基于集对分析法的河流监测断面设置合理性研究

A Study on the Rationality of Setting River Monitoring Sections Based on Set Pair Analysis

采用基于集对分析法的河流监测断面水质判别方法，对陕西省三原县清峪河2006～2008年的3个断面水质状况进行了计算和判别，并根据河流监测断面设置的相关要求，以及案例区域的实际情况，对3个监测断面设置的合理性进行了分析和研究。结果表明，由于水质污染状况不断加重，以及周边环境已发生较大变化，陕柴西监测断面已不能满足环境监测等多方面要求，需要在实际调查和相关要求之下进行调整和优化；清峪河大桥断面和王店断面由于在3年间水质污染状况变化不大，并且，周边环境未发生较大变化，所以现阶段监测断面的设置是基本合理的，不需要进行调整，但是随着三原县污染源特征及位置的不断变化．在未来一段时间内，这两处监测断面的位置仍需进一步的调整和优化。

The water quality at three sections of Qingyu River in Sanyuan County of Shaanxi Province from 2006 until 2008 was calculated and discriminated with a water quality discrimination method of river monitoring sections based on set pair analysis, and the rationality of setting those three monitoring sections was analysed according to relevant requirements for siting river monitoring sections and actual situations of the case region. The results showed that Shaanchaixi section could not meet the requirements for environmental monitoring and other aspects because of water pollution becoming severer and surrounding environment changing greatly, so that its readjusting and optimising would be needed through actual investigation. In addition, because of a little change in the water pollution status and no great variations in the surrounding environment within those three years, the layout of Qingyu River Bridge and Wangdian monitoring sections was basically reasonable and did not need to be readjusted at present. However, the location of those two sections may still be required to further readjust and optimise in the future according to any changes in characteristics and locations of pollution sources in Sanyuan County.