CAJ | 학술논문

分析了太湖1980-2011年富营养化水质指标的变化情况，同时利用水质富营养化评价结果，分析了2002-2011年不同湖区营养水平的变化特征。结果表明：太湖富营养化水质指标整体呈上升趋势，虽然TN和TP在1996年后开始降低，但仍处于较高水平；NH4＋-N和Chl-a的最高值出现在2006年；TN和NH4＋-N具有相似的月间变化特征，但是NH4＋-N的极值较TN提前一个月出现；CODMn和Chl-a呈单峰的月间变化特征，而TP的月间变化呈双峰特征。西部沿岸区和五里湖的水质改善明显，梅梁湖、竺山湖和南部沿岸区水质改善不明显，东部沿岸区和东太湖水质呈恶化趋势。太湖不同湖区富营养水质出现频次的月变化特征也非常明显。
분석료태호1980-2011년부영양화수질지표적변화정황，동시이용수질부영양화평개결과，분석료2002-2011년불동호구영양수평적변화특정。결과표명：태호부영양화수질지표정체정상승추세，수연TN화TP재1996년후개시강저，단잉처우교고수평；NH4＋-N화Chl-a적최고치출현재2006년；TN화NH4＋-N구유상사적월간변화특정，단시NH4＋-N적겁치교TN제전일개월출현；CODMn화Chl-a정단봉적월간변화특정，이TP적월간변화정쌍봉특정。서부연안구화오리호적수질개선명현，매량호、축산호화남부연안구수질개선불명현，동부연안구화동태호수질정악화추세。태호불동호구부영양수질출현빈차적월변화특정야비상명현。
The paper analyzed the variation situation of water quality indicators of eutrophication in Taihu lake from 1980 to 2011 .By use of the evaluation result of water quality eutrophication it analyzed the vari -ation feature of nutrition level in different lake areas from 2002 to 2011 .The results indicate that the eu-trophication indicators rise generally .Although TN and TP have decreased since 1996 , they are still on a relative high level.The maximum of NH4+-N and Chl-a appeared in 2006.TN and NH4+-N share a simi-lar monthly variation character , but the extreme value of NH 4+-N turn up one month earlier than those of TN.CODMn and Chl-a presents the unimodal character of monthly variation ,but that of TP presents doub-le-peaked .Improvement of water quality in west zone and Wuli lake is obvious , but the improvement in Meiliang lake, Zhushan Lake and south zone is not significant .The water quality in east beach zone and Dongtaihu lake exhibits a downtrend .There are also obvious variation characters of the monthly occur-rence frequency in the subzones .