伊犁地区部分河流的水质标识指数

Water Quality Identification Index in some Rivers of Yili District

通过2004—2006年对伊犁地区的特克斯河、伊犁河的水质调查及水质标识指数和综合指数(WQI)的计算发现,DO、COD、TN、NH3-N、TP 5项指标在10个断面的空间分布上伊宁市区的2个断面水质最差,在时间上属8月最差,水质主要污染指标的排序依次为TP、TN、COD和NH3-N。

The survey of water quality on Tekes River and Yili River in xinjiang was carried out from August 2004 to August 2006. Five water quality items which were dissolved oxygen, chemical demend oxygen, ammonia nitrogen, total nitrogen and total phosphate, were used to calculate the single factor water quality identification index of each item and the comprehensive water quality identification index （WQI） of 10 cross sections. As to the spatial distribution, water quality became worse when the river flowed into the urban area of Yining city. As to the time distribution, the water quality was the worst in August. The main pollutants were TP, TN, COD and NH3 - N.