根据2010—2012年的 COD、BOD5、NH3－N、TP 和 Cr6＋的例行监测数据，采用动态贴近度法，对徒骇河干流13个监测点进行优化。分别计算丰水期、平水期和枯水期的最优点和最劣点的距离，从而计算出最优贴近度值。利用 t 检验和 F检验对优化结果进行准确度和精确度检验，结果表明，优化后的8个监测点的监测数据可以代表整个干流的水质状况。%In order to properly set up water quality monitoring sections for the mainstream of the Tuhaihe River,the dynamic similari-ty method was used to optimize a total of 13 water quality monitoring sites along the river based on the monitoring data of COD, BOD5 ,NH3 -N,TP,and Cr6 + from 2010 to 2012.The optimal similarity was calculated by computing the distances between the opti-mum sites and the worst sites during the abundant water period,normal water period,and low water period.To test the accuracy and precision of the measurements,the optimization results were verified by the T-test and F-test.The results showed that 8 out of the 13 monitoring sites that were optimized were able to reflect the water quality of the mainstream of the Tuhaihe River,and that the dy-namic similarity method was feasible to optimize the water quality monitoring sites of the river.
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