曹娥江三典型支流的水质对比研究  

Comparative Study of Water Quality of Three Typical Tributaries Within Cao-e River System

作　　者：金树权[1] 吕军[1] 陈丁江[1] 沈晔娜[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310029

出　　处：《水土保持学报》2006年第5期121-125,共5页Journal of Soil and Water Conservation

基　　金：国家"973"计划项目(2002CB410807);国家自然科学基金项目(40571070)

摘　　要：根据对曹娥江水系三典型支流2004年逐月进行水质监测分析,通过时空变异两个角度对这3条支流的水质进行了对比研究。结果表明:(1)以农业非点源污染为主的山溪性河流水质最好;以农业非点源污染为主的河谷平原河流水质次之,但水体富营养化现象比较严重;受工业废水和城市生活污水污染的支流河流水质最差,有机物和氮磷指标严重超标。(2)3条支流中4个化学指标(NO3--N、NH4+-N、TP、CODM n)在各个雨期之间浓度变化具有十分相似的规律。NO3--N浓度在丰水期较高,在枯水期较低;NH4+-N浓度在丰水期较低,枯水期较高;TP浓度各个雨期之间都变化不大,相对稳定;CODM n浓度在各个雨期之间存在变化,但都没有明显的规律。Water quality parameters were monthly monitored in three tributaries of Cao-e River system, and spatial-temporal variations were comparative studied among those rivers. The results showed that： （1）The river dominated by agricultural nonpoint pollution through mountainous area had best water quality, the river dominated by agricultural nonpoint pollution through agricultural plain had secondary water .quality with eutrophication, and the river dominated by industrial and domestic waste water had worst water quality with organic matter and nutrients seriously exceed standard. （2） Four chemical parameters, including NO3^＋ - N, NH4^＋ - N, TP and CODMn, in three tributaries had similar trends among three seasons. NO3^＋-N concentrations were highest in wet season and were lowest in dry season, while NH4^＋- N concentrations were highest in dry season and were lowest in wet season. TP concentrations relatively stabile, and had little variation among three＇ seasons. CODMn had variation among three seasons, but have no apparent trends.

关 键 词：曹娥江 支流 河流水质 对比研究 

分 类 号：X824[环境科学与工程—环境工程]