引滦调水期河道水中氮素形态特征分析

Analysis of shape characteristics of nitrogen in river of Luanhe river diversion project during diversion period

针对引滦水质近年来氮、磷等营养元素升高问题,基于2013-2014年引滦沿线水质监测数据,采用相应的测定方法分别从氮的结构特征和溶解特征两方面分析引滦调水期输水河道黎河、果河及非输水河道沙河中氮素形态特征及空间分布特点。结果表明:河道中水体氮素主要赋存形态为可溶态,其中硝酸盐氮含量最高;相较于非输水河道,输水河道有机氮含量高;空间上调水期输水河道对氮素消解能力及各形态氮之间的转化作用均显著弱于非输水河道。

Aiming at the problem of high nitrogen phosphorus and other nutrients in river of Luanhe river diversion projectin in recent years,based on river water quality monitoring data from 2013 to 2014 duringdiversion period,the paper analyzed the shape characteristics and space distribution feature of nitrogen in river way of Lihe,Guohe and non-diversion river Shahe from the structure and dissolved features. The results show that the main state of nitrogen occurs in the form of dissolved nitrogen,in which the nitrate nitrogen content is the highest; compared to non-diversion river,the water river has high organic nitrogen content. Nitrogen digestion and transformation of the diversion river are significantly weaker than that of non-diversion river in space.