基于水质综合污染指数的Spearman秩相关系数法分析晋江流域水质自动监测的适用性

The Applicability of Automatic Water Quality Monitoring in Jinjiang River Basin Analyzed by Spearman Rank Correlation Coefficient Method based on Water Quality Comprehensive Pollution Index

运用基于水质综合污染指数的Spearman秩相关系数法,对晋江流域4个国控断面的水质自动监测数据进行研究分析,提出了晋江流域水质自动监测的适用性,结果表明:①晋江流域水质自动监测具有较高适用性,能够准确反映断面的水质状况和变化趋势;②晋江流域水质自动监测适用性高低主要与断面的水面宽度以及考核目标有关,水面宽度越小,考核目标越低,适用性越高,反之则越低。③晋江流域中主要污染物为总磷或氨氮的断面,采用自动监测数据进行水质评价可以降低随机误差的影响,并且评价结果更加准确客观。

Spearman rank correlation coefficient method based on water quality comprehensive pollution index was used to examine the applicability of the automatic monitoring data of water quality of four national controlled sections in Jinjiang River basin.The results showed that the automatic monitoring of water quality in the Jinjiang River basin has high applicability.It can accurately reflect the water quality status and change the trend of cross section.The applicability of automatic water quality monitoring in Jinjiang River basin was mainly related to the width of the water surface and the assessment target of the section,the smaller the width of the water surface,the lower the assessment target,the higher the applicability,and vice versa.The main pollutants in the Jinjiang River basin were the sections of dissolved oxygen,total phosphorus,and ammonia nitrogen,using automatic monitoring data for water quality evaluation can reduce the impact of accidental errors,and the evaluation results were more accurate and effective.