对应分析方法在白城市洮北区地下水水质评价中的应用

Application of correspondence analysis method in the assessment of groundwater quality in Taobei area of Baicheng City

应用对应分析方法研究了白城市洮北区地下水水质状况和影响水质的主要因素,确定了主要的污染因子和污染原因。结果显示:白城市洮北区地下水污染农村最轻,市区次之,城郊结合部最严重,主要污染因子是硝酸盐和亚硝酸盐,水质污染来源是垃圾渗滤液和生活污水等。将对应分析结果与综合指数法评价结果进行对比发现,两种方法对水样点水质污染程度的分区基本一致,但对应分析方法综合考虑了样本和变量之间的关系,并根据变量的载荷大小和变量与样本水质分区间的关系,确定出研究区内各水质分区的主要污染因子。

The correspondence analysis method was applied to study the groundwater quality status and the main factors which affect the groundwater quality in Taobei area of Baicheng City, and the cause of pollution and the main pollution factors were determined. The status of groundwater pollution in Taobei area of Baicheng City was that the least serious area was in rural, followed by the urban areas, and the worst area was around the suburbs. The main pollution factors which affected this area were nitrate and nitrite, and the sources of water pollution were landfill leachate and sewage. Comparing the results from correspondence analysis method with the results by comprehensive index method, it could found that the division of water pollution degree by two methods was generally the same, but the correspondence analysis method took the relationship between the sample and variables into account, and identified the main pollution factors in each zone according to the quantity of the variable load and the relationship between variables and water quality zone.