水磨河氮含量分布及时空变化初探

Study on Nitrogen Content Distributing and Spatio-temporal Change of Shuimo River

根据2005年水质监测结果,对水磨河无机氮的特征分布及相互之间的相关性进行了初步分析探讨,结果显示,水磨河无机氮中硝酸盐氮含量最高,亚硝酸盐氮含量最低,亚硝酸盐氮与氨氮之间有非常显著的线性关系。通过对1991—2005年的监测资料分析,表明水磨河各断面无机氮含量呈下降趋势,但水磨河自上而下无机营养盐N总体浓度升高,说明氮污染还在延续,形势不容乐观。

Based on water quality monitoring datum in 2005 year, the paper analyzed characteristic distributing and their relativity of Shuimo River inorganic nitrogen. The results shown nitrite nitrogen content was maximal, nitrous nitrogen content was lowest, and ni- trous nitrogen and ammonia nitrogen had distinct linearity relation. Analyzed monitoring datum from 1991 year to 2005 year, which shown inorganic nitrogen content of Shuimo River all segments were degressive direction. But inorganic nitrogen nutrients concentration were increased from top area to sub area of Shuimo River, that shown nitrogen pollution continued and this status was in a poor way.