汉江汉中监测断面加权欧式距离法水质综合分析

Comprehensive analysis of water quality in Hanzhong monitoring section of Hanjiang River by weighted Euclidean distance method

根据《地表水环境质量标准》(GB 3838-2002)评价标准,选用Ⅰ类水质标准作为原点,利用变异系数法得到各评级因子指标权重,计算待评价因子的变权欧式距离,建立水环境质量评价空间,对比分析2023年汉中1月~12月水质断面监测成果与水质评价标准的加权欧式距离,以此确定其水质级别,旨在探讨加权欧式距离法在地表水水质分析中的应用。通过加权欧式距离法评价水质级别,水质状况总体呈现偏好趋势。

According to the evaluation standard of'surface water environmental quality standard'(GB3838-2002),the class I water quality standard is selected as the origin,and the weight of each rating factor is obtained by using the coefficient of variation method.The variable weight Euclidean distance of the factors to be evaluated is calculated,and the space of water environment quality evaluation is established.The weighted Euclidean distance between the monitoring results of water quality section and the water quality evaluation standard in Hanzhong from January to December 2023 is compared and analyzed,so as to determine the water quality level.The purpose of this paper is to explore the application of weighted Euclidean distance method in surface water quality analysis.The water quality level was evaluated by the weighted Euclidean distance method,and the water quality status generally showed a preference trend.