基于不同评价方法的柳州市水质分析

本文采用单因子指数法、综合污染指数法及主成分分析法,对柳州市8处地表水水质数据进行综合评价。结果表明:单因子指数法计算结果均为Ⅱ类水质;综合污染指数法与单因子指数法计算结果趋势基本接近,但不能直接判断水质级别;主成分分析法可以分析水质的主要影响污染物。因此,综合考虑3种评价方法对地表水水质进行评价,可以获取更多的潜在信息。

Water quality analysis of Liuzhou City based on different evaluation methods

The single factor index method,comprehensive pollution index method and principal component analysis method were used to comprehensively evaluate the surface water quality data of 8 sites in Liuzhou.The results show that:the single factor index method of the calculation results areⅡclass quality;the result of the comprehensive pollution index method is close to that of the single factor index method calculation,but it can't judge the water quality directly;principal component analysis can be used to analyze the main pollutants affecting water quality.Therefore,the comprehensive evaluation of surface water quality of the three evaluation methods can obtain more potential information.