中文摘要：

结合近年的调查数据,分析了玄武湖可能存在的外源和内源污染。结果表明,入湖沟渠污染是玄武湖的主要外源污染,也是加重湖泊内源污染的诱发因素。因此,控制外源污染,改进截流措施,保证入湖水水质对今后的治理工作有很大的意义。

英文摘要：

Combined with the survey data in recent years,the possible exogenous and endogenous pollutions existed in Xuanwu Lake were analyzed.The results showed that in-lake conduit pollutions were main exogenous pollutions of Xuanwu Lake and were the inducing factors that aggravated endogenous pollutions of lake.Therefore,controlling exogenous pollutions,improving river closure measures and ensuring the in-lake water quality had a great significance for the governance in future.