基于改良综合水质标识指数法的松花江流域(吉林省)水质评价

为了实现对水质简单而全面的定性以及定量评价,采用改进的水质标识指数法对松花江流域吉林省段在2005-2014年的水质进行评价。结果表明高锰酸盐指数是影响水质的主要污染指标,但综合水质基本都能满足功能区的要求;同时应用环保部推荐的Speraman秩相关系数法对3个断面10 a间的水质变化趋势进行研究,结果表明各断面水质在2005-2014年变化均呈显著好转趋势。该评价方法不仅能对水质单项及综合指标类别进行比较,也可以在同一类别中进行水质好坏的比较,具有较高的应用价值。

Evaluation of Water Quality in the Jilin Province Songhuajiang River Basin Based on Improved Identification Index

In order to achieve comprehensive and simple qualitative and quantitative water quality evaluation, the improved water quality identification indexes method is adopted to evaluate the water quality of Jilin province section of Songhua river basin based on the data of six segments during 2005-2014.The results show that the potassium permanganate index is the main pollution indicators, but the comprehensive water quality can meet the requirements of functional areas.At the same time, the Spearman rank correlation coefficient method is applied to analyze the water quality variation trend of the three segments during the past ten years.The results show that the water quality of all segments is improved intensively.This method can be used not only for single and composite indicator type comparison, but also for the comparison in the same category water quality, as well as has higher application value.