摘要
采用玉溪市环境监测站2003—2013年抚仙湖水质监测资料,应用Mann-Kendall检验法对主要水质指标的年际变化、月际变化特征及趋势,以及趋势变化的空间差异进行分析。结果表明:2003—2013年抚仙湖综合污染指数、总氮、透明度、叶绿素a等4项指标随时间呈上升趋势,但变化不显著。哨嘴综合污染指数上升较为明显一些,湖心叶绿素a存在显著的上升趋势。哨嘴、尖山两个测点总氮上升趋势较为突出一些,但变化不显著。
Mann- Kendall test method was adopted to analyze the water quality trend of Fuxian Lake based on the water quality data from 2003 to 2013. The annual and monthly changes of the main water quality indicators were studied as well as their spatial differences. The results showed that the aggregative pollution index number,total nitrogen,clarity,and chlorofucine- a have been increasing insignificantly. The aggregative pollution index number in Shaozui site illustrated an obvious growth. The chlorofucine- a in the center site of the lake has increased significantly. The total nitrogen in Shaozui and Jianshan showed a growing trend insignificantly.
出处
《环境科学导刊》
2014年第6期83-87,共5页
Environmental Science Survey
