CAJ | 학술논문

水质时空特征分析和污染源识别是里下河地区水资源管理与污染控制的重要内容之一。利用2011年里下河37个监测断面的10个水质指标数据，综合运用单因子污染指数法、综合水质标识指数法、主成分分析法及GIS软件分析了里下河地区水体污染物的时空分异特征及污染源解析。结果表明：汛期的综合水质要差于非汛期的综合水质，非汛期40．5％的断面水质为Ⅲ类水质断面，汛期70．3％的断面水质为Ⅲ类水质标准；无论是汛期还是非汛期，东北部的监测点水质劣于西南部的监测点水质，但是西南部的灌溉总渠沿线由于受洪泽湖的影响水质状况最好；汛期关键污染因子为来源于非点源污染和点源污染的高锰酸盐、总磷、化学需氧量，氨氮、五日生化需氧量，非汛期为来源于生活、生产污水排放的氨氮、总磷、化学需氧量、五日生化需氧量、锰。
수질시공특정분석화오염원식별시리하하지구수자원관리여오염공제적중요내용지일。이용2011년리하하37개감측단면적10개수질지표수거，종합운용단인자오염지수법、종합수질표식지수법、주성분분석법급GIS연건분석료리하하지구수체오염물적시공분이특정급오염원해석。결과표명：신기적종합수질요차우비신기적종합수질，비신기40．5％적단면수질위Ⅲ류수질단면，신기70．3％적단면수질위Ⅲ류수질표준；무론시신기환시비신기，동북부적감측점수질렬우서남부적감측점수질，단시서남부적관개총거연선유우수홍택호적영향수질상황최호；신기관건오염인자위래원우비점원오염화점원오염적고맹산염、총린、화학수양량，안담、오일생화수양량，비신기위래원우생활、생산오수배방적안담、총린、화학수양량、오일생화수양량、맹。
Temporal and spatial characteristics analysis of water quality and pollution source identification in Li-Xia River watershed are the important aspects for water quality management and pollution control . Ten water quality indexes from 37 monitoring sections in the watershed during 2011 was collected .This paper analyzed the temporal and spatial distribution feature of main contaminations and pollution source by use of the methods of single factor pollution index assessment , comprehensive water quality identifica-tion index and principal component analysis and GIS software .The results showed that the comprehensive water quality in non-flood period is better than that in flood ,while water quality in 40 .5%of the monito-ring sites in non-floodperiod is classified as grade Ⅲ,and that in 70.3% of the sites in flood period is classified as grade Ⅲ;the water quality in northeast is worse than that in southwest ,but the water quality in main irrigation canal is the best due to the impact of water quality in Hongze lake ;the main pollutants are CODMn, TP, CODCr, NH4+-N, BOD5 in flood period, while the main pollutants are TP, CODCr, NH+4 -N, BOD5 ,Mn in non -flood period from domestic and industrial wastewater .