首页 | 官方网站   微博 | 高级检索  
     

不同氮磷比条件下浮游藻类群落变化
引用本文:孙凌,金相灿,钟远,张冬梅,朱琳,戴树桂,庄源益.不同氮磷比条件下浮游藻类群落变化[J].应用生态学报,2006,17(7):1218-1223.
作者姓名:孙凌  金相灿  钟远  张冬梅  朱琳  戴树桂  庄源益
作者单位:1. 南开大学环境科学与工程学院,天津,300071
2. 中国环境科学研究院水环境研究所,北京,100012
基金项目:国家重点基础研究发展计划(973计划);教育部南开大学、天津大学科技合作基金
摘    要:选取天津市小型人工湖湖水样品,调整氮磷起始质量比(分别为0.5∶1、7.2∶1、25∶1、50∶1),在水族试验箱内进行生态模拟试验,探讨城市湖水浮游藻类群落对不同氮磷比例的响应.与对照组相比,高氮磷比组绿藻种类减少,蓝藻种类变化不大;低氮磷比组蓝、绿藻种类数均减少.高氮磷比的中氮和高氮箱内,藻类生物量、细胞密度与叶绿素a都远高于对照和高磷箱;高氮箱中叶绿素a均值最高,为69.7 μg·L-1,中氮箱次之,为54.3 μg·L-1,对照与高磷箱分别为30.3和29.7 μg·L-1.试验中后期,高磷箱绿藻门美丽胶网藻(Dictyosphaerium pulchellum)一直占据优势地位;而中氮箱和高氮箱主要优势藻种为皮状席藻(Phormidium corium)、细胶鞘藻(Phormidium tenue)、湖泊鞘丝藻(Lyngbya limnetica)和铜绿微囊藻(Microcystis aeruginosa)等蓝藻.对照箱内物种丰富度最高,中氮箱内生态优势度最高.

关 键 词:浮游藻类  群落结构  氮磷比例  城市水体
文章编号:1001-9332(2006)07-1218-06
收稿时间:2005-07-29
修稿时间:2006-05-08

Changes of algal communities in water body with different proportions of nitrogen and phosphorus
SUN Ling,JIN Xiangcan,ZHONG Yuan,ZHANG Dongmei,ZHU Lin,DAI Shugui,ZHUANG Yuanyi.Changes of algal communities in water body with different proportions of nitrogen and phosphorus[J].Chinese Journal of Applied Ecology,2006,17(7):1218-1223.
Authors:SUN Ling  JIN Xiangcan  ZHONG Yuan  ZHANG Dongmei  ZHU Lin  DAI Shugui  ZHUANG Yuanyi
Affiliation:College of Environmental Science & Engineering, Nankai University, Tianjin 300071, China. sunling@mail.nankai.edu.cn
Abstract:A simulation test was conducted in aquaria to study the responses of algal communities to different N/P ratios in urban water body. The water sample was taken from a small artificial lake in Tianjin, and its initial N/P ratio was adjusted to 0. 5:1,7.2:1, 25:1 and 50:1, respectively. The results showed that in high N/P ratio groups, the numbers of Chlorophyta species decreased, while those of Cyanophyta species didn' t change very much. The numbers of these two species were both decreased in low N/P ratio group. Algal biomass, cell density and chlorophyll a content in medium and high N groups were higher than those in control and high P groups. The mean value of chlorophyll a reached the highest (69.7 microg x L(-1)) in high N group, and was 54.3, 30.3 and 29.7 microg x L(-1) in medium N, control, and high P groups, respectively. At the mid-late stages of culture, green algae Dictyosphaerium pulchellum was dominant in high P group, while blue algae Phormidium tenue, P. corium, Lyngbya limnetica and Microcystis aeruginosa were dominated in high N/P ratio groups. Control group had the highest species richness, while medium and high N groups had the highest and lowest ecological species dominance, respectively.
Keywords:Phytoplankton  Community structure  N/P ratio  Urban water body
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《应用生态学报》浏览原始摘要信息
点击此处可从《应用生态学报》下载全文
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-23

京公网安备 11010802026262号