由于影响水环境质量的因素较多,而水质系统是由多维因子组成的复杂系统,每一因子从某一方面反映了水体质量状况,各因子对环境污染又有着不同的贡献率,并且因子间具有不同程度的相关性,依据它们作综合评价有一定难度.所以,做好水环境质量评价工作,选取一种有效而又实用的方法是非常重要的.利用水质综合评价的主成分分析方法,借助spss软件对石家庄市民心河2010年18个典型断面的水质污染程度进行定量化评价,实证分析的结果表明,新石南路断面水质最差,联盟西路与西二环交叉口监测断面水质污染最轻.%Many factors affect the water environmental quality and the water quality system is a very complex system,which is made up of many different multi-dimensional factors.Every factor reflects the water quality from one aspect and causes more or less environmental pollution.To a certain degree,the factors are related to each other,so it is hard to make a comprehensive assessment based on these factors.Therefore it is very important to find an effective and practical method to make the water environmental quality assessment.With the aid of spss software,by applying the major element analysis method in water quality comprehensive assessment,the author have made a quantitative assessment about water pollution of Minxinhe of Shijiazhuang City by choosing 18 typical water sections in 2010.The findings of the practical analysis show that water quality at Xinshinan Road section is the worst and the water section at the crossing of Lianmengxi Road and the West Second Ring Road is the least polluted.
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