太原市迎泽湖富营养化灰色关联法分析

Eutrophication Evaluation of Yingze Lake with the Gray Correlation Analysis Method

针对湖泊富营养化问题,对太原市迎泽湖进行资料收集和长期水体监测,选定透明度(SD)、高锰酸钾指数(CODMn)、总磷(TP)、总氮(TN)、叶绿素a(Chla)5个指标来分析迎泽湖富营养化状况,并应用灰色关联法建立富营养化综合分析模型,定量化地反映了迎泽湖富营养化现状,得出迎泽湖处于中-富营养化、富营养化状态的结论。本研究为迎泽湖富营养化的规划治理提供了理论参考,具有一定的使用价值。

Aiming at lake eutrophication problem and on the base of data gathering and long-time water quality monitoring,this paper established an overall eutrophication evaluation model by grey correlation method to quantitatively reflect the existing condition and change tendency of water quality in Yingze Lake.By collecting and analyzing the five factors,chemical oxygen demand,transparency,total phosphorus,total nitrogen,chlorophyll-a,this paper drew the conclusion that the Yingze Lake is in middle eutrophication and eutrophication phases.So this study offers reference theory and technology for layout of shallow landscape lake of city in arid and semi-arid climate.It has an value of practical application.