摘要
[目的]研究黄河口滨海湿地4条入海河流污染物现状。[方法]在黄河口滨海湿地选取4条污染较为严重的河流(广利河、神仙沟、挑河和潮河),分别于2009和2010年5月(枯水期)、8月(丰水期)和11月(平水期)在这4条河流采集水样,测定水体营养盐、COD、叶绿素和石油类等指标,采用内梅罗指数和综合营养状态指数评价法进行污染物现状调查和评价分析,了解湿地整体河流水体质量现状及其对水生态环境带来的危害。[结果]黄河口4条主要入海河流水质整体污染较为严重,属于富营养化水平,主要污染因子为TN、TP、NH 4+-N和石油类;入海河流水体N、P含量过高造成了渤海湾水体富营养化,从而引发赤潮,使渤海近岸生态环境受到一定程度的破坏;与历史数据对比,河流水体氮磷污染明显加剧,石油类污染未见显著增长,整体水质污染形势不容乐观。[结论]该研究为黄河口滨海湿地及近岸海域水体的保护和利用提供理论依据。
[Objective] The study aimed at analysing water pollution of four rivers in coastal wetland of Yellow River estuary.[Method] Taking four seriously polluted rivers（namely Guangli River,Shenxiangou River,Tiao River and Chao River） in coastal wetland of Yellow River estuary as study objects,water samples were collected from the four rivers in May（dry period）,August（wet period） and November（normal period） in 2009 and 2010 respectively,then pollution indices like nutritive salts,COD,chlorophyll,petroleum,etc.were measured.Afterwards,the status quo of water pollution was assessed based on Nemero index and comprehensive trophic level index（TLI）,so as to find out the integral status quo of water quality of rivers in the wetland and the damages to aquatic ecological environment.[Result] On the whole,water pollution of four rivers in coastal wetland of Yellow River estuary was serious,being in the eutrophication state,and the main pollutants were TN,TP,NH＋4-N and petroleum.In addition,excessive N and P in the four rivers resulted in water eutrophication of Bohai Bay,so leading to ride tide,which destroyed the coastal ecological environment of Bohai Sea.Moreover,compared with historical data,water pollution by nitrogen and phosphorus became more serious,while there was no obvious aggravation in the water pollution by petroleum.In a word,water pollution wasn＇t optimistic on the whole.[Conclusion] The research could provide theoretical bases for the protection and utilization of river water in coastal wetland of Yellow River estuary and coastal sea area.
出处
《安徽农业科学》
CAS
2012年第1期441-444,共4页
Journal of Anhui Agricultural Sciences
基金
国家海洋公益性行业科研专项(200805070
200905009-5
200905020)
关键词
黄河口滨海湿地
入海河流
水质污染
现状调查
内梅罗指数
综合营养状态指数
Coastal wetland of Yellow River estuary
Rivers flowing into the sea
Water pollution
Investigation on the status quo
Nemero index
TLI
