佛山水道污染变化趋势及成因分析

The trend and cause analysis of the pollution of Foshan waterway

采用年际变化过程线及Spearman秩相关系数检验法对佛山水道污染趋势进行分析。结果显示,河段中游文沙桥段水质变化呈明显好转趋势,下游广佛交界沙尾桥附近平洲段的年际水质变化趋势不明显,但2008年后氨氮有下降的趋势。结合近年来佛山市政府开展的汾江河流域治理工程分析可知,佛山水道污染变化与产业结构调整及转移和河道水环境治理有较大关系。

In this paper,the annual change hydrograph and the Spearman*s Rank correlation coefficient test are adopted for analyzing the pollution trend in Foshan waterway.The result shows that the trend of the water quality of Wensha Bridge at the midstream of the Foshan waterway is obviously improved,while Pingzhou,near Shawei Bridge downstream,which is at the Guangfo junction,is less evident.However,there was a downward trend of ammonia nitrogen after2008.Considering the project of Fenjiang River watershed management carried out by the Foshan government recently,it comes to a conclusion that both the industrial structural adjustment and transfer and the river regulation have great influences on the variation of pollution in the Foshan waterway.