降雨影响下的九龙江支流总磷变化特征及趋势

Variation Characteristics and Trend Analysis of Total Phosphorus in Jiulong River Tributary Under Rainfall

利用SPSS软件对2012~2017年九龙江北溪支流降雨量和总磷浓度关联、回归,及总磷变化趋势进行分析。结果显示,总磷最高浓度出现在5月(丰水期),最低浓度出现在10月(枯水期),2012~2014年丰水期降雨量对总磷浓度影响最为明显,其余时期影响不显著,支流总磷浓度有逐步改善的趋势。

The relation between rainfall and total phosphorus in Tributary of Jiulong River was analyzed during 2012 ～ 2017 by the usage of SPSS statistical analysis software. Its change was also discussed in this paper. It was found that total phosphorus content was highest in flood period and lowest in dry period,the different periods are May and October respectively. The most influence of rainfall on total phosphorus was found in flood period during 2012 ～ 2014. The rest of the time was not significant at the same time. The total phosphorus content of tributary shows a trend of becoming better.