基于水质主成分分析的县级农村千人以下地下水水源地保护研究——以贵州省贵阳市花溪区为例

Study on the Protection of Groundwater Source Areas under 1000 Population in Countylevel Rural Areas Based on Principal Component Analysis of Water Quality--A Case Study of Huaxi District,Guiyang City,Guizhou Province

对贵州省贵阳市花溪区2022年农村千人以下饮用水水源地水质监测数据进行主成分分析,选取pH值、总硬度、硫酸盐、锰、化学需氧量(COD)、氨氮、硝酸盐氮为新的评判指标,分别代表花溪区的地下水硬度、农业面源、金属离子三个主要的地下水水源地环境保护问题。研究表明运用主成分分析法选取水质评价指标,大大减少工作量的同时避免了主观随意性,全面可靠地反映了花溪区地下水水源地的水质主要问题,水质主成分分析体系的构建对于县级农村千人以下地下水水源地保护具有指导意义。

Research on the protection of county-level rural groundwater source areas with a population of less than 1000 based on principal component analysis of water quality-taking Huaxi District,Guiyang City,Guizhou Province as an example,principal component analysis was conducted on the water quality monitoring data of rural drinking water source areas with a population of less than 1000 in 2022.pH value,total hardness,sulfate,manganese,COD,ammonia nitrogen,and nitrate nitrogen were selected as new evaluation index systems,representing the groundwater hardness environmental protection issues for the three main groundwater sources of agricultural non-point sources and metal ions.Research has shown that using principal component analysis to select water quality evaluation indicators greatly reduces workload while avoiding subjective randomness,comprehensively and reliably reflecting the main water quality issues of groundwater source areas in Huaxi District.The construction of the water quality principal component analysis system has guiding significance for the protection of groundwater source areas with less than a thousand people in county-level rural areas.