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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.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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北京城区河湖水质分析
杜桂森1, 吴玉梅2, 扬忠山2, 武佃卫2, 刘靖1
1.首都师范大学生命科学学院, 北京 100037;2.北京市水环境监测中心, 北京 100038
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)
Analysis of Water Quality on Urban Rivers and Lakes in Beying
DU Guisen1, WU Yumei2, YANG Zhongshan2, WU Dianwei2, LIU Jing1
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
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
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