通过对东平湖5个地区的实地调查和水质分析,结果表明:东平湖水p H值为7.62?7.89,湖水略呈碱性;湖水总硬度为3.56?4.65 mmol/L,湖水为极软水;湖水高锰酸盐指数、总氮和总磷3项污染指标存在一定程度的季节变化,9月份湖水高锰酸盐指数和总氮明显较5月份偏高,而9月份湖水总磷含量普遍低于5月份。观测结果表明,东平湖湖区水质有明显改善。 Through the field investigation and water quality analysis in 5 areas of Dongping Lake, the results show that the p H value of Dongping Lake is 7.62 ~ 7.89, the lake water is slightly alkaline, the lake water hardness is 3.56 ~ 4.65 mmol / L, the lake water is extremely soft water, Permanganate index, total nitrogen and total phosphorus three pollution indicators there is a certain degree of seasonal changes in September lake permanganate index and total nitrogen was significantly higher than in May, and in September the lake was generally lower than the total phosphorus May. The observation shows that the water quality in Dongping Lake area has been significantly improved.