清水江水质评价与变化趋势的显著性分析研究

以贵州省黔南州清水江监测数据为例,采用五元联系数方法进行水质评价.分析表明,该方法是一种客观有效的评价方法,评价茶园、兴仁桥两个断面均优于环境规划类等级.针对TP、氟化物指标浓度严重超标问题,采用Daniel趋势检验法测试2006年-2010年指标浓度变化的显著性,结果说明：5年内清水江重安江大桥河段TP、氟化物浓度降低的趋势显著性较高;而兴仁桥河段TP浓度降低的趋势显著性偏低;氟化物浓度几乎不变,变化不显著.由此说明,黔南州清水江水质得到改善.

Water Quality Evaluation and Trend Significance Analysis of Qingshuijiang River

Taking the monitoring data of Qingshuijiang River in Qiannan for example, this paper evaluated the water quality by using five - element connection method. Analysis indicates that this is a kind of objective and effective evaluation method. The evaluation results of river sections of Chayuan and Xinren bridge are better than the standard. The concentration of TP and fluorid water - quality index seriously exceeds the standard. The significant analysis of TP and fluorid water - quality index were tested by Daniel trend analytical method from 2006 to 2010. It turned out that concentration of TP and fluorid showed a significant declining trend in Chonganjiang bridge section, conversely, the concentration of TP has significantly lower degradative and the concentration of Fluorid remained steady in Xinren bridge section. The water quality made some improvement in Qingshuijiang River.