Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, China, Dalian 116023, People's Republic of China; Dalian Ocean University, #52. Heishijiao Street, Shahekou District, Dalian 116023, People's Republic of China.
Key Laboratory of Equipment and Informatization in Environment Controlled Agriculture, Ministry of Agriculture, Hangzhou 310058, People's Republic of China.
Mar Pollut Bull. 2020 Aug;157:111285. doi: 10.1016/j.marpolbul.2020.111285. Epub 2020 May 29.
In the present study, a modified water quality index (WQI) was used to evaluate the water quality in south coastal aquaculture area of Dalian, Liaoning Province, China. Four main culture areas with 40 sampling stations were covered. Ten variables were selected for principal component analysis/factor analysis (PCA/FA), and the major factors affecting water quality were identified. The PCA results showed that these factors were mainly associated with nutrients, natural conditions and organic matter. The modified WQI was calculated to identify the classes of water quality and to evaluate the spatial and temporal changes among the sampling areas. The results revealed that the water quality generally performed the worst in June, and the best in October. The modified WQI proved to be a useful method for water quality classification and characterizing spatial and temporal changes in Dalian aquaculture areas.
本研究采用改进的水质指数（WQI）评价了中国辽宁省大连南部沿海养殖区的水质。该研究涵盖了四个主要养殖区的 40 个采样站。选择了 10 个变量进行主成分分析/因子分析（PCA/FA），以确定影响水质的主要因素。PCA 结果表明，这些因素主要与营养物质、自然条件和有机物有关。计算改进的 WQI 以确定水质类别，并评估采样区域的时空变化。结果表明，水质总体上在 6 月最差，10 月最好。改进的 WQI 被证明是一种用于水质分类和描述大连养殖区时空变化的有效方法。
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