乌江水污染调查  

Water pollution investigation of Wujing

作　　者：张晟[1] 李崇明[1] 王毓丹[1] 张勇[1] 赵黎明 郑坚[1] 

机构地区：[1]重庆市环境科学研究院,重庆400020 [2]重庆市涪陵环境监测站

出　　处：《中国环境监测》2003年第1期23-26,共4页Environmental Monitoring in China

摘　　要：乌江是长江上游重要的支流之一。对比多年乌江水质监测结果 ,乌江水质总体能满足地表水 类水质要求。经调查 ,乌江近几年春季多次发生水体变黑 ,通过对乌江 2 0 0 1年 3月发生的水污染调查表明 ,总磷浓度从乌江上游到下游有逐渐降低的趋势 ,水体变黑的主要原因可能是由于城区江段有较高的 N、P背景 ,而乌江上游水库排水造成 ,水体中 chl-a含量按Wujing is one of the themost important branch of upper Yangtze. The water envirmental quality of Wujing is better than the national surface water quality standard Ⅱ at most times. During the past several years, the water body become black in spring By the pollution investigation in March of 2001,it indicates the concentration of Tp reduced from upstream to downstream The most possible reason is the high level of N,P and hypereutrophic upstream reservoirs discharging result in downstream river's Cyanobacteria blooms According to the OECD standard,the water body is eutrophication

关 键 词：乌江 水环境质量 富营养 水污染 

分 类 号：X522[环境科学与工程—环境工程]