摘要
利用水质单因子评价和水质综合污染指数分别对汉江流域2007-2009年逐月实测数据进行水质状况及污染程度评价,分析了受污染区域的主要污染物指标和特征污染物指标。结果表明:汉江流域的水体水质总体良好,呈4段分布;汉江干流19个断面中有5个断面所在的河段受污染物影响相对较大,是主要受污染区域;主要污染物指标有7项,总磷出现频率最高,其次为5 d生化需氧量。从支流汇水、面源污染、生活污水3个方面分析了主要污染物的来源及影响程度。
Single-factor evaluation and comprehensive pollution index of water quality are used for water quality and pollution level assessment of Hanjiang River valley based on monthly monitoring data from 2007 to 2009.The results showed that the water quality of Hanjiang River valley is good on the whole and could be divided into four parts along the River flows.In the 19 sections of Hanjiang River main stream,5 sections＇ pollution level are relatively higher,the reaches between these 5 sections are the main polluted areas.There are 7 key pollution indicators,among which total phosphorus has the highest frequency of appearance,followed by BOD5.The sources and impacts of major pollutants are analyzed from three aspects：the water from tributaries of Hanjiang River,diffused pollution,domestic sewage.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
2010年第6期721-726,共6页
Journal of Huazhong Agricultural University
基金
湖北省环境保护厅科研项目(湖北省环境监测2009-302-001-002)资助
关键词
汉江
水质
污染物指标
时空差异分析
Hanjiang River
Hubei Province
water quality
pollution index
spatio-temporal changing analyse
