京杭运河常州段水质变化趋势及相关性分析

Water Quality Trends and Correlation Analysis of the Beijing-Hangzhou Grand Canal at Changzhou Section

以京杭运河常州段水质监测数据为基础,研究了2010年至2014年近五年的沿线水质变化趋势,并借助SPSS软件对不同水期的高锰酸盐指数、氨氮和总磷的Pearson相关性进行了分析。结果表明:近五年京杭大运河常州段水质状况总体良好,主要污染指标为氨氮和总磷;不同水期水质变化显著,丰水期较枯水期和平水期水质好;高锰酸盐指数、氨氮和总磷显著相关,Pearson分析的显著性在0.01水平上。研究为京杭运河常州段的水质改善提供参考。

According to the monitoring data of water quality of the Beijing - Hangzhou Grand Canal at Changzhou section, the trend of the water quality variation in the recent five years（2010 to 2014）was studied. With the help of SPSS software, Pearson correlations among permanganate index, ammonia nitrogen and total phosphorus at the different water periods were analyzed. The results showed that the water quality of the Beijing - Hangzhou Grand Canal at Changzhou section was generally good over the past five years. The main pollution indicators were ammonia nitrogen and total phosphorus. The water qualities were different significantly in different seasons, particularly water quality at wet season being better than the dry season and normal season. The permanganate index, ammonia nitrogen and total phosphorus were significantly correlated with Pearson analysis at 0. 01 level. The study provides a reference for water quality of the Beijing - Hangzhou Grand Canal at Changzhou section.