| 北京城区河湖水质分析 |
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| 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[J].湖泊科学,2005,17(4):373-377. |
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| 作者姓名： | 杜桂森 吴玉梅 扬忠山 武佃卫 刘靖 |
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| 作者单位： | 首都师范大学生命科学学院北京,100037;北京市水环境监测中心北京,100038 |
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| 基金项目： | 北京市重大科技项目资助(H01211001011903) |
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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37867．82×10~4cells/L，其群落由蓝藻(Cyanophyta)、绿藻(Chlorophyta)、硅藻(Bcillariophyta)、甲藻(Pyrrophy— ta)、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．
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| 关 键 词： | 北京 城区河湖 富营养 微囊藻水华 |
| 收稿时间： | 2004-12-28 |
| 修稿时间： | 2005-04-28 |
Analysis of Water Quality on Urban Rivers and Lakes in Beying |
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| DU Guisen,WU Yumei,YANG Zhongshan,WU Dianwei and LIU Jing.Analysis of Water Quality on Urban Rivers and Lakes in Beying[J].Journal of Lake Science,2005,17(4):373-377. |
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| Authors: | DU Guisen WU Yumei YANG Zhongshan WU Dianwei and LIU Jing |
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| Institution: | DU Guisen~1 WU Yumei~2 YANG Zhongshan~2 WU Dianwei~2 LIU Jing~1 |
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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. |
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| Keywords: | Beijing urban rivers and lakes eutrophication water bloom of blue-green algae |
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