基于变权欧式距离模型的阜新农村地下水质综合评价

为克服综合评价模型中因子权重定量的不确定性与主观性,体现出同一地下水质因子在不同地下水水源地评价单元中存在的差异性,采用地下水质因子污染贡献率确定各地下水质因子的权重,改进了欧式距离模型,建立了农村地下水源地水质评价的变权欧式距离模型,并以阜新市典型乡镇后新秋镇、苇子沟乡、哈尔套镇3个农村地下水水源地为评价对象,将2013年阜新市农村地下水水源地水质实测数据、标准数据规范化,运用数轴模型距离尺度进行地下水水质分割。评价结果与F值法结果基本吻合,变权欧式距离模型的距离尺度能够提高地下水水质评价结果的定量灵敏度,变权欧式距离模型具备一定的环境参数评价充分性、一致性及有效性。

Quality Assessment of Country Underground Water Source of Fuxin Area, Liaoning Province, China Based on Continental Distance Model with Varying Weight

Euclidean Distance Model with varying weights for rural underground water quality evaluation was established for Fuxin Area, Liaoning Province, China based on the improved underground water source quality assessment model with varying weights. At the same time, rate of pollution contribution for different environmental groundwater quality factors were used for weights determining. Relative data of underground water of Fuxin area in 2013 were also employed for calculation and analysis. Results show that evaluation results of this model possesses excellently consistent by using F value method. Meanwhile, variable weight distance measure of the Euclidean distance model can improve quantitative sensitivity of the groundwater quality evaluation.