中文摘要：

为实现江安河水资源的可持续利用，对污染源相对较多的武侯段水体水质情况进行研究。采集枯水期江安河武侯段6个监测断面水样，对水样中COD、BODs、NH3N、TP和硫化物等5个指标进行监测分析，并采用基于免疫进化算法优化的投影寻踪模型对监测结果进行评价。结果表明，江安河武侯段全部监测断面水质的投影值均大于《地表水环境质量标准》（GB3838--2002）中V类标准临界投影值，表明其水体水质级别为劣V类；硫化物、TP在投影方向中的排序最靠前，表明其已成为江安河武侯段水体最主要污染物，应优先治理。

英文摘要：

The water quality of Jiang＇an River in Wuhou District was evaluated so as to realize the sustainable utilization of water resource of Jiang＇ an River. Several water samples were collected from 6 monitoring sections of Wuhou District, and 5 indicators of COD, BOD5 , NH3N, TP and sulfide were monitored. Projection pursuit model （PP） optimized by immune evolution algorithm （IEA） was used to evaluat the water quality. The results showed that projection characteristic values of 6 monitoring sections all greater than that of threshold quantity of Grade V national groundwater environmental quality （GB 38382002）, indicated that the water quality of Jiang＇ an River in Wuhou Dis trict was worse than Grade V sulfide and TP ranking to the top of projection direction, means they were the main pollutants in Wuhou section of Jiang＇an River which need to be treated prioritized.