双龙湖初级生产力测定及其模型研究

Research on the Primary Productive Force and Model of the Shuanglong Lake

双龙湖是浅水型城市湖泊,一度为重富营养化湖泊。经综合治理其水质得到明显改善。通过黑白瓶法测定双龙湖浮游植物水柱日净产量时空分布,认为双龙湖营养水平较高,且初级生产力同水温、透明度、溶解氧、溶解性总磷呈显著正相关。根据模型计算双龙湖全年浮游植物净产量为1815033 kg,理论产鱼潜力9075.2 kg。与实际情况符合较好。定期收获鱼产品可以从湖泊生态系统中移出氮、磷等营养元素,从而减轻双龙湖富营养化。

The Shuanglong-lake is a shallow lake in the urban area,once it had been a serious typical eutrophic lake.After comprehensive harnessing,the water quality of the lake has been improved greatly.By testing the distribution of its primary productive forces,it is found that the lake is at a rich nutrition level.The primary productive force is influenced by temperature,transparency,dissolved oxygen and dissolved total phosphorus,it has the highest value in August and the minimum value appears in January.Accordin...