模糊数学方法在鄱阳湖水质评价中的应用

Application of fuzzy mathematics method in evaluating water quality of Poyang Lake

针对鄱阳湖水质情况,采用了14个具有代表性的监测站点的监测资料,利用模糊数学法对其水质变化情况进行了现状分析及趋势预测.结果表明:应用模糊数学方法能够更客观地反映水体环境的质量状况.同时发现,鄱阳湖的入、出湖及湖区水质整体优良,且有好转趋势;污染物进入湖泊南面后经过稀释、降解,下游水质好于上游;湖泊主要污染物为氨氮、总磷;污染较为严重的站点为乐安河口.

Aimed at the water quality condition of Poyang Lake and based on the monitoring data of 14 representative monitoring stations, the current situation of water quality change is analyzed and the trend of water quality change is forecasted by the fuzzy mathematics method. The results showed that the fuzzy mathematics method can more objectively reflect the situation of water environment quality, also found that the water quality of Poyang Lake, into Poyang Lake and outlet of Poyang Lake is overall good and have the improved trend. After the pollutants into the southern lake was diluted and degraded, the water quality in the downstream is better than upstream. The main pollutants in this lake are ammonia nitrogen and total phosphorus. The site of serious pollution is the outlet of Lean River.