基于主成分分析法的白潭湖水质污染综合评价研究

Comprehensive Assessment of Water Pollution in Baitan Lake Based on Principal Component Analysis

白潭湖是黄冈市城区黄州区最大的湖泊,其水质在城市发展过程中不断恶化。白潭湖水质评价对后续水污染治理有重要意义。基于2022年白潭湖丰、枯水期的水质监测数据,采用主成分分析法和反距离权重插值法分别评价了白潭湖各主要污染指标的贡献率和水质空间分布。结果表明:影响白潭湖丰水期水质的第一主成分为城乡生活污染源;影响白潭湖枯水期水质的第一主成分为内源;白潭湖丰水期水质污染空间分布情况与枯水期有较大差异,说明湖泊水位以及雨季对湖泊水质有很大影响。

Baitan Lake is the largest lake in the Huangzhou District of Huanggang City,and its water quality is deteriorating with the development of the city.The water quality assessment of Baitan Lake is of great significance for water pollution control.Based on the water quality monitoring data of Baitan Lake in the wet and dry seasons in 2022,the principal component analysis method and inverse distance weight interpolation method were used to analyze the contribution rate of leading pollution indicators and the spatial distribution of water quality in Baitan Lake,respectively.The results show that the urban and rural domestic pollution sources are the first principal components affecting the water quality of Baitan Lake in the wet season.The first principal component affecting the water quality of Baitan Lake in the dry season is endogenous.The spatial distribution of water quality pollution in Baitan Lake in the wet season is quite different from that in the dry season,which shows that the water level of the lake and the rainy season great influence the water quality.