摘要
为了解阳澄湖的富营养化状态和影响阳澄湖水质的主控因子,基于2019年阳澄湖6个水质监测点位的10项水质指标的监测数据,运用综合营养状态指数法(TLI)评价了阳澄湖水体的富营养化程度,并应用主成分分析法(PCA)识别了影响阳澄湖水质的主控因子。研究表明,2019年阳澄湖的主要超标水质指标为TP和TN;2019年阳澄湖全湖呈中营养状态,各湖区综合营养状态指数TLI值大小依次为阳澄中湖>阳澄东湖>阳澄西湖;2019年阳澄湖的Chl-a、COD_(Mn)和SD指标对阳澄湖TLI值的影响最显著;2019年阳澄西湖水质受指标TN、NH_(3)-N、水温、DO的影响较大,阳澄中湖水质主要受指标水温、DO和TN的影响,阳澄东湖水质受指标水温、COD_(Mn)、DO、TN和Chl-a的影响较大。
In order to understand the eutrophication status of Lake Yangcheng and the main control factors affecting the water quality,based on the monitoring data of 10 water quality indices of 6 water quality monitoring points in 2019,the eutrophication degree was evaluated by the Trophic Level Index(TLI)method,and the main control factors affecting the water quality were identified by PCA.The results showed that the main over standard water quality indices were TP and TN.The water of Lake Yangcheng was in the middle nutrition state.The TLI value of each lake area was in the order of Yangcheng Middle Lake,Yangcheng East Lake and Yangcheng West Lake.Chl-a,COD_(Mn) and SD were the most influenced indices on the TLI value of Lake Yangcheng.The water quality of Yangcheng West Lake was greatly affected by TN,NH_(3)-N,water temperature and DO.Yangcheng Middle Lake was mainly affected by water temperature,DO and TN.Yangcheng East Lake was greatly affected by water temperature,COD_(Mn),DO,TN and Chl-a.
作者
武瑾
金文龙
陈亢利
WU Jin;JIN Wenlong;CHEN Kangli(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;Suzhou Institute of Environmental Science,Suzhou 215008,China)
出处
《环境保护科学》
CAS
2021年第2期86-91,共6页
Environmental Protection Science
基金
国家水体污染控制与治理科技重大专项(2017ZX07205-002)。
关键词
阳澄湖
富营养化
综合营养状态指数
主控因子
Lake Yangcheng
eutrophication
Trophic Level Index(TLI)
main control factors
