潮白河燕郊段水体氮含量分布特征研究

Research on the Distribution Characteristics of Nitrogen in Yanjiao Section of the Chaobai River

水体富营养化是常见的水环境质量问题,而氮素浓度过高是引起水体富营养化的主要原因之一。通过现场调查与实验测试方法研究了潮白河燕郊段水体中氮含量的分布特征,对潮白河燕郊段水体环境质量进行单因子指数评价和内梅罗指数评价,以此作为潮白河生态环境研究基础数据。研究表明局部水体中总氮的含量略高且主要为有机氮;监测段内总氮和氨氮浓度整体呈上升趋势,总氮含量西岸高于东岸;大运河汇入水体对潮白河水体氮素含量存在一定影响。

The water eutrophication is a common environmental problem,and excessive nitrogen concentration is one of the main reasons.In this study,the distribution characteristics of nitrogen contents were investigated by field survey and experimental test in Yanjiao section of the Chaobai River.The single factor index evaluation and Nemerow index evaluation were used to analyze water quality.The results show that the total nitrogen concentrations were slightly higher which mainly caused by organic nitrogen,in several location.The total nitrogen and ammonia nitrogen concentrations were increased with the river flow direction,and total nitrogen concentrations were higher in the west than the east.The Grand Canal influenced the nitrogen concentrations of the Chaobai River.