吉林省典型湖库中无机氮含量变化规律初探

通过对吉林省典型湖库1992－1997年的连续水质水文监测，探讨了吉林省主要湖库中无机氮含量的季节变化、年际变化规律及其成因，吉林省大多数湖库中的总氮处于中等富营养化程度，城市湖库（南湖）已超过富营养水平下降，受到外源性补给、温度和湖库使用功能的影响，湖库中各类型无机氮含量季节变化不一，总氮在全年出现波状起伏变化，大多数湖库中的无机氮和总氮出现逐年增加的趋势，湖库中无机氮含量受到水体中各种水质因素的综合作用。与其它单个水质之间的关系不明显。

A primary study on the evolution disciplinarian of inorganic nitrogen content in typical lakes and reservoirs of Jilin Province

The Disciplinarian of inorganic nitrogen content in typical reservoirs and lakes yearly and monthly evolution is derived based on the continuously environmental and hydrological monitor between 1992 and 1997 in Jilin Province, the cause of formation and the relations between the inorganic nitrogen content and other indexes also discussed. Most of the lakes and Reservoir are at the phase of medium eutrophication and the lakes in city are at the higher. eutrophication. Because of the extra origin supply, temperature and the function of lakes, the seasonal evolutions of inorganic nitrogen are different and the total nitrogen changes undualtely in a year. The inorganic nitrogen and total nitrogen increase year by year. Being affected by all kinds of factors of water quality, the relations between the content of inorganic nitrogen and other water quality indexes are little.