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
出处
《中国环境监测》
CAS
CSCD
北大核心
2003年第1期23-26,共4页
Environmental Monitoring in China
关键词
乌江
水环境质量
富营养
水污染
Wujiang
water enviromental quality
eutrophication
