摘 要：
为探讨贡湖湾(望虞河以西)河口区域的水质状况,采用WQI(水质综合指数)在夏季(2017年8月)和冬季(2018年3月)对其8个河口区域的31个点位进行了水质状况评价,并计算WQImin(最小水质综合指数),识别主要水质因子.WQI将水质状况分成5个等级进行评价,即WQI> 90为非常好,70
作 者：
LIU Fu-xing;JIANG Yuan;WANG Jun-li;FU Zi-shi;QIAO Hong-xia;Shanghai Academy of Agricultural Sciences;Shanghai Engineering Research Centre of Low-carbon Agriculture;Wuxi Hengcheng Water Conservancy Engineering Construction Co.,Ltd.;
关键词：
Gonghu Bay;;Estuary;;Water quality;;WQI
摘 要：
The study assessed the actual water situation in the estuarine area of Gonghu Bay (west of Wangyu River),Lake Taihu,China,based on the status of water quality using WQI (water quality index)methods,and the WQI_(min) (minimum water quality index) was also calculated to identify the main water quality factors. In the summer (August 2017) and winter (March 2018) seasons,8 estuarine areas were tested at 31 sampling sites,which included lakes and rivers. The WQI was divided water quality into five grades,WQI > 90 was very good,70 < WQI≤90 was good,50 < WQI≤70 was medium,25≤WQI≤50 was bad and WQI < 25 was very bad. The results indicated that the water quality had significant difference on season in the study area,the overall water quality status of summer were medium (WQI: 54. 62),and in winter,the overall status were good (WQI: 73. 63). Differences were also observed between the estuarine areas of Gonghu Bay. In summer,the water quality between the two sides of sluices in some estuaries were obviously different,the status of river-side were better than that of lake-side,and the estuarine area of Xiaoxi River had relatively worse water quality status (WQI: 47. 50). In winter,Renzi Gang had the minimum WQI,which was 62. 84. TP,TN,DO and COD_(Mn) used in the WQI_(min) were the most effective parameters in our study. According to the study,the water situation in the estuarine area of Gonghu Bay (west of Wangyu River) had obvious spatio-temporal differences,and the grading evaluation of WQI and the identification of key factors can provide a valuable contribution to inform decisionmaking for the management of water environments by providing the actual water situation of the estuarine area of Gonghu Bay and other similar estuaries.
