乌江磷污染对三峡水库水质影响研究  

Study on influence of phosphorus pollution of Wujiang River to water quality in Three Gorge Reservoir

作　　者：卓海华[1] 兰静[1] 吴云丽[1] 范文重[1] 冯艳玲[1] 

机构地区：[1]长江水利委员会长江流域水环境监测中心,湖北武汉430010

出　　处：《人民长江》2014年第4期66-68,共3页Yangtze River

基　　金：国家"十二五"科技支撑计划资助项目(2011BAC12B02)

摘　　要：乌江是长江上游最重要的支流之一,近年来乌江磷污染对三峡水库水质的影响引起广泛关注。为分析乌江磷输入对三峡水库水质的影响,选取了三峡库区寸滩、清溪场以及乌江武隆3个断面,对水体磷含量变化进行研究。研究结果表明:2008年之前,乌江磷输入对三峡水库水质影响不显著,其后影响逐步显现,溶解态磷输入是影响三峡水库清溪场段水体磷含量变化的主要因素;2008年之前乌江总磷浓度变化与长江干流基本同步,具有较明显的水期特征,2008年之后乌江磷元素输入在平水期对三峡水库水质影响更为明显。Wujing River is one of the most important tributary in the upper stream of Yangtze River. In recent years, the prob-lem of phosphorus pollution of Wujiang River to Three Gorges Reservoir caused widespread concerns. 2 cross-sections of Cun-tan, Qingxichang in Three Gorges Reservoir and Wulong section on Wujiang River were selected to study the influence of phos-phorus pollution to the water quality of Three Gorges Reservoir. The study results show that before 2008, phosphorus pollution of Wujiang River to Three Gorge Reservoir was not significant, but after 2008, the influence became more obvious and the solute phosphorus was the principal influential factor to the phosphorus concentration variation at Qingxichang reach in Three Gorges res-ervoir;the variation of the total phosphorus concentration of Wujiang River, possessing obvious seasonal characteristics, was ba-sically synchronous with the mainstream of the Yangtze River before 2008, but after that, the phosphorus pollution of Wujiang River exerted more evident influences on Three Gorges reservoir in normal water season.

关 键 词：磷污染 水质影响 乌江 三峡水库 

分 类 号：X52[环境科学与工程—环境工程]