0%及75.4%;而滞留时间低于4.33d时,净化效果不明显。

关 键 词:水生高等植物  越冬  净化  富营养化湖水  太湖
收稿时间:1900-01-01;

The purification ability of aquatic macrophytes for eutrophic lake water in winter
WANG Guo-xiang,PU Pei-min,ZHANG Sheng-zhao,HU Chun-hua,HU Wei-ping.The purification ability of aquatic macrophytes for eutrophic lake water in winter[J].China Environmental Science,1999,19(2):0-0.
Authors:WANG Guo-xiang  PU Pei-min  ZHANG Sheng-zhao  HU Chun-hua  HU Wei-ping
Abstract:In the enclosures of physical-ecological engineering, floating-plants,such as water peanut and hyacinth,can livethrough the winter with some overwintering techniques. These techniques include covering floating-plants with plasticfilm, changing the niche of floating-plants and rehabilitating the mosaic community of macrophytes (MCM). The ovenwintering water-peanut, Alternanthera philoxeroides Griseb, improves the transparency of the eutrophic lake waterTherefore, the submerged plants can survive in the winter. The removal efficiencies of submersed water-peanut for TN,NH4-N and Chla are 77.2%, 90. 1% and 58.3% in winter, respectively. The transparency in the enclosure of submersedwater-peanut is 1.5 times higher than that in the outside of enclosure. The removal efficiencies of MCM covered withplastic film for TN, NH4-N and Chla are 65.7%,90.7% and 58.7% in winter,respectively.The transparency is heightened1.6 times by MCM in winter.The results of dynamic experiment show that when the retention time of the eutrophic lakewater is 7.33 d in the MCM enclosure, the overwintering MCM can increase the transparency by 2.6-3.0 times(up to90~100cm). The concentrations of TN, TP and NH -N, decrease by 37.5%,52.0% and 75.4%,respectively. However,when the retention time is shorter than 4.33 d, the purification efficiencies are insignificant.
Keywords:aquatic macrophytes: overwintering: purification: eutrophic lake water  Lake Taihu
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《中国环境科学》浏览原始摘要信息
点击此处可从《中国环境科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号