基于因子分析的浑河冲洪积扇地浅层地下水水质影响因素辨析

Distinguishing Significant Factors for Shallow Groundwater Quality in the Hunhe River Alluvial Fan Based on Factor Analysis

采集浑河冲洪积扇地浅层地下水样品218组,测试了33项水质指标。综合分析结果表明:研究区浅层地下水水质以弱酸性、低矿化、硬水为特征;HCO3.SO4-Ca.Mg、HCO3.SO4-Na.Ca、HCO3.SO4.Cl-Ca、HCO3.SO4-Na.Ca.Mg和HCO3-Ca这5种水化学类型占50%以上。应用SPSS软件,对33项浅层地下水水质指标进行因子分析,定量的筛选出主要影响因素,即基础因子、金属因子、农业因子和类有机因子这4个公因子,且4个公因子都与人类活动密切相关。

Based on 218 groundwater samples in the Hunhe River alluvial fan and 33 chemical compositions of samples,the final comprehensive results show that shallow groundwater quality is characterized by weak acid,low salinity and hard water.Five types of water account for over 50%.Application of SPSS,the factor analysis is used to analyze the thirty-three indexes reflecting the shallow groundwater quality.The significant factors,namely basic factors,the metal factor,agricultural factors and organic factors are quantitatively filtered out,and the four common factors are closely related to human activities.