洪湖水体氮、磷营养元素变化规律及富营养化进程研究

Study on the Change of Nitrogen and Phosphorus and the Eutrophication Process in Honghu Lake

洪湖是湖北省最大的湖泊,也是长江中下游大型湖泊之一,为我国重要的淡水水产基地,在繁荣地方经济的同时,洪湖的生态环境也遭到了一定的破坏。文章通过对洪湖水体氮磷含量的采样和实验室分析,总结出从2001年到2003年洪湖氮、磷营养元素含量年际变化的规律,得出洪湖水体总氮的含量呈下降趋势,而总磷的含量逐年增加,磷作为富营养化的限制性因素的作用逐渐减弱,说明洪湖富营养化的进程在加剧,针对这一结果探讨了造成这种状况的原因,并提出了防治对策。

Honghu lake is the biggest lake of Hubei Province,and plays an important role in local economic development. With theeconomic exploitation,the lake is polluted more and more severely. From 2001 to 2003,however,while the content of phosphorus in thelake was increasing,the content of nitrogen was decreasing. As an important factor for lake eutrophication,phosphorus can affect the eu-trophication level,and the increasing input of phosphorus will expedite the eutrophication process in Honghu Lake.