| 引用本文: | 杜桂森,吴玉梅,扬忠山,武佃卫,刘靖.北京城区河湖水质分析.湖泊科学,2005,17(4):373-377. DOI:10.18307/2005.0416 |
| DU Guisen,WU Yumei,YANG Zhongshan,WU Dianwei,LIU Jing.Analysis of Water Quality on Urban Rivers and Lakes in Beying. J. Lake Sci.2005,17(4):373-377. DOI:10.18307/2005.0416 |
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| 摘要: |
| 调研结果显示,2003年北京城区河湖(11个监测水体)总磷、总氮含量分别为0.142mg/L、1.481mg/L,已达到比较严重的富营养状态.北京城市河湖属于藻型水体,初级生产力主要决定于浮游藻类的群落结构与密度.河湖水体中浮游藻类密度为37867.82×104 cells/L,其群落由蓝藻(Cyanophyta)、绿藻(Chlorophyta)、硅藻(Bcillariophyta)、甲藻(Pyrrophyta)、隐藻(Cryptophyta)、黄藻(Xanthophyta)、金藻(Chrysophyta)和裸藻(Eugleniphyta)构成.群落中蓝藻占绝对优势 (89.54%).在近几年的夏秋季连续发生程度不同的微囊藻(microcystis)水华,对水体功能和城市景观造成了不良影响.主要原因是:(1)氮磷和有机物的污染,(2)给城市河湖补给的水量少,(3)河湖生态系统被损害,水体自净能力差.本文对如何改善北京城市河湖水质提出了建议. |
| 关键词: 北京 城区河湖 富营养 微囊藻水华 |
| DOI：10.18307/2005.0416 |
| 分类号: |
| 基金项目:北京市重大科技项目资助(H01211001011903) |
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| Analysis of Water Quality on Urban Rivers and Lakes in Beying |
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DU Guisen1, WU Yumei2, YANG Zhongshan2, WU Dianwei2, LIU Jing1
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1.College of Life Science, Capital Normal University, Beijing 100037, P. R. China;2.Monitoring Center of Beijing Water Environment, Beijing 100038, P. R. China
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| Abstract: |
| The research results indicate that total phosphorus and total nitrogen of urban rivers and lakes in Beijing had been attained separately 0.142mg/L and 1.481mg/L in 2003. The water bodies belonged to hyper-trophic type. The primary production was determined by community structure and cells density of phytoplankton. The urban rivers and lakes in Beijing were a water body of algal type. Phytoplankton cells density were 37867. 82×104/L and the community were constructed by Cyanophyta, Chloriphyta, BacilIariophyta, Cryptophytav Xanthophyta, Eugleniphyta, Pyrrophyta and Chrysophyta. 89.54% was blue-green algae in phytoplankton cominunity. The water bloom of blue-green algae had taken place continuously in summer and autumn in recent years. Its influence was not good to function of water body and city view. The primary factor was:(1) pollution of nitrogen, phosphorus and organic material; (2) water quantity to supply the rivers and lakes were short; and (3) the ecosystem of urban rivers and lakes were changed and self-cleaning capacity was reduced seriously. The proposal to improve water quality of urban rivers and lakes in Beijing were advanced in the paper. |
| Key words: Beijing urban rivers and lakes eutrophication water bloom of blue-green algae |
