中文摘要：

为研究克鲁伦河污染物输送对呼伦湖水质的影响,以克鲁伦河水体为研究对象,对水中氨氮、总氮、总磷及化学需氧量（COD）进行监测,分析了其水质变化的主要原因并研究了各指标之间的相关性,利用水污染指数法确定了水体中主要的污染因子。结果表明：克鲁伦河所有监测断面的水质等级均为劣V类,主要污染物为总氮及化学需氧量。水体中氨氮和总氮的相关系数为0.850,呈极显著的正相关关系,化学需氧量与总磷之间的相关系数为0.691,呈显著的正相关关系。氮磷及有机物的不断输入加重了呼伦湖水体的富营养化程度。

英文摘要：

In order to study the impact of pollutants transporting of Kherlen River to the water quality of Hulun Lake,taking Kherlen River as the research object,the paper monitored ammonia nitrogen,total nitrogen,total phosphorus and chemical oxygen demand（ COD）,analyzed the main reason for the changes of the water quality of Kherlen River and the correlation between the indexes,and used the water pollution index method to determine the main pollution factors in the water. The results showed that the water quality of all monitoring sections in Kherlen River were inferior grade class V and the main pollutants were total nitrogen and COD. Ammonia nitrogen and total nitrogen in water were extremely significant positive correlation,and the correlation coefficient was 0. 850. Also there was significant positive correlation between COD and total phosphorus,and the correlation coefficient was 0. 691. The constant input of nitrogen,phosphorus and organic compounds increased the eutrophication degree of water body in Hulun Lake.