为了获得青岛某住宅小区内景观湖水质全年变化规律,并确定最佳换水时间,采用国标法及行业标准法检测该小区景观湖及其水源的全年水质变化.结果表明:景观湖水各水质指标全年波动明显,均受季节和降水情况影响,在降水丰沛的8-10月份水质较好;除pH全年符合景观水质标准外,其余指标均有月份超标;除COD浓度较高外,其余指标9-11月均较低,水质较好;水源白沙河的水质多在降水丰沛的9、10月份水质较好,综合看来,9-10月份为每年的最佳换水时间.%In order to obtain the water qualityannual variation of landscape lakes in a residential district in Qingdao and determine the best exchange time of lake water, the annual water quality variation of the lake and its headwaters were investigated by the national standard method and the industry standard method.The result showed that the annual water quality indexes of the landscape lake fluctuated greatly, which were affected by season and precipitation, in detail, the water quality were preferable in 8-10 months because of abundant rainfall.In addition to pH value, the other indexes exceeded the water quality standard of landscape in some months.COD concentration was higher but the other indexes were lower in 9-11 months, so the water quality was better in these months.The water quality of Baisha River was preferable in 9-10 months with abundant rainfall, on the whole, 9-10 months was the best exchange time of lake water.
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