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引用本文:荆红卫,华蕾,孙成华,郭婧.北京城市湖泊富营养化评价与分析.湖泊科学,2008,20(3):357-363. DOI:10.18307/2008.0315
JING Hong-wei,HUA Lei,SUN Cheng-hua,GUO Jing.Analysis on urban lakes' eutrophication status in Beijing. J. Lake Sci.2008,20(3):357-363. DOI:10.18307/2008.0315
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北京城市湖泊富营养化评价与分析
荆红卫, 华蕾, 孙成华, 郭婧
北京市环境保护监测中心, 北京 100044
摘要:
根据2006年对北京市区不同功能重点湖泊水体进行的逐月监测,采用综合营养状态指数法,对湖泊富营养化现状进行了评价.结果表明,水源湖泊目前处于中营养状态,但在夏秋季由于温度和光照等气象条件的影响,可接近轻富营养;重要景观湖泊处于轻—中度富营养;一般景观湖泊处于中度—重度富营养状态.湖泊富营养程度随季节变化明显:盛夏和初秋形成高峰,冬、春季最低,总磷、总氮含量与叶绿素a呈显著正相关关系,尤其总磷与叶绿素a的相关性更加显著.由于城市排水管网不健全,雨污分流不彻底,暴雨期大量溢流生活污水直接向湖泊补水河道中排放;湖泊补水沿线降雨径流产生的非点源污染较严重;加上污水处理厂再生水水质较差,加重了补给湖泊富营养程度.
关键词:  北京  城市湖泊  富营养化
DOI:10.18307/2008.0315
分类号:
基金项目:北京市科委项目(Z0005184040991)资助.
Analysis on urban lakes' eutrophication status in Beijing
JING Hong-wei, HUA Lei, SUN Cheng-hua, GUO Jing
Beijing Municipal Environmental Monitoring Center, Beijing 100044, P.R.China
Abstract:
Referring to the different water body function, the survey of water quality was carried out on major urban lakes of Beijing monthly in 2006. According to TLI method, the state was evaluated on the basis of measurement result: lakes of drinking water source were mesotropher; lakes of major landscape water were light-middle eutropher; lakes of ordinary landscape water were middle-hyper eutropher. The eutrophic characteristics and its changing trend were analyzed. The causes were analyzed. The measures and suggestions were expounded on different water body function for improving water quality and reducing eutrophication.
Key words:  Beijing  urban lakes  eutrophication
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