城市景观河流夏季污染状况及营养水平动态分析——以天津市津河为例  

Dynamic analysis of water quality and nutrition status of a landscape river——A case study on Jinhe River in Tianjin

作　　者：刘春光[1] 金相灿[2] 王雯[1] 邱金泉[1] 丁春丽[1] 孙凌[1] 庄源益[1] 

机构地区：[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,北京100012

出　　处：《环境污染与防治》2004年第4期312-316,共5页Environmental Pollution & Control

基　　金：国家 973计划资助项目 ( 2 0 0 2 CB412 3 0 1) ;教育部南开大学 -天津大学联合研究项目 ( AJ0 0 13 )

摘　　要：以 CODMn、氨氮、总氮、总磷和叶绿素 a等为主要指标 ,对天津市一条典型的景观河流——津河进行了调查分析。结果表明 ,津河水质介于地表水环境标准 ( GB3 83 8-2 0 0 2 )的 和 类之间 ,营养状态为重富营养 ,且在多个采样点出现蓝藻水华。水体中的各项指标的变化趋势为 ,CODMn与叶绿素 a都是在 7月达到最高 ,随后逐渐降低。总溶解性氮夏季变化曲线呈倒“S”形 ,7月最低 ,8月最高。河道上游总溶解性磷一直比较稳定 ,而下游在 8月上旬急剧升高。藻类演替过程大致为粉末微囊藻—皮状席藻—多种蓝藻。与改造之初相比 。Sampled from a typical landscape river and assayed the water since June to September 2003, COD\-\{Mn\}, NH\-3\|N, TN, TDN, TP, TDP and Chlorophyll a were used as main indices to assess water quality and nutrition status. According to Surface Water Environment Criteria of China (GB3838-2002), water of Jinhe River was considered as level Ⅳ to level Ⅴ, and it was heavily eutrophicated. At most sample sites, algal bloom was observed. COD Mn and Chlorophyll a reached the peak in July, and then decreased gradually. The curve of TDN along time was an S shape. TDP in upstream remained at a steady level, but which in downstream increased rapidly in August. The procedure of algal succession was \%Microsystis pulverea, Phormidium corium,\% and \%multi\|species of cyanophyceae. \%Compare to the beginning of the reconstruction, water quality was improved.

关 键 词：津河 河流 污染状况 地表水环境 富营养 氨氮 总磷 夏季 营养水平 演替过程 

分 类 号：X52[环境科学与工程—环境工程]